RoadInventoryReport_Wright_Brothers_National_Memorial_Cycle4.pdf

The Road Inventory of

Wright Brothers National Memorial

WRBR – 5187

Cycle 4

Prepared By:

Federal Highway Administration Road Inventory Program Cycle 4

Wright Brothers National Memorial in

North Carolina

Wright Brothers National Memorial

Atlanta

Columbia

Charlotte

Raleigh

Charleston Richmond

Norfolk Virginia Beach

TABLE OF CONTENTS

SECTION PAGE

1. INTRODUCTION 1 - 1

2. PARK SUMMARY INFORMATION

Paved Route Miles and Percentages by Functional Class and PCR 2 – 1 ARAN Road Condition Summary 2 – 2 Parkwide Condition Summary 2 – 3 Cycle 2 vs Cycle 3 vs Cycle 4 Condition Comparisons 2 – 4

3. PARK ROUTE LOCATION / CONDITION MAPS

Route Location Key Map 3 – 1 Route Location Area Map 3 – 2 Route Condition Key Map – PCR Mile by Mile 3 – 3 Route Condition Area Map – PCR Mile by Mile 3 – 4

4. PARK ROUTE INVENTORY

Route Identification Report 4 – 1

5. PAVED ROUTE CONDITION RATING SHEETS (CRS)

CRS Pages 5 – 1

6. MANUALLY RATED PAVED ROUTE CONDITION

RATING SHEETS (MRR)

MRR Pages 6 – 1

7. PARKING AREA CONDITION RATING SHEETS

Paved Parking Area Pages 7 – 1

8. PARKWIDE / ROUTE MAINTENANCE FEATURES

SUMMARIES

Parkwide Maintenance Features Summary 8 – 1 Route Maintenance Features Summary 8 – 2 Structure List 8 – 3

9. PARK ROUTE MAINTENANCE FEATURES ROAD LOGS

Route Maintenance Features Road Logs 9 – 1

10. APPENDIX

A. Glossary of Terms and Abbreviations 10 – 1 B. Description of Rating System 10 – 2 C. General Information on RIP Systems 10 – 8 D. Metadata 10 – 11

Wright Brothers National Memorial

Section 1 Introduction

INTRODUCTION

Background: In 1976, the National Park Service (NPS) and the Federal Highway Administration (FHWA) entered into a Memorandum of Agreement (MOA), establishing the Road Inventory Program (RIP). In 1980, the NPS and the FHWA terminated the 1976 MOA and entered into a new MOA that provided for the completion of the initial phase of the RIP. The purpose of the RIP, per the 1980 MOA was to maintain and update RIP data in order to develop long-range costs and programs to bring National Park Service (NPS) roads up to, or to maintain, designated standards, and establish a maintenance management program.

The FHWA’s Federal Lands Highway (FLH) was assigned the task of identifying condition deficiencies and corrective priorities along with associated corrective costs, inventorying maintenance features (e.g., culverts, signs, guardrail, etc.), summarizing the data and findings in a report and providing a photographic record of the road system.

The FLH completed the initial phase of the RIP in the early 1980’s. As a result of this effort, each park received a RIP book, also known as the “Brown Book,” that included the information collected during this initial RIP phase.

In an effort to maintain and update the RIP data, a cyclical data collection and reporting process was reestablished in the 1990’s. The FLH completed two cycles of RIP data collection between 1994 and 2001. Cycle 1 was collected in 44 large parks from 1994 to 1996. This data was found to be unusable for comparison to future cycles. Cycle 2 data was collected from March 1997 to January 2001 in 79 large parks and 5 small parks containing 4,874 route miles.

Each park received a copy of a Cycle 2 RIP Report, also known as the “Blue Book”. Cycle 3 was completed from 2001 through 2004, and included data collection in all parks that contain pavement.

Since 1984, the RIP Program has been funded through the Federal Lands Highway Program’s Park Roads and Parkways (PRP) Program. Currently, the NPS Washington Headquarters’ Park Facility Management Division is responsible for coordinating the RIP program with the FLH. The FLH Washington office coordinates policy and prepares national reports and needs assessment studies for congress.

In 1998, the Transportation Equity Act for the 21st Century (TEA-21) amended Title 23 U.S.C., and inserted Section 204(a)(6) which requires the Federal Highway Administration and the National Park Service, to develop, by rule, a Pavement Management System (PMS) for the park roads and parkways serving the National Park System. As a result of the requirements in TEA-21, the NPS and FHWA are in the process of developing a PMS. The PMS will assist the decision-makers in effectively spending limited PRP Program funds. The PMS

1 - 1 will provide information for planning and programming road maintenance, rehabilitation, and reconstruction activities. RIP data will provide the basic information for this system.

Key information included in the RIP is the mileage inventory and condition assessments accomplished by the RIP Program. The mileage and condition data are used in the current allocation formula of PRP Program funds.

RIP Cycle 4: Cycle 4 data collection was initiated in spring 2006, where 86 large parks, consisting of 5,553 route miles and 6,232 paved parking areas, were selected as a representative sample of the entire NPS paved road network. Cycle 4 is scheduled for completion in spring 2009 and will serve the PMS in further development of its pavement preservation techniques.

In the Cycle 4 Reports, a general condition rating of excellent, good, fair and poor is ascribed to each one-mile section of paved roadway, and to each paved parking area. This condition rating system provides a realistic means of assessing the general funding needs for road improvements. Along with these descriptive condition ratings, a numerical rating between 0 and 100 is ascribed to each mile of road and to each parking area. This numerical rating is called a Pavement Condition Rating (PCR). The PCR rating system is described in Section 10 of this report.

All of the fieldwork required for obtaining inventory, condition, and maintenance feature information is coordinated with each park and the regional offices to ensure that the information in the RIP reports is accurate.

The FLH is responsible for all the data presented in this report. Anyone having questions or comments regarding the contents of this report is encouraged to contact the FHWA RIP Coordinator. It is our aim to provide exceptional customer satisfaction in our delivery of the RIP program.

The FHWA RIP Team

FHWA/EFLHD FHWA/CFLHD

21400 Ridgetop Circle 12300 West Dakota Ave.

Sterling, VA 20166 Lakewood, CO 80228

(703) 404-6371 (720) 963-3560

1 - 2

Section 2 Park Summary Information

WRBR: PAVED ROUTE MILES AND PERCENTAGES

BY FUNCTIONAL CLASS AND PCR

Pavement Condition Rating (PCR) Poor (<=60) Fair (61-84) Good (85-94) Excellent (95-100) TOTAL

F.C. MILES % MILES % MILES % MILES % MILES

1 0.54 29.35% 0.71 38.59% 0.12 6.52% 0.06 3.26% 1.43 2 0.02 1.09% 0.12 6.52% 0.06 3.26% 0.20 5 0.04 2.17% 0.07 3.80% 0.08 4.35% 0.02 1.09% 0.21

Totals 0.60 32.61% 0.90 48.91% 0.26 14.13% 0.08 4.35% 1.84

2-1

WRBR: ARAN ROAD CONDITION SUMMARY

ROUTE

NUMBER ROUTE NAME

FUNCT

CLASS

ROUTE

LENGTH

SURFACE

TYPE

AVERAGE

SURFACE

CONDITION

RATING (SCR)

AVERAGE

PAVEMENT

CONDITION

RATING (PCR)

