RBI-HUA-09-13599.pdf

RBI-HUA-09-13599

Routine Bridge Inspection Report Facility Number: 13599 Ft. Huachuca, Arizona

Laura R. Hyde

February 2009

Geotechnical and Structures Laboratory

Distribution authorized to U.S. Government Agencies only. Other requests for this document shall be referred to the U.S. Army Corps of Engineers, Engineer Research and Development Center (CEERD-GS-S), 3909 Halls Ferry Road, Vicksburg, MS 39180.

DISCLAIMER: The contents of this report are not to be used for advertising, publication, or promotional purposes.

Citation of trade names does not constitute an official endorsement or approval of the use of such commercial products.

All product names and trademarks cited are the property of their respective owners. The findings of this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents.

Preface

This report presents a routine bridge inspection for facility number 13599 at Ft.

Huachuca, AZ. This report satisfies requirements for routine inspection as specified in Army Regulation (AR) 420-1 “Army Facility Management”, Chapter 7 “Transportation Infrastructure and Dams”.

The Army Bridge Inspection Program is sponsored by the Army Transportation Infrastructure Program (ATIP) of the Headquarters Installation Management Command (IMCOM), Arlington, VA. The IMCOM provided funding for this investigation.

Questions shall be directed to Ali A. Achmar, IMCOM ATIP Program Manager (210- 295-0993, ali.achmar@us.army.mil).

Personnel of the U.S. Army Engineer Research and Development Center (ERDC), Geotechnical and Structures Laboratory (GSL), Vicksburg, MS, prepared this publication. The findings and recommendations presented in this report are based upon routine inspection at Ft. Huachuca, Sierra Vista, AZ. The required field inspection was conducted in February 2009. The evaluation team consisted of Gerardo I. Velazquez, Team Leader, Laura R. Hyde, and Angela K. White, Structural Engineering Branch (StEB), GSL. Mr. Gerardo I. Velázquez was the Project Lead under the supervision of Mr. Terry R. Stanton, Chief, StEB; Bartley P. Durst, Chief, Geosciences and Structures Division; Dr. William P. Grogan, Deputy Director, GSL; and Dr. David W. Pittman, Director, GSL.

COL Gary E. Johnston was the Commander and Executive Director of ERDC, and Dr.

James R. Houston was the Director.

TABLE OF CONTENTS

BRIDGE LOCATION & ID ...............................................................................................13599-1

BRIDGE DESCRIPTION ..................................................................................................13599-3

SKETCHES .........................................................................................................................13599-6

SUMMARY OF FINDINGS ..............................................................................................13599-7

INSPECTION PROCEDURES AND METRICS ..........................................................13599-10

BRIDGE INSPECTION RECORD .................................................................................13599-15

NBI FORM ........................................................................................................................13599-27

DEFICIENCIES AND RECOMMENDATIONS...........................................................13599-28

13599-1

BRIDGE LOCATION & ID

BRIDGE LOCATION MAP

NOT TO SCALE

13599-2

TYPE: Vehicular, 1 span T-Beam

INSTALLATION: Ft. Huachuca, Sierra Vista, AZ

STRUCTURE NO.: DAPTRAHUA013599

ABIS NO.: DAPTRAHUA013599

FACILITY NO.: 13599

LOCATION: Dead Man’s Curve

ROUTE: Canelo Rd

ACROSS: Slaughterhouse Wash

COORDINATES: N 31º34’ 01.88”, W 110º23’ 44.92”

INSTALLATION POC: Daniel G. Nucci PHONE: (520)533-3471

13599-3

BRIDGE DESCRIPTION

Figure 1. Elevation view

Figure 2. Roadway Approach

13599-4

Figure 3. Underside View

Figure 4. Upstream View

13599-5

Figure 5. Downstream View

TYPE OF USE: Vehicle

DESCRIPTION: One-span reinforced concrete

DATE CONSTRUCTED: 1960 (est.)

TYPE OF CONSTRUCTION: Reinforced concrete

SUPERSTRUCTURE: 4-precast T-beams, cast-in-place deck

SUBSTRUCTURE: cast-in-place reinforced-concrete abutments

NUMBER OF SPANS: 1

SKEW: 00

LENGTH OF LONGEST SPAN: 27’-10”

NUMBER OF TRAFFIC LANES: 2

ROADWAY WIDTH: 23’-0”

CLEARANCE BETWEEN BRIDGE RAILS/BARRIERS: 24’-0”

DECK WIDTH OUT TO OUT: 27’-3”

SIDEWALK WIDTH: N/A

13599-6

SKETCHES

27’-10”

TYPICAL SECTION

ELEVATION

13599-7

SUMMARY OF FINDINGS

Installation Status Report: The recommended ISR rating for Facility Number 13599 is AMBER.

