NP SER PMS FY23(1) and FY23(2)_PVT Memo.pdf

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Form FHWA-201 (Rev. 11-67)

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

Use this form in lieu of transmittal slips within Dept. of Trans. When message comment is to be retained as file material. Do not prepare carbons. Not to be used in lieu of Form FHWA-121 for informal correspondence. MINUTE-MEMO

SUBJECT: Projects NP SER PMS FY23(1) and NP SER PMS FY23(2) – Pavement Recommendations

TO MESSAGE/COMMENT FROM/DATE

R.

Kotadia Project Manager

C.

Burnell And S.

Nawaz Highway Design Managers

This memorandum serves to support the PS&E development for two projects. The projects consist of pavement preservation for several roadways and parking areas within the Gulf Islands National Seashore (GUIS) and Vicksburg National Military Park (VICK) as follows:

NP SER PMS FY23(1) - GUIS (Florida and Mississippi)

NP SER PMS FY23(2) – VICK (Mississippi)

The recommendations herein are based on findings from the field assessment performed by the Eastern Federal Lands Highway Division (EFLHD) Pavements Team and our review of the most recent Road Inventory Program (RIP) data.

BACKGROUND

The EFLHD RIP last collected the pavement condition data in GUIS and VICK as part of Cycle 6 (C6) with the Data Collection Vehicle (DCV) for roadways and manually for parking areas and some roadways. A project location map for routes collected in C6 is included in Appendix A. Based on C6 RIP data collected in 2019, the Pavement Condition Ratings (PCRs) for roadways and parking areas were determined as follows:

Gulf Islands National Seashore (GUIS) o A total 81 routes consisting of roads and parking areas were scoped.

o Pavement conditions for roadways typically ranged from fair (PCR of 62) to excellent (PCR of 100). A few roadways were determined to be in poor conditions with PCRs ranging from 21 to 60.

o PCRs for parking areas mostly ranged from fair (PCR of 73) to good (PCR of 90). Some parking areas were determined to be in poor conditions with PCRs ranging from 12 to 60.

Vicksburg National Military Park (VICK) o A total 29 routes consisting of roads and parking areas were scoped.

o PCRs for roadways typically ranged from fair (PCR of 61) to good (PCR of

94). Few roadways were determined to be in poor conditions with PCRs ranging from 6 to 30.

o PCRs for parking areas typically ranged from fair (PCR of 73) to good (PCR of 90). One parking area was rated as poor with a PCR of 53.

Appendix B includes the C6 RIP Road Condition Summary Report for the roadways and parking areas within GUIS and VICK.

The Pavements Team conducted a condition survey based on visual inspection from February 28th to March 3rd, 2022, of all roadways and parking areas within the project scope to assess the existing pavement conditions and determine the feasibility of pavement preservation treatments. Multiple roadways and parking areas were confirmed to be in fair to excellent conditions, however there were pavements in poor condition with distresses

K. Nguyen Pavement Engineer

Through:

M. Elias Pavement Team Leader

3/31/2023

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Use this form in lieu of transmittal slips within Dept. of Trans. When message higher in severity and frequency. Below is a summary describing the typical pavement conditions for each park within the project along with respective photographs.

GUIS

A total 81 routes were scoped by the Pavements Team in GUIS. 44 out of the 81 routes were confirmed to be in fair to excellent conditions exhibiting edge cracking (Figure 1), transverse cracking (Figure 2), and block cracking (Figure 3). Localized rooting was observed in few locations (Figure 4). 4 routes were recently overlaid in late 2021 and were thus removed as preservation candidates. Okaloosa West Access Road (GUIS-0211) was observed to be paved with seashells and Public Beach Parking #21 (GUIS-0921) had a small area with cellular confinement system (CCS).

Figure 1. Edge Cracking – GUIS 0102

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Figure 2. Transverse Cracking – GUIS 0103

Figure 3. Block Cracking - GUIS 0932

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Figure 4. Rooting – GUIS 0206AZ

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VICK

14 out of the 29 areas and roads within VICK were observed to be in fair to good condition.