0010 WB RD ENTRANCE ROAD 1 0.52 ASPHALT 79 81

0100 WB RD PROSPECT AVENUE 2 0.20 ASPHALT 76 74

0401 WB RD MAINTENANCE ACCESS ROAD 5 0.21 ASPHALT 73 73

0500 WB RD MEMORIAL PYLON LOOP ROAD 1 0.91 ASPHALT 41 59

Data Collected 03/18/2007

ARAN ROAD CONDITION SUMMARY

79 76 73

74 73

0010 0100 0401 0500

ROUTE NUMBER

SC

R

/P C

R

AVERAGE SURFACE

CONDITION RATING (SCR)

AVERAGE PAVEMENT

CONDITION RATING (PCR)

2-2

WRBR: PARKWIDE CONDITION SUMMARY

**AVERAGE

PAVEMENT

CONDITION

RATING (PCR)

*AVERAGE

ROUGHNESS

CONDITION

INDEX (RCI)

*AVERAGE

SURFACE

CONDITION

RATING (SCR)

*AVERAGE

RUT INDEX

*AVERAGE

ALLIGATOR

CRACKING

INDEX

*AVERAGE

LONGITUDINAL

CRACKING

INDEX

*AVERAGE

TRANSVERSE

CRACKING

INDEX

*AVERAGE

PATCHING

INDEX

74 85 53 62 100 96 95 100

** PCR Index is based on all ARAN-driven roads, parking areas, and manually rated routes.

* Index values are based on ARAN-driven roads only.

Data Collected 03/18/2007

PARKWIDE CONDITION SUMMARY

96 95

**AVERAGE PAVEMENT

CONDITION RATING

(PCR)

*AVERAGE

ROUGHNESS

CONDITION INDEX (RCI)

*AVERAGE SURFACE

CONDITION RATING

(SCR)

*AVERAGE RUT INDEX *AVERAGE ALLIGATOR

CRACKING INDEX

*AVERAGE

LONGITUDINAL

CRACKING INDEX

*AVERAGE

TRANSVERSE

CRACKING INDEX

*AVERAGE PATCHING

INDEX

R A

TI

N

G

2-3

: CYCLE 2 vs CYCLE 3 vs CYCLE 4 CONDITION COMPARISONS

R O

U

TE

N U

M B

ER

PA

V

ED

M

ILES

FR

O

M M

ILEPO

ST TO

M

ILEPO

ST

C Y

C

LE 2

C Y

C

LE 3

C Y

C

LE 4

PERCENT

CHANGE

C Y

C

LE 2

C Y

C

LE 3

C Y

C

LE 4

PERCENT

CHANGE

C Y

C

LE 2

C Y

C

LE 3

C Y

C

LE 4

PERCENT

CHANGE

PAVEMENT CONDTION

RATING (PCR)

SURFACE CONDITION

RATING (SCR)

ROUGHNESS CONDITION

INDEX (RCI)

COMMENT

WRBR

0010 0.52 0.00 0.52 N/A 82 81 -1% N/A 79 79 0% N/A 92 82 -11%

0100 0.20 0.00 0.20 N/A 61 74 +21% N/A 58 76 +31% N/A 77 64 -17%

0202 0.53 0.00 0.53 N/A 74 N/A N/A N/A 60 N/A N/A N/A 99 N/A N/A Route not collected in Cycle 4.

0401 0.22 0.00 0.22 N/A 78 73 -6% N/A 77 73 -5% N/A 90 89 -1%

0404 0.08 0.00 0.08 N/A 42 N/A N/A N/A 42 N/A N/A N/A N/A N/A N/A Route not collected in Cycle 4.

0500 0.91 0.00 0.91 N/A 67 59 -12% N/A 55 41 -25% N/A 87 86 -1%

PCR

0010 0100 0202 0401 0404 0500

SCR

0010 0100 0202 0401 0404 0500

RCI

0010 0100 0202 0401 0404 0500

Cycle 4 Data Collected 3/18/2007 - 3/18/2007 Page 2 - 4

CYCLE 2

CYCLE 3

CYCLE 4

CYCLE 2 CYCLE 2

CYCLE 3 CYCLE 3

CYCLE 4 CYCLE 4

Section 3 Park Route Location / Condition

Maps

3-1ºPark Owned Routes

Route Location Map

Key Map

0.25 0 0.250.125 Miles

Rte 0900

Rte 0901

Rte 0903

Rte 0905

Rte 0907AZ

Rte 0909

Rte 0907DZ

Rte 0907CZ Rte 0907BZ

Rte 0907EZ

Rte 0910

Rte 0902

Rte 0500

Rte 0100

R te

Rte

Rt e

3-2º Unique colors used to differentiate routes

Wright Brothers National Memorial Route Location Map

Area 1

3-3º

Route Condition Map PCR - Mile by Mile

Key Map

* If the PCR rating is not available for a section, the SCR rating will be displayed. See appendix for definitions and formulas.

PCR

(<=60) (61 - 84) (85 - 94) (95 - 100)

Poor Fair Good Excellent

Rte 0500

Rte 0100

Rte

3-4º

Wright Brothers National Memorial Route Condition Map PCR - Mile by Mile

Area 1

* If the PCR rating is not available for a section, the SCR rating will be displayed. See appendix for definitions and formulas.

PCR

(<=60) (61 - 84) (85 - 94) (95 - 100)

Poor Fair Good Excellent

Section 4 Park Route Inventory

Section 5 Paved Route Condition Rating Sheets

(CRS)

Rt e

º

* If the PCR rating is not available for a section, the SCR rating will be displayed. See appendix for definitions and formulas.

PCR

(<=60) (61 - 84) (85 - 94) (95 - 100)

Poor Fair Good Excellent

SOUTHEAST REGION

WRBR : WRIGHT BROTHERS NATIONAL MEMORIAL

ROUTE: 0010 WB RD ENTRANCE ROAD TOTAL LENGTH: 0.52 Miles Section Number 0 Section Length (mi) 0.52 Traffic

AADT

SADT

ADT Date

Cross Section Information Number of Lanes 3 Paved Width (ft) 38 Lane Width (ft) 12 Shoulder Width Right (ft)** 5 Shoulder Width Left (ft)** 5

Roadway Condition Information SCR (Surface Condition Rating) 79 PCR (Pavement Condition Rating) 81

Distress Index Values Alligator Cracking Index 100 Longitudinal Cracking Index 99 Tranverse Cracking Index 99 Patching Index 100 Rutting Index 81 Roughness Condition Index (RCI) 82 ** Shoulder widths are measured from video at 0.50 mile intervals along route tangents. Visibility of actual shoulders in video 5-1 images may affect accuracy of measured shoulder widths.

Traffic data may be found at www.efl.fhwa.dot.gov Click on PROGRAMS / NPS Traffic Data (Note: Not all parks have traffic data)

R O

U T

E :0

W B

R D

E N

T R

A N

C E

R O

A D

! 0 Rte 0100

º

* If the PCR rating is not available for a section, the SCR rating will be displayed. See appendix for definitions and formulas.

PCR

(<=60) (61 - 84) (85 - 94) (95 - 100)

Poor Fair Good Excellent

SOUTHEAST REGION

WRBR : WRIGHT BROTHERS NATIONAL MEMORIAL

ROUTE: 0100 WB RD PROSPECT AVENUE TOTAL LENGTH: 0.20 Miles Section Number 0 Section Length (mi) 0.20 Traffic

AADT

SADT

ADT Date

Cross Section Information Number of Lanes 2 Paved Width (ft) 26 Lane Width (ft) 13 Shoulder Width Right (ft)** 12 Shoulder Width Left (ft)** 10

Roadway Condition Information SCR (Surface Condition Rating) 76 PCR (Pavement Condition Rating) 74

Distress Index Values Alligator Cracking Index 99 Longitudinal Cracking Index 97 Tranverse Cracking Index 95 Patching Index 100 Rutting Index 85 Roughness Condition Index (RCI) 64 ** Shoulder widths are measured from video at 0.50 mile intervals along route tangents. Visibility of actual shoulders in video 5-2 images may affect accuracy of measured shoulder widths.

Traffic data may be found at www.efl.fhwa.dot.gov Click on PROGRAMS / NPS Traffic Data (Note: Not all parks have traffic data)

R O

U T

E :0

W B

R D

PR

O

SP

E

C T

A V

E N

U E

0Rte 0401

º

* If the PCR rating is not available for a section, the SCR rating will be displayed. See appendix for definitions and formulas.

PCR

(<=60) (61 - 84) (85 - 94) (95 - 100)

Poor Fair Good Excellent

SOUTHEAST REGION

WRBR : WRIGHT BROTHERS NATIONAL MEMORIAL

ROUTE: 0401 WB RD MAINTENANCE ACCESS ROAD TOTAL LENGTH: 0.21 Miles Section Number 0 Section Length (mi) 0.21 Traffic

AADT

SADT

ADT Date

Cross Section Information Number of Lanes 2 Paved Width (ft) 20 Lane Width (ft) 10 Shoulder Width Right (ft)** 12 Shoulder Width Left (ft)** 12

Roadway Condition Information SCR (Surface Condition Rating) 73 PCR (Pavement Condition Rating) 73

Distress Index Values Alligator Cracking Index 99 Longitudinal Cracking Index 97 Tranverse Cracking Index 95 Patching Index 100 Rutting Index 82 Roughness Condition Index (RCI) 89 ** Shoulder widths are measured from video at 0.50 mile intervals along route tangents. Visibility of actual shoulders in video 5-3 images may affect accuracy of measured shoulder widths.

Traffic data may be found at www.efl.fhwa.dot.gov Click on PROGRAMS / NPS Traffic Data (Note: Not all parks have traffic data)

R O

U T

E :0

W B

R D

M A

IN

T

E N

A N

C E

A C

C E

SS

R

O

Rte 0500

º

* If the PCR rating is not available for a section, the SCR rating will be displayed. See appendix for definitions and formulas.

PCR

(<=60) (61 - 84) (85 - 94) (95 - 100)

Poor Fair Good Excellent

SOUTHEAST REGION

WRBR : WRIGHT BROTHERS NATIONAL MEMORIAL

ROUTE: 0500 WB RD MEMORIAL PYLON LOOP ROAD TOTAL LENGTH: 0.91 Miles Section Number 0 Section Length (mi) 0.91 Traffic

AADT

SADT

ADT Date

Cross Section Information Number of Lanes 1 Paved Width (ft) 36 Lane Width (ft) 36 Shoulder Width Right (ft)** 12 Shoulder Width Left (ft)** 12

Roadway Condition Information SCR (Surface Condition Rating) 41 PCR (Pavement Condition Rating) 59

Distress Index Values Alligator Cracking Index 100 Longitudinal Cracking Index 94 Tranverse Cracking Index 93 Patching Index 100 Rutting Index 54 Roughness Condition Index (RCI) 86 ** Shoulder widths are measured from video at 0.50 mile intervals along route tangents. Visibility of actual shoulders in video 5-4 images may affect accuracy of measured shoulder widths.

Traffic data may be found at www.efl.fhwa.dot.gov Click on PROGRAMS / NPS Traffic Data (Note: Not all parks have traffic data)

R O

U T

E :0

W B

R D

M E

M O

R

IA

L

PY

L O

N L

O O

P R

O

Section 6 Manually Rated Paved Route

Condition Rating Sheets (MRR)

WRIGHT BROTHERS NATIONAL MEMORIAL

Route 0404

WB RD RESIDENCE ACCESS ROAD

FROM COLLINGTON ROAD

TO END AT CUL DE SAC

Route

Number Public /

NonPublic Lane Miles *

0404 PUBLIC 0.08

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

6-1

PCR

POOR/45

Surface Type

AS

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 3/18/2007

Area (sq ft) 4,435

º100 0 10050 Feet

Section 7 Parking Area Condition Rating Sheets

Route 0900

WB RD VISITOR CENTER PARKING

FROM ROUTE 0010 (WB RD ENTRANCE ROAD) AT MP 0.26 (ON RIGHT)

TO ROUTE 0010 (WB RD ENTRANCE ROAD) AT MP 0.31 (ON RIGHT)

Route Number

Public / NonPublic Lane Miles *

0900 PUBLIC 1.33

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-1

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 76,999

Surface Type

AS

PCR

GOOD/90

Rte 0905

Rte 0909

Rte 0910

R te

º290 0 290145

Route 0901

WB RD AIRSTRIP ACCESS ROAD AND PARKING

ADJACENT TO COLLINGTON ROAD ON RIGHT

Route Number

Public / NonPublic Lane Miles *

0901 PUBLIC 0.27

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-2

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 15,533

Surface Type

AS

PCR

GOOD/90

º460 0 460230 Feet

Rte 0903

Rte 0907DZ

Rte 0907CZ

Rte 0500

Route 0902

WB RD MAINTENANCE AREA PARKING

FROM ROUTE 0401 (WB RD MAINTENANCE ACCESS ROAD) AT MP 0.19 (ON LEFT)

TO OCEAN BAY ROAD

Route Number

Public / NonPublic Lane Miles *

0902 NONPUBLIC 0.31

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-3

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 17,997

Surface Type

AS

PCR

FAIR/73

º220 0 220110

Rte 0401

Route 0903

WB RD PILOTS FACILITY PARKING

FROM ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) AT MP 0.25 (ON RIGHT)

TO PARKING

Route Number

Public / NonPublic Lane Miles *

0903 PUBLIC 0.13

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-4

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 7,362

Surface Type

AS

PCR

FAIR/73

º160 0 16080 Feet

Rte 0901

Rte 0907CZ

Rte 0907DZ

Rte

Route 0905

WB RD VISITOR CENTER EMPLOYEE PARKING

ADJACENT TO ROUTE 0900 AT AT NORTHEAST CORNER

Route Number

Public / NonPublic Lane Miles *

0905 NONPUBLIC 0.11

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-5

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 6,341

Surface Type

AS

PCR

POOR/45

º160 0 16080 Feet

Rte

Rte 0900

Rte 0905

Rte 0910

Route 0907ZZ

WB RD MONUMENT PARKING AREAS

ADJACENT TO ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) AT MP 0.20 (ON LEFT)

ADJACENT TO ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) AT MP 0.78 (ON LEFT)

Summary Record Route

Number Public /

NonPublic Lane Miles *

0907ZZ PUBLIC 0.44

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-6

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 25,441

Surface Type

AS

PCR

SUMMARY/86.58

º520 0 520260 Feet

Rte 0902

Rte 0903

Rte 0901

Rte 0907EZ

Rte 0500

Rte

Rte

Rte 0907DZ

Rte 0907CZ

Rte 0907BZ

Rte 0907AZ

Route 0907AZ

WB RD MONUMENT PARKING AREA A

ADJACENT TO ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) AT MP 0.65 (ON LEFT)