Block cracking (Figure 6), localized fatigue cracking (Figure 7), raveling (Figure 8), transverse cracking (Figure 9), and longitudinal cracking (Figure 10) were observed during the field view. Some of the routes (VICK-0014 and VICK-0924) were either fully or partially concrete and are beyond preservation. During the field view, it was observed that all the 29 scoped routes within VICK included brown aggregate in the surface course.

Figure 6. Block Cracking – VICK-0017

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Figure 7. Fatigue Cracking – VICK-0019

Figure 8. Raveling – VICK-0400

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Figure 9. Transverse Cracking – VICK-0911

Figure 10. Longitudinal Cracking – VICK-0910

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PAVEMENT RECOMMENDATIONS

The Pavements Team evaluated all routes within VICK and GUIS based on the visual assessment of the existing pavement conditions and C6 RIP for validation, to determine routes that are candidates for preservations.

We have found that several assessed routes will benefit from pavement preservation treatments. However, approximately 52% of the total number of roadways and parking areas within the two parks are exhibiting conditions that might not benefit from preservation.

These routes have either received a pavement treatment recently or exhibit moderate to high severity distresses that deem them beyond preservation and warrant rehabilitation treatments. Roads and parking areas meeting any of those above conditions are excluded from the scope of work. Spot reconstruction (i.e. patching) and crack sealing/filling are recommended prior to placing the preservation treatment for preservable routes.

Based on the existing pavement conditions of roads and parking areas, micro-surfacing, and a Thin-lift asphalt concrete (AC) overlay (¾ inch) are feasible preservation treatments for routes within the scope of work. However, the application of micro-surfacing uses large machinery which pose constructability issues for small parking areas and pull-offs as this would lead to the micro-surfacing treatment being applied via handwork, resulting in possible poor aesthetics and workmanship issues. Therefore, a Thin-lift AC overlay is recommended for small parking areas or short roads with tight turns where micro-surfacing might not be feasible.

The following pavement preservation strategies are recommended as per the FP-14 Specifications, “Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects”:

Micro-surfacing Type 2 – Micro-surfacing is the recommended option for roads and large parking lots.

Thin-lift AC Overlay (¾ inch) – a Thin-lift AC overlay (4.75 mm NMSA) for small parking lots and short roads with tight curves is recommended. For roads and parking areas where a curb exists, taper milling will be needed to maintain the existing curb reveal. Tack coat must be applied to the surface prior to placement of the overlay. Crack sealing and filling, if required, should be applied as described below. However, it’s our understanding that the NPS prefers for all parking areas to be treated with thin-lift AC overlay. Therefore, all parking areas are designated for treatment as such.

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The existing pavements may require the following repairs prior to placing the proposed preservation treatments:

Perform a Full Depth Patch (FDP Type 1 or Type 2) as necessary, in areas exhibiting fatigue cracking, settlement, and/or potholes. Such areas should be identified by the CO. Patch areas should be performed in accordance with Section 418.

Perform Crack Sealing and Filling at least a week prior to placing the Thin-lift overlay preservation treatment. Crack sealing (crack width ¼-inch to less than -inch) and filling (crack width greater than 1-inch) should be performed in accordance with Section 414. It is recommended to have as much time as possible, typically 6 to 12 months or one season per industry practice, between the crack sealing operation and a hot surface treatment application. That time will allow for the crack sealant to set into the cracks and cure under vehicular traffic. This will also prevent too much sealant under the surface treatment resulting in better performance. If crack sealing occurs prior to 6 months from the preservation treatment application, it is recommended to use a recessed configuration by applying the sealant so that it sets below the surface. This reduces the risk of the sealant melting and potentially bubbling back through the subsequent hot surface treatment applications.

Table 1 provides the approximate quantities for patching and crack sealing/filling for the parks specified.