Subcomponent Record Route

Number Public /

NonPublic Lane Miles *

0907AZ PUBLIC 0.09

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-7

Curb & Gutter

CONCRETE CURB

AND GUTTER

Date Visited 1/9/2007

Area (sq ft) 5,418

Surface Type

AS

PCR

GOOD/90

º540 0 540270 Feet

Rte 0907DZ

Rte 0907CZ

Rte 0907BZ

Rte 0907EZ

Rte 0902

Rte

Rte 0903

Rte 0500

Rte

Rte 0010

Route 0907BZ

WB RD MONUMENT PARKING AREA B

ADJACENT TO ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) AT MP 0.78 (ON LEFT)

Subcomponent Record Route

Number Public /

NonPublic Lane Miles *

0907BZ PUBLIC 0.09

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-8

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 5,051

Surface Type

AS

PCR

GOOD/90

º570 0 570285 Feet

Rte 0907DZ

Rte 0907CZ

Rte 0907AZ

Rte 0907EZ

Rte 0902

Rte

Rte 0903

Rte 0500

Rte

Route 0907CZ

WB RD MONUMENT PARKING AREA C

ADJACENT TO ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) AT MP 0.20 (ON LEFT)

Subcomponent Record Route

Number Public /

NonPublic Lane Miles *

0907CZ PUBLIC 0.09

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-9

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 5,059

Surface Type

AS

PCR

GOOD/90

º570 0 570285 Feet

Rte 0907DZ

Rte 0907BZ

Rte 0907AZ

Rte 0907EZ

Rte 0902

Rte

Rte 0903

Rte 0500

Rte

Route 0907DZ

WB RD MONUMENT PARKING AREA D

ADJACENT TO ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) AT MP 0.34 (ON LEFT)

Subcomponent Record Route

Number Public /

NonPublic Lane Miles *

0907DZ PUBLIC 0.09

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-10

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 5,101

Surface Type

AS

PCR

FAIR/73

º570 0 570285 Feet

Rte 0907CZ

Rte 0907BZ

Rte 0907AZ

Rte 0907EZ

Rte 0902

Rte

Rte 0903

Rte 0500

Rte

Route 0907EZ

WB RD MONUMENT PARKING AREA E

ADJACENT TO ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) AT MP 0.49 (ON LEFT)

Subcomponent Record Route

Number Public /

NonPublic Lane Miles *

0907EZ PUBLIC 0.08

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-11

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 4,812

Surface Type

AS

PCR

GOOD/90

º570 0 570285 Feet

Rte 0907CZ

Rte 0907BZ

Rte 0907AZ

Rte 0907DZ

Rte 0902

Rte

Rte 0903

Rte 0500

Rte

Route 0909

WB RD HANGER ACCESS AND PARKING

ADJACENT TO ROUTE 0010 (WB RD ENTRANCE ROAD) AT MP 0.40 (ON RIGHT)

Route Number

Public / NonPublic Lane Miles *

0909 PUBLIC 0.07

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-12

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 3,882

Surface Type

CO

PCR

GOOD/90

º80 0 8040 Feet

R te

Route 0910

WB RD ENTRANCE FEE STATION PARKING

FROM ROUTE 0010 (WB RD ENTRANCE ROAD) AT MP 0.22 (ON LEFT)

TO PARKING

Route Number

Public / NonPublic Lane Miles *

0910 NONPUBLIC 0.03

Culverts Drop Inlets Gates Fire

Hydrants Curb

0 0 0 0 NO CURB

* Lane miles are based on 11' lane widths

7-13

Curb & Gutter

NO CURB AND

GUTTER

Date Visited 1/9/2007

Area (sq ft) 1,831

Surface Type

AS

PCR

GOOD/90

º40 0 4020 Feet

Rte

Rte 0900

Section 8 Parkwide / Route Maintenance

Features Summaries

WRBR: PARKWIDE MAINTENANCE FEATURES SUMMARY

FEATURE LINEAR FEET COUNT

BARRIER 301 --

BOLLARD 301 --

BRIDGE -- 0

CABLE 0 --

CATTLE GUARD -- 0

CULVERT -- 0

CURB 628 --

DROP INLET -- 5

FIRE HYDRANT -- 1

GATE -- 2

GUARD/GUIDE RAIL 0 --

GUARD/GUIDE WALL 301 --

INTERSECTION -- 36

LOW WATER CROSSING 0 0

MILE MARKER -- 0

OVERPASS -- 0

OVERHEAD SIGN -- 0

PARK BOUNDARY -- 0

PAVED DITCH 0 --

PULLOUT -- 0

RAILROAD CROSSING -- 0

RETAINING WALL -- 0

SIGN -- 46

STATE BOUNDARY -- 0

TEMPORARY BARRIER 0 --

TRAFFIC LIGHT -- 1

TUNNEL -- 0

TURNOUT 0 --

Data Collected 3/18/2007

Notice: Culverts and drop inlets were marked by NPS and inventoried by RIP in Cycle 4, therefore the culvert and drop inlet count below includes those on ARAN-driven routes, Manually Rated Routes and in Paved Parking Areas.

8-1

WRBR: ROUTE MAINTENANCE FEATURES SUMMARY

FEATURE R

O

U T

E

W B

R D

E N

T R

A N

C E

R O

A D

R O

U T

E

W B

R D

P R

O

SP

E C

T A

V E

N U

E

R O

U T

E

W B

R D

M A

IN

T

E N

A N

C E

A C

C E

SS

R O

A D

R O

U T

E

W B

R D

M E

M O

R

IA

L P

Y L

N

L

O

P R

O A

D

UNIT

BARRIER LINEAR FEET

BOLLARD LINEAR FEET

BRIDGE EACH

CABLE LINEAR FEET

CATTLE GUARD EACH

CULVERT EACH

CURB LINEAR FEET

DROP INLET EACH

FIRE HYDRANT EACH

GATE EACH

GUARD/GUIDE RAIL LINEAR FEET

GUARD/GUIDE WALL LINEAR FEET

INTERSECTION EACH

LOW WATER CROSSING EACH

LOW WATER CROSSING LINEAR FEET

MILE MARKER EACH

OVERHEAD SIGN EACH

OVERPASS EACH

PARK BOUNDARY EACH

PAVED DITCH LINEAR FEET

PULLOUT EACH

RAILROAD CROSSING EACH

RETAINING WALL EACH

SIGN EACH

STATE BOUNDARY EACH

TEMPORARY BARRIER LINEAR FEET

TRAFFIC LIGHT EACH

TUNNEL EACH

TURNOUT LINEAR FEET

Data Collected 3/18/2007

Notice: Culverts and drop inlets were marked by NPS and inventoried by RIP in Cycle 4, therefore the culvert and drop inlet count above includes those on ARAN-driven routes, Manually Rated Routes and in Paved Parking Areas.

0 1

0 0

8-2

WRBR: STRUCTURE LIST

ROUTE

NUMBER

FUNCTIONAL

CLASS

MILEPOST

START

MILEPOST

END FEATURE

STRUCTURE

NUMBER

No data available for this section.

Data Collected 3/18/2007 8-3

Section 9 Park Route Maintenance Features

Road Logs

FROM

MILEPOST

TO

MILEPOST FEATURE SIDE COMMENT

ROUTE 0010: WB RD ENTRANCE ROAD

WRBR: ROUTE MAINTENANCE FEATURES ROAD LOG

0.000 ROUTE BEGIN N/A FROM STATE HIGHWAY 1580.000

0.000 INTERSECTION RIGHT STATE HIGHWAY 158 (CROATAN HIGHWAY)0.000

0.000 INTERSECTION LEFT STATE HIGHWAY 158 (CROATAN HIGHWAY)0.000

0.012 CURB-AND-GUTTER LEFT 0.004

0.014 CURB-AND-GUTTER RIGHT 0.004

0.008 FIRE HYDRANT RIGHT 0.008

0.013 GATE N/A 0.013

0.013 SIGN N/A GUIDE, PARK OPEN DAILY 9:00 AM TO 5:00 PM0.013

0.013 SIGN N/A REGULATORY, STOP0.013

0.013 SIGN RIGHT GUIDE, WRIGHT BROTHERS NATIONAL MEMORIAL

NATIONAL PARK SERVICE

0.013

0.061 SIGN RIGHT REGULATORY, SPEED LIMIT 150.061

0.063 SIGN RIGHT REGULATORY, ONLY0.063

0.068 SIGN RIGHT REGULATORY, NO U TURN0.068

0.179 INTERSECTION LEFT ROUTE 0010 (WB RD ENTRANCE ROAD) EXIT LANE 0.179

0.217 CURB LEFT 0.180

0.182 INTERSECTION RIGHT ROUTE 0010 (WB RD ENTRANCE ROAD) ENTRANCE LANE 0.182

0.184 SIGN LEFT REGULATORY, GRAPHIC SIGN, NO TEXT0.184

0.184 SIGN LEFT REGULATORY, NO U TURN0.184

0.218 CURB N/A 0.187

0.194 SIGN RIGHT WARNING, GRAPHIC SIGN, NO TEXT0.194

0.198 SIGN N/A GUIDE, ENTRANCE FEES0.198

0.199 SIGN LEFT GUIDE, ENTRANCE FEES0.199

0.209 SIGN RIGHT REGULATORY, STOP0.209

0.218 INTERSECTION LEFT ROUTE 0910 (WB RD ENTRANCE FEE STATION PARKING)0.218

0.220 SIGN RIGHT REGULATORY, YIELD0.220

0.224 INTERSECTION RIGHT ROUTE 0010 (WB RD ENTRANCE ROAD) ENTRANCE LANE 0.224

0.243 SIGN RIGHT GUIDE, VISITOR CENTER & PAVILION PARKING WRIGHT

MEMORIAL LOOP ROAD

0.243

0.251 SIGN LEFT GUIDE, PETS ON LEASH0.251

0.256 INTERSECTION RIGHT ROUTE 0900 (WB RD VISITOR CENTER PARKING) 0.256

0.273 INTERSECTION LEFT ROUTE 0010 (WB RD ENTRANCE ROAD) EXIT LANE 0.273

0.273 INTERSECTION RIGHT ROUTE 0900 (WB RD VISITOR CENTER PARKING) 0.273

0.274 SIGN RIGHT REGULATORY, YIELD0.274

9-1Data Collected 3/18/2007

TO

MILEPOST FEATURE SIDE COMMENT

ROUTE 0010: WB RD ENTRANCE ROAD

WRBR: ROUTE MAINTENANCE FEATURES ROAD LOG

0.276 SIGN LEFT GUIDE, EXIT LOOP ROAD0.276

0.276 SIGN LEFT REGULATORY, EXIT0.276

0.290 INTERSECTION RIGHT ROUTE 0900 (WB RD VISITOR CENTER PARKING) 0.290

0.293 SIGN LEFT GUIDE, EXIT0.293

0.303 INTERSECTION LEFT ROUTE 0010 (WB RD ENTRANCE ROAD) EXIT LANE 0.303

0.306 INTERSECTION RIGHT ROUTE 0900 (WB RD VISITOR CENTER PARKING) 0.306

0.322 SIGN RIGHT GUIDE, UNABLE TO READ FROM VIDEO0.322

0.380 SIGN RIGHT REGULATORY, SPEED LIMIT 250.380

0.397 INTERSECTION RIGHT ROUTE 0909 (WB RD HANGER ACCESS AND PARKING) 0.397

0.482 INTERSECTION LEFT ROUTE 0010 (WB RD ENTRANCE ROAD) EXIT LANE0.482

0.489 SIGN LEFT REGULATORY, ONE WAY0.489

0.491 SIGN LEFT REGULATORY, FOR YOUR SAFETY USE PATH NOT THE ROAD0.491

0.491 SIGN LEFT GUIDE, UNABLE TO READ FROM VIDEO0.491

0.498 SIGN LEFT GUIDE, PEDESTRIANS USE WALKS NOT ROADS0.498

0.520 INTERSECTION LEFT ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) 0.520

0.520 INTERSECTION RIGHT ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) 0.520

0.520 SIGN N/A GUIDE, HELP PROTECT THIS HISTORIC HILL USE WALKS0.520

0.520 ROUTE END N/A TO ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) AT

MP 0.00 (ON RIGHT)

0.520

9-2Data Collected 3/18/2007

TO

MILEPOST FEATURE SIDE COMMENT

ROUTE 0100: WB RD PROSPECT AVENUE

WRBR: ROUTE MAINTENANCE FEATURES ROAD LOG

0.000 ROUTE BEGIN N/A FROM STATE HIGHWAY 158 ACROSS FROM ROUTE 00100.000

0.000 INTERSECTION LEFT STATE HIGHWAY 158 (CROATAN HIGHWAY)0.000

0.000 INTERSECTION RIGHT STATE HIGHWAY 158 (CROATAN HIGHWAY)0.000

0.008 TRAFFIC LIGHT N/A X20.008

0.041 SIGN RIGHT REGULATORY, NO PARKING THIS SIDE OF STREET0.041

0.041 SIGN RIGHT REGULATORY, SPEED LIMIT 250.041

0.180 GUARD/GUIDE WALL RIGHT 0.157

0.179 GUARD/GUIDE WALL LEFT 0.158

0.180 SIGN RIGHT REGULATORY, NO PARKING THIS SIDE OF STREET0.180

0.180 SIGN RIGHT REGULATORY, SPEED LIMIT 250.180

0.196 CURB LEFT 0.180

0.198 CURB RIGHT 0.181

0.195 SIGN LEFT GUIDE, VA DARE TRL0.195

0.196 SIGN RIGHT GUIDE, VA DARE TRL0.196

0.196 SIGN RIGHT REGULATORY, STOP0.196

0.200 INTERSECTION RIGHT N VIRGINIA DARE ROAD 0.200

0.200 INTERSECTION LEFT N VIRGINIA DARE ROAD 0.200

0.200 ROUTE END N/A TO N VA DARE ROAD0.200

9-3Data Collected 3/18/2007

TO

MILEPOST FEATURE SIDE COMMENT

ROUTE 0401: WB RD MAINTENANCE ACCESS ROAD

WRBR: ROUTE MAINTENANCE FEATURES ROAD LOG

0.000 ROUTE BEGIN N/A FROM ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD)

AT MP 0.60 (ON RIGHT)