Table 1 – Patching and Sealing Quantities

Park

ID

Full Depth Patch Type 1 (Square

Yards)

Full Depth Patch Type 2 (Square Yards)

Crack Sealing and Filling for Roads (Miles)

Crack Sealing and Filing for Parking Areas (Lane Miles)

GUIS 29 514 0.37 2.24

VICK 20 85 0.46 1.05

Removal of pavement markings and wheel stops will be necessary prior to placement of the surface treatment on some routes/parking areas.

A list of routes with the respective proposed preservation treatment and estimated patching and crack cleaning/sealing quantities is included in Appendix C and D for GUIS and VICK, respectively.

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APPENDICES

Appendix A: Project Location Map Appendix B: C6 RIP Road Condition Summary Report Appendix C: Preservation Treatments Summary – GUIS Appendix D: Preservation Treatments Summary – VICK cc: Highway Design BC, TS BC w/ attachments

APPENDIX A

Project Location Map

APPENDIX B

C6 RIP Condition Report

APPENDIX C

Preservation Treatments Summary - GUIS

NP SER PMS FY23(1)

APPENDIX C Preservation Treatment Summary - GUIS

Route ID Route Name Proposed PVT Treatment Crack cleaning and sealing (Feet)

FDP Type 1

(SQYD)

FDP Type 2 (SQYD)

GUIS-0011 J. EARLE BOWDEN WAY / STATE HIGHWAY 399 Micro-surfacing - - -

GUIS-0013 JOHNSON BEACH ROAD Micro-surfacing 1400 - 500

GUIS-0102 EAGLE POINT ROAD Micro-surfacing - - 4

GUIS-0207

HEADQUARTERS AND VISITOR CENTER ACCESS

ROAD

Micro-surfacing 250 - -

GUIS-0212 OPAL BEACH ROAD Micro-surfacing - - -

GUIS-0405 VFW ROAD Micro-surfacing 280 - - GUIS-0409 CEDAR POINT CAMPUS ROAD Micro-surfacing - - - GUIS-0902 DAVIS BAYOU BOAT LAUNCH PARKING Thin-Lift 100 - 6

GUIS-0907AZ FORT PICKENS DISTRICT PARKING A Thin-Lift 70 - -

GUIS-0907CZ FORT PICKENS DISTRICT PARKING C Thin-Lift 30 - -

GUIS-0907DZ FORT PICKENS DISTRICT PARKING D Thin-Lift 120 - -

GUIS-0909 BATTERY TRUEMAN PARKING Thin-Lift 100 - -

GUIS-0910 JETTIES RESTROOM PARKING Thin-Lift 20 - -

GUIS-0911 BATTERY PAYNE PARKING Thin-Lift 40 - -

GUIS-0912 GRAVES PARKING Thin-Lift 100 - -

GUIS-0913 BATTERY 234 PARKING Thin-Lift 150 - -

GUIS-0914 BATTERY COOPER PARKING Thin-Lift 100 - -

GUIS-0918AZ LANGDON BEACH PARKING A Thin-Lift 500 - -

GUIS-0918BZ LANGDON BEACH PARKING B Thin-Lift 500 - -

GUIS-0920 PUBLIC BEACH PARKING #22 Thin-Lift - 5 -

GUIS-0921 PUBLIC BEACH PARKING #21 Thin-Lift - 15 -

NP SER PMS FY23(1)

APPENDIX C Preservation Treatment Summary - GUIS

Route ID Route Name Proposed PVT Treatment Crack cleaning and sealing (Feet) FDP Type 1

(SQYD)

FDP Type 2 (SQYD)