0.000

0.000 INTERSECTION RIGHT ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD)0.000

0.000 INTERSECTION LEFT ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD)0.000

0.008 SIGN RIGHT REGULATORY, DO NOT ENTER0.008

0.008 SIGN RIGHT REGULATORY, SERVICE VEHICLES ONLY0.008

0.043 GUARD/GUIDE WALL RIGHT 0.033

0.190 INTERSECTION LEFT ROUTE 0902 (WB RD MAINTENANCE AREA PARKING) 0.190

0.198 GATE N/A RECTANGLE WITH THREE VERTICAL BARS0.198

0.198 SIGN N/A REGULATORY, AUTHORIZED VEHICLES ONLY0.198

0.202 SIGN LEFT REGULATORY, AUTHORIZED VEHICLES ONLY0.202

0.202 SIGN RIGHT WARNING, BIKE XING0.202

0.202 SIGN RIGHT WARNING, GRAPHIC SIGN, NO TEXT0.202

0.203 SIGN RIGHT REGULATORY, AUTHORIZED VEHICLES ONLY BEYOND THIS

POINT

0.203

0.205 SIGN LEFT GUIDE, WRIGHT BROTHERS MAINTENANCE FACILITY0.205

0.207 SIGN RIGHT REGULATORY, NO MOTOR VEHICLES0.207

0.210 INTERSECTION LEFT OCEAN BAY BLVD 0.210

0.210 INTERSECTION RIGHT OCEAN BAY BLVD 0.210

0.210 ROUTE END N/A TO OCEAN BAY ROAD0.210

9-4Data Collected 3/18/2007

TO

MILEPOST FEATURE SIDE COMMENT

ROUTE 0500: WB RD MEMORIAL PYLON LOOP ROAD

WRBR: ROUTE MAINTENANCE FEATURES ROAD LOG

0.000 ROUTE BEGIN N/A FROM ROUTE 0010 (WB RD ENTRANCE ROAD) AT MP 0.52 (ON

RIGHT)

0.000

0.000 INTERSECTION N/A ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD)0.000

0.000 INTERSECTION RIGHT ROUTE 0010 (WB RD ENTRANCE ROAD)0.000

0.196 INTERSECTION LEFT ROUTE 0907CZ (WB RD MONUMENT PARKING AREA C) 0.196

0.210 DROP INLET LEFT0.210

0.239 SIGN RIGHT REGULATORY, ONE WAY0.239

0.240 SIGN RIGHT REGULATORY, UNABLE TO READ FROM VIDEO0.240

0.241 SIGN RIGHT REGULATORY, UNABLE TO READ FROM VIDEO0.241

0.246 INTERSECTION RIGHT ROUTE 0903 (WB RD PILOTS FACILITY PARKING) 0.246

0.338 DROP INLET LEFT0.338

0.342 INTERSECTION LEFT ROUTE 0907DZ (WB RD MONUMENT PARKING AREA D) 0.342

0.489 INTERSECTION LEFT ROUTE 0907EZ (WB RD MONUMENT PARKING AREA E) 0.489

0.496 DROP INLET LEFT0.496

0.599 GUARD/GUIDE WALL RIGHT 0.596

0.602 INTERSECTION RIGHT ROUTE 0401 (WB RD MAINTENANCE ACCESS ROAD) 0.602

0.650 INTERSECTION LEFT ROUTE 0907AZ (WB RD MONUMENT PARKING AREA A) 0.650

0.654 DROP INLET LEFT0.654

0.782 INTERSECTION LEFT ROUTE 0907BZ (WB RD MONUMENT PARKING AREA B) 0.782

0.787 DROP INLET LEFT0.787

0.852 SIGN RIGHT REGULATORY, EXIT0.852

0.868 INTERSECTION RIGHT ROUTE 0010 (WB RD ENTRANCE ROAD) EXIT LANE0.868

0.910 INTERSECTION N/A ROUTE 0500 (WB RD MEMORIAL PYLON LOOP ROAD) 0.910

0.910 ROUTE END N/A TO ROUTE 0010 (WB RD ENTRANCE ROAD) AT MP 0.52 (ON

LEFT)

0.910

9-5Data Collected 3/18/2007

Section 10 Appendix

APPENDIX A: GLOSSARY OF TERMS AND ABBREVIATIONS

TERM OR

ABBREVIATION DESCRIPTION OR DEFINITION

AADT

(Annual Average Daily Traffic) The estimate of typical daily traffic on a road segment for all days of the week over the period of one year.

CRS Condition Rating Sheets. (Section 5)

Excellent Excellent rating with an index value of 95 or greater

Fair Fair rating with an index value from 61 to 84

Func. Class Funtional Classification (see Route ID, Section 4)

Good Good rating with an index value from 85 to 94

IRI International Roughness Index

Lane Width Width from road centerline to fogline, or from centerline to edge-of-pavement when no fogline exists

MRR Manually Rated Route

N/A Not Applicable

NC Not Collected

Paved Width Width from edge-of-pavement to edge-of-pavement

PCR Pavement Condition Rating (Appendix B, Section 10)

Poor Poor Rating with an index value of 60 or less

RCI Roughness Condition Index

SADT (Seasonal Annual Daily Traffic) The AADT adjusted to represent just the period of the year containing 80 percent of the total annual traffic.

SCR Surface Condition Rating (Appendix B, Section 10)

Shoulder Width Distance from fogline to hinge point, or if no fogline, from edge-of-pavement to hinge point.

10-1

APPENDIX B: DESCRIPTION OF RATING SYSTEM

A numerical roadway rating system is used to describe the overall condition of the paved roadways and paved parking areas. In this system, a numerical rating between 0 and 100 is ascribed to each 0.02 miles of road. This numerical rating is called a Pavement Condition Rating (PCR). A “perfect” road, newly constructed with no surface distresses and a smooth surface, would be assigned a PCR rating of 100. Based on the type, severity, and extent of surface distresses points are deducted from 100 to arrive at the final PCR.

Data is collected on the following distresses and conditions:

- Alligator Cracking - a series of interconnecting cracks resembling alligator skin or chicken wire, which can occur anywhere in the lane.

- Longitudinal Cracking - cracks which are parallel to the pavement centerline or asphalt lay-down direction.

- Transverse Cracking - cracks perpendicular to the pavement centerline.

- Pothole (patch) - a bowl-shaped hole in the pavement surface. May be patched or not.

- Rutting - surface depressions in the wheel paths.

- Roughness is collected as International Roughness Index (IRI) and is used in the PCR formula. Roughness is measured in inches of vertical displacement of the vehicle per mile traveled.

A Distress Rating Index value is calculated for each of the individual distresses at the 0.02 mile, or every

105.6 feet.

Calculation of Index Values

Note: Index values < 0 default to 0. Index values > 100 default to 100.

For all indices, a higher value indicates a better road condition, and a lower value indicates a poorer road condition.

All severity protocols are taken from the SHRP Distress Identification Manual.

Condition Ranges for all Indices

Excellent >=95 Good >=85 and <95 Fair >60 and <85 Poor <=60

Alligator Crack Index

AC_INDEX = 100 – 40 * [(%LOW / 70) + (%MED / 30) + (%HI / 10)]

Where :

The values %LOW, %MED and %HI describe the percent of the total WX measured area that is affected by alligator cracking of each severity level. These values range from 0 to 100.

%LOW = (Total square area WX measured low severity alligator cracking) / (Section length * WX measured lane width)

10-2

%MED = (Total square area WX measured medium severity alligator cracking) / (Section length * WX measured lane width) %HI = (Total square area WX measured high severity alligator cracking) / (Section length * WX measured lane width)

The denominators 70, 30, and 10 are the maximum allowable extents for the numerator value in the same units. For example, low severity alligator cracking totaling 70% of the measured section area would alone fail that section of road for this index.

The threshold for failure for this index is AC_INDEX = 60.

Severity Levels:

Low severity alligator cracking describes an area of cracks with no or only a few connecting cracks; cracks are not spalled (cracked, broken, chipped, frayed along the cracks); pumping (water seepage from beneath the pavement through the cracks) is not evident. Any sealed alligator cracks are low severity alligator cracks, as long as the sealant is still in good condition. If the sealant has reopened, and the crack is visible and can be measured, the crack severity is assigned according to that measurement.

Medium severity alligator cracking describes an area of interconnected cracks forming a complete pattern;

cracks may be slightly spalled; pumping is not evident.

High severity alligator cracking describes an area of moderately or severely spalled interconnected cracks forming a complete pattern; pieces may move when subjected to traffic; pumping may be evident.

Longitudinal Crack Index

LC_INDEX = 100 – 40 * [(%LOW / 350) + (%MED / 200) + (%HI / 75)]

Where:

The values %LOW, %MED and %HI describe the length of longitudinal cracking of each severity as a percent of the section length. These values are 0 and can exceed 100.

%LOW = (Total linear feet WX measured low severity longitudinal cracking) / (Section length in linear feet) %MED = (Total linear feet WX measured medium severity longitudinal cracking) / (Section length in linear feet) %HI = (Total linear feet WX measured high severity longitudinal cracking) / (Section length in linear feet)

The denominators 350, 200, and 75 are the maximum allowable extents for the numerator value in the same units. For example, medium severity longitudinal cracking with a total length that is 200% of the length of the section would alone fail that section of road for this index.

The threshold for failure for this index is LC_INDEX = 60.

Low severity longitudinal cracks have a mean width ¼”, or are sealed cracks of indeterminate width whose sealant material is in good condition.

Medium severity longitudinal cracks have a mean width > ¼” and ¾”.

High severity longitudinal cracks have a mean width > ¾”.

10-3

Transverse Crack Index

TC_INDEX = 100 – {[20 * ((LOW / 15.1) + (MED / 7.5))] + [40 * (HI / 1.9)]}

The values LOW, MED and HI describe a count of the total number of transverse cracks of each severity level, where one transverse crack unit is equal to the WX measured lane width. These values are 0.

LOW = (Total linear feet WX measured low severity transverse cracking) / (WX measured lane width) MED = (Total linear feet WX measured medium severity transverse cracking) / (WX measured lane width) HI = (Total linear feet WX measured high severity transverse cracking) / (WX measured lane width)

The denominators 15.1, 7.5, and 1.9 are the maximum allowable extents for the numerator value in the same units. For example, high severity transverse cracking with a total length that amounts to 1.9 times the WX measured lane width would alone fail that section of road for this index.

The threshold for failure for this index is TC_INDEX = 60.

Low severity transverse cracks have a mean width ¼”, or are sealed cracks of indeterminate width whose sealant material is in good condition.

Medium severity transverse cracks have a mean width > ¼” and ¾”.

High severity transverse cracks have a mean width > ¾”.

Patching Index

PATCH_INDEX = 100 – 40 * (%PATCHING / 80)

The value %PATCHING describes the percent of the total WX measured area that is affected by patching.

This value ranges from 0 to 100.

%PATCHING = (Total area WX measured patching) / (Section length * WX measured lane width)

The denominator 80 is the maximum allowable extent for the numerator value in the same units. Patching totaling 80% or more of the measured section area fails a section of road for this index.

The threshold for failure for this index is PATCH_INDEX = 60.

There are no severity levels for patching.

Rutting Index

RUT_INDEX = 100 – 40 * [(%LOW / 160) + (%MED / 80) + (%HI / 40)]

10-4

10 ARAN rut depth measurements are taken per full .02 section for each of 2 wheel paths (left and right), resulting in a total of 20 measurements taken for both wheel paths. The values %LOW, %MED and %HI describe the number of ARAN rut depth measurements of both wheel paths in the section whose values are of each severity level, calculated as a percentage of the total number of ARAN rut depth measurements taken for a single wheel path in the section. These values range from 0 to 200.

%LOW = (Total number of ARAN measured low severity ruts in section for both wheel paths) / (Total number of ARAN rut measurements in section for a single wheel path) %MED = (Total number of ARAN measured medium severity ruts in section for both wheel paths) / (Total number of ARAN rut measurements in section for a single wheel path) %HI = (Total number of ARAN measured high severity ruts in section for both wheel paths) / (Total number of ARAN rut measurements in section for a single wheel path)

The denominators 160, 80, and 40 are the maximum allowable extents for the numerator value in the same units. For example, low severity ruts recorded in 16 of the 20 total readings (or 160% of a full wheel path’s worth of readings) for a full .02 section would fail that section for this index.

The threshold for failure for this index is RUT_INDEX = 60.

Ruts with an ARAN measured depth < 0.20” are not included in the distress calculations.

Low severity ruts have an ARAN measured depth 0.20” and 0.49”.

Medium severity ruts have an ARAN measured depth 0.50” and 0.99”.

High severity ruts have an ARAN measured depth 1.00”.

Roughness Condition Index

RCI = 32 * [5 * (2.718282 ^ (-0.0041 * AVG IRI))]

The value AVG IRI describes the average value of the Left IRI and Right IRI measurements for the section.

This value can range from approximately 40 to over 1000.

AVG IRI = (ARAN measured Left IRI + ARAN measured Right IRI) / 2

There is no applicable threshold for failure for this index.

NOTE: Collection of roughness data is dependent on the data collection vehicle traveling at a minimum speed of 12 mph. In the event that a route cannot be safely traveled at this minimum speed, and results in no roughness data, the SCR only will be calculated.

Surface Condition Rating Index

SCR = 100 - [(100 - AC_INDEX) + (100 - LC_INDEX) + (100 - TC_INDEX) + (100 - PATCH_INDEX)

+ (100 - RUT_INDEX)]

10-5

See above for determinations of AC_INDEX, LC_INDEX, TC_INDEX, PATCH_INDEX and

RUT_INDEX.

The threshold for failure for this index is SCR = 60.

Pavement Condition Rating Index Asphaltic Concrete Pavement (AS)

PCR = (0.60 * SCR) + (0.40 * RCI)

Where:

See above for determinations of SCR and RCI.

The values 0.60 and 0.40 function as weights within the formula.

If SCR equals zero (which means that the road surface condition is very poor), then the formula simply reduces to: PCR = 0.40 * RCI.

If RCI equals zero (which means that this value was not available for some reason), then the formula becomes: PCR = SCR.

The threshold for failure for this index is PCR = 60.

Pavement Condition Rating Index Portland Cement Concrete Pavement (CO)

Concrete PCR = -0.0012(IRI^2)+0.0499(IRI)+99.542

The threshold for failure for this index is PCR = 60.

Parking Lot and Manually Rated Road Condition Rating

Surface Condition Distresses- Chip Seal:

Raveling – loss of surface rock chips revealing previous surface Bleeding – asphalt or tar is bleeding through to the surface where surface looks slick with asphalt Rutting Potholes/Patching

Ratings - Chip Seal:

Excellent – None of the surface affected by the above (recently constructed) Good – Less than 10% of surface affected by the above Fair – Between 10% and 40% of surface affected by the above Poor – More than 40% of surface affected by the above

Surface Condition - Asphalt:

Cracking of any type Rutting Potholes/Patching

10-6

Ratings - Asphalt:

Excellent – None of the surface affected by the above (recently constructed) Good – Less than 10% of surface affected by the above Fair – Between 10% and 40% of surface affected by the above Poor – More than 40% of surface affected by the above

Index Values of Visual Ratings on Parking Lots and Manually Rated Roads

Under Construction 100

Excellent 97

Good 90

Fair 73

Poor 45

10-7

APPENDIX C: GENERAL INFORMATION ON RIP SYSTEMS

DMI (Distance Measuring Instrument) The DMI (Distance Measuring Instrument) obtains road length measurements that are highly accurate (to 0.001 miles). The DMI is connected to the outside of the rear wheel on the driver’s side, and is wired into the antilock braking system (ABS). The number of pulses recorded for each wheel rotation by the ABS is registered by the DMI, which transmits a measurement of distance traveled to the processing computers in the ARAN. The DMI distance measurements are the foundation to which all the other subsystems are tied.