GUIS-0925AZ HEADQUARTERS & VISITORS CENTER PARKING A Thin-Lift 350 - - GUIS-0925CZ HEADQUARTERS & VISITORS CENTER PARKING C Thin-Lift 10 - - GUIS-0925DZ HEADQUARTERS & VISITORS CENTER PARKING D Thin-Lift 15 - - GUIS-0925EZ HEADQUARTERS & VISITORS CENTER PARKING E Thin-Lift 10 - - GUIS-0925FZ HEADQUARTERS & VISITORS CENTER PARKING F Thin-Lift 10 - - GUIS-0925GZ HEADQUARTERS & VISITORS CENTER PARKING G Thin-Lift 15 - - GUIS-0925HZ HEADQUARTERS & VISITORS CENTER PARKING H Thin-Lift 10 - - GUIS-0925IZ HEADQUARTERS & VISITORS CENTER PARKING I Thin-Lift 20 - - GUIS-0925JZ HEADQUARTERS & VISITORS CENTER PARKING J Thin-Lift 10 - - GUIS-0925KZ HEADQUARTERS & VISITORS CENTER PARKING K Thin-Lift 15 - - GUIS-0925LZ HEADQUARTERS & VISITORS CENTER PARKING L Thin-Lift 10 - - GUIS-0925MZ HEADQUARTERS & VISITORS CENTER PARKING M Thin-Lift 30 - -

GUIS-0926 PUBLIC PARKING #8 Thin-Lift - - - GUIS-0927 PUBLIC PARKING #7 Thin-Lift - - - GUIS-0928 OPAL BEACH PARKING #5 Thin-Lift - - - GUIS-0929 PUBLIC PARKING #6 Thin-Lift - 3 - GUIS-0930 OPAL BEACH PARKING #2 EAST Thin-Lift - - - GUIS-0931 PUBLIC PARKING #1 Thin-Lift - - - GUIS-0934 OPAL BEACH COMPLEX PARKING Thin-Lift - - - GUIS-0954 OPAL BEACH PARKING #4 WEST Thin-Lift - - - GUIS-0955 OPAL BEACH PARKING #3 EAST Thin-Lift - - -

Totals for GUIS = FDP – Type 1

(SQYD)

FDP - Type 2

(SQYD)

Crack Cleaning and Sealing for Roads

(Miles)

Crack Cleaning and Sealing for Parking Areas (Lane Miles)

23 510 0.37 2.24

APPENDIX D

Preservation Treatments Summary -VICK

NP SER PMS FY23(2)

APPENDIX D Preservation Treatment Summary - VICK

Totals for VICK = FDP - Type 1

(SQYD)

FDP - Type 2

(SQYD)

Crack Cleaning and

Sealing for Roads (Miles)

Crack Cleaning and Sealing for Parking Areas (Lane Miles)

20 85 0.46 1.05

Route ID Route Name Proposed PVT

Treatment

Crack cleaning and sealing (Feet)

FDP - Type 1

(SQYD)

FDP - Type 2 (SQYD)

VICK-0010 CONNECTING AVENUE Micro-surfacing - 20 -

VICK-0023 TENNESSEE CIRCLE Micro-surfacing 40 - 10

VICK-0200 SOUTH CEMETERY ROAD (TINDLE ROAD) Micro-surfacing 380 - 15

VICK-0404 CEMETERY MAINTENANCE ROAD Micro-surfacing 80 - 25

VICK-0911 FORT HILL PARKING

Thin-Lift 50 - -

VICK-0016 OLD GRAVEYARD ROAD Micro-surfacing 200 - 10

VICK-0018 SHERMAN'S CIRCLE Micro-surfacing 150 - 10

VICK-0925 SHIRLEY HOUSE PARKING Thin-Lift 45 - -

VICK-0019 SOUTH LOOP

Micro-surfacing 1500 - 15

VICK-0402 MAINTENANCE ACCESS ROAD Micro-surfacing 85 - -

VICK-0915 JEFFERSON DAVIS/PICNIC PARKING A Thin-Lift 75 - -

VICK-0916 TEXAS PARKING Thin-Lift 50 - -

VICK-0919 VISITOR CENTER PARKING Thin-Lift 350 - -