Digital Image Information All images collected in Cycle 4 are digital images in .jpg format. These images provide adequate resolution for identifying sign and feature inventories and pavement evaluations. The images can be viewed with an interactive software program called VisiData. Each park will receive a copy of the VisiData program. Cycle 4 data, as well as Cycle 3 data, can be viewed using the Visi-Data software program. This program is a data presentation and analysis tool that can be accessed either at the individual park, park region or at NPS headquarters. The data is organized in a hierarchical manner and presented in tabular and graphical formats. The user is able to perform queries and drill down through the data to find the particular information they are looking for. Associated digital right-of-way images from either the LAN, USB port, individual DVD can be presented along with GPS locations.

Right-of-way (ROW) Video Three digital cameras are mounted above the vehicle’s windshield that point directly forward and slightly to the left and right. These cameras each collect one image every 0.002 miles (10.56 feet) in the primary-direction lane, to give a panoramic field-of-view of about 160 degrees. (Forward-facing video from the center camera only is collected in the opposite-direction lane of travel.)

If data collection speed exceeds 35-40 mph, the network and storage computers may become overwhelmed and may begin to drop individual video frames. Occasional common video quality issues include sun glare and rapid changes between sunlight and shadow. The camera system is equipped with auto risers that sometimes cannot adjust quickly enough to collect optimal video images.

FHWA ARAN CAMERA SPECIFICATIONS

Forward-Facing Cameras (ROW) Focal length 10 mm Chip size 8.71mm X 6.90mm Naming convention of each image chainage.jpg Image resolution 1300 X 1030 Image pixel size depends on distance Relative position of the GPS unit to each camera

2.104 meters from front-center rutbar to camera

The ARAN has a lever arm setting which tells the POS system where the center of the rutbar is with respect to the GPS antennas.

Pavement Video Pavement video images are collected by the data collection vehicle to use in later analysis to determine extents and severities of different types of pavement distress. The pavement in the primary-direction road lane is filmed continuously by two analog cameras attached to booms extended from the rear of the ARAN on the left and right sides. Strobe lights fire synchronously with the opening of the camera shutters to eliminate shadows and motion blur. The images from the two cameras overlap, and are stitched together in real time to create a continuous strip image of the pavement in the primary direction lane. This strip has a maximum width of 3.0 meters (actual width depends on pavement camera calibration) and is sectioned for ease of file management every 0.010 miles (52.8 feet).

10-8

The cameras both have a resolution of 640 x 480, making the threshold of visible pavement cracks about 3 mm.

Because the cameras are triggered by time and not distance traveled, this subsystem requires a minimum operating speed of 6 mph, otherwise images are taken on top of one another and result in checkered or black pavement video.

FHWA ARAN CAMERA SPECIFICATIONS

Pavement Cameras Image Pixel size 3.135 mm /side Image Resolution 640 X 480 Area that images cover 1.5 m X 1.2 m Full color or grayscale grayscale Vehicle speed limitations 80km/h Aperture setting Auto-iris Exposure setting 1/50000

FHWA ARAN GPS & Inertial System GPS is collected by a NovAtel MiLLenium, 12 channel, dual frequency L1/L2, DGPS ready receiver with a MiLLennium 502 GPS antenna. An OmniStar 3000 LR provides real-time differential correction. An Applanix POS/LV is the inertial system that fills in when GPS is unavailable. The antenna is mounted in the center of the roof, slightly toward the rear of the vehicle, but a lever arm is applied to place the operational location of GPS recording at the center of the rutbar on the front bumper of the vehicle. Expected accuracy under ideal conditions is sub meter.

GPS Collected on Manually Rated Routes Parking areas and roads that are not fully drivable with the ARAN data collection vehicle are collected manually by field technicians. GPS is collected for these routes using GPS field data collection utilizes Trimble ProXRS or ProXH Receivers matched with Trimble TSC1 or Ranger handheld Data Loggers, connected to Trimble Hurricane Antennas giving sub meter accuracy in ideal conditions. This collection equipment has varied as technology has improved over the years of RIP data collection. Some GPS files collected as early as 1998 have been verified for accuracy and perpetuated through the current cycle of data collection.

GPS SHAPEFILES

Type of Route and Collection Shape Filename

Roads driven by ARAN Line park_road_04.dbf/.shp/.shx Parking Areas Polygon park_pkg_04.dbf/.shp/.shx Roads Manually Rated as Lines (not in every park)

Line park_mrl_04.dbf/.shp/.shx

Roads Manually Rated as Polygons (not in every park)

Polygon park_mrp_04.dbf/.shp/.shx

• Datum for all GPS shapefiles is LL_WGS84_DD (Latitude Longitude _World Geodetic Survey 1984_Decimal Degrees)

• In filename, “park” is NPS four-letter alphabetic code.

• The source for route data required for data processing and report production is the PARK_RouteInfo.mdb.

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Condition Photos Taken of Manually Rated Roads One or more digital photos are taken by Canon Power Shot G2 4.0 Mega Pixel digital camera for each manually rated route in a National Park. They are stored in .jpg format named with the four-letter NPS park alphabetic code, route number, and the photo number assigned by the camera. For example, YOSE_0900_4434.jpg is the filename of the photo named 4434 by the camera that was taken of Yosemite National Park route 0900.

Scenic Photos Scenic photos are taken by Canon Power Shot G2 4.0 Mega Pixel digital camera throughout each park and are named with the four-letter NPS park alphabetic code and the count of the photo taken in that park. For example, GRCA003.jpg is the filename of the third scenic photo taken in Grand Canyon National Park. The number of scenic photos provided will vary between parks.

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APPENDIX D: METADATA

FHWA – NPS Road Inventory Program Cycle 4 Metadata

The purpose of these sheets is to provide users of the Road Inventory Program’s data with data accuracies and tolerances to help users define ways in which the RIP data can and cannot be used. For further information on specifics of data collection equipment, data collection procedures, equipment calibrations, or quality control/quality assurance procedures, please contact Jim Kennedy, Project Manager, Data Quality Assurance, at 720-963-3560 or jim.kennedy@fhwa.dot.gov.

All Road Inventory Program data undergoes quality control and quality assurance testing. This document represents the known data accuracies and tolerances for the data collection equipment, data collection procedures, and data processing procedures currently in use. Many additional tests conducted on the park databases during the quality assurance phase to ensure data integrity are not listed as a part of this document. Before it is delivered, a park database undergoes a large set of table design consistency, field data format consistency, data completeness, uniqueness of key fields, data reasonableness, acceptable data range, within-field data consistency, between-field data consistency, and between-table data consistency tests. Additional data sampling checks are conducted to ensure proper data upload from raw files into the park database and to quality check the pavement crack analysis. Further information is detailed in the FHWA – NPS RIP Quality Assurance Manual, available upon request.

This description of metadata includes only the known accuracies with which…