Table 1

ISR Green ISR Amber ISR Red

FHWA condition rate in good or better at 7, 8, 9, or N, for the:

− Bridge deck − Superstructure − Substructure − Culverts

- FHWA requirements rate bridge in fair condition at an inspection rating of 5, or 6

- If ISR BRIDGE CONDITION is RED but there is a plan of action available during the inspection to address deficiencies

- FHWA requirements rate bridge in poor condition at an inspection rating of 0, 1, 2, 3, or 4

- Bridge capacity is sufficient for current mobilization requirements

- Bridge can be strengthened to meet current and mobilization requirements with minimal rehabilitation

- Bridge capacity is insufficient or unable to be rehabilitated to meet current mobilization requirements

Condition: Overall, Facility No. 13599 is in fair condition (NBI Rating = 5), but has shear cracks.

Table 2

ISR NBI Item 58:

Deck

NBI Item 59:

Superstructure

NBI Item 60:

Substructure

NBI Item 62:

Culvert

Overall Length (ft) ADT

Amber 6 5 7 N 27’-10” 1000

Structure Capacity:

Table 3

NBI Item 42:

Type of Service

NBI Item 31:

Design Load

NBI Item 64:

Operating Rating (tones)

NBI Item 66:

Inventory Rating (tones)

NBI Item 63 & 65:

Rating Method

NBI Item 41:

Status

NBI Item 70:

Posting

Load Rating

Document Date

15 5 36.3 32.4 5A A 5 None N/A

13599-8

Table 4

Posted

MLC

1-way Wheel

Calc

MLC

1-way Wheel

Posted

MLC

2-way Wheel

Calc

MLC

2-way Wheel

Posted

MLC

1-way Track

Calc

MLC

1-way Track

Posted

MLC

2-way Track

Calc

MLC

2-way Track

Civilian Posted Loads

LR State Legal Loads

N N N N N N N N N N

Channel Scour:

Table 5

NBI

Item 61:

Channel

NBI

Item 113:

Scour Critical Bridges

Scour Screening

(Level 1/2)

Low Risk (Y/N)

Priority (Low/High) Document

Document Date

(MM/YY)

Channel Profile

Change (N/1/2/3)

Profile Base Year

7 8L 1 Y Low None N/A N 2009

Traffic Safety: The traffic safety features of structure do not appear to meet current standards. Post spacing is too wide to provide adequate strength.

Table 6

NBI Item 36A Bridge Rails

NBI Item 36B Transition

NBI Item 36C Approach Rails

NBI Item 36D End Treatments

0 N N 1

Prior Report: No previous Bridge Inspection Report was on file.

Table 7

Critical Findings from Previous Report (NBI item < 4 or load restriction)

Repairs Completed since Previous Report

Defect Progression since Previous Inspection New Defects

None None N/A None

13599-9

Table 8

NBI Item 90:

Inspection Date

(MM/YY)

NBI Item 91:

Structure Insp. Freq.

(months)

NBI Item 92A:

Fracture Critical Detail

(Y/N)

NBI Item 92A:

FC Insp. Freq.

(months)

NBI Item

93A: FC

Inspection Date

(MMYY)

NBI Item 92B:

Underwater Inspection

(Y/N)

NBI Item 92B:

Underwater Insp. Freq.

(months)

NBI Item 93B:

Underwater Inspection

Date

(MMYY)

0209 24 N N/A N/A N N/A N/A

Table 9

Critical Findings

(Y/N)

Critical Findings Description

CF Inspection Frequency (months)

Recommended Action Team Leader

N N/A N/A 0 Gerardo I.

Velazquez

13599-10

INSPECTION PROCEDURES AND METRICS

The ERDC Bridge Inspection Team performed a hand-on visual routine inspection of this bridge. Waders were required to access the underside of the bridge. Concrete portions of the structure were visually examined and sounded with a hammer. Major defects were noted and photographs were taken (a National Bridge Inventory-NBI rating of 6 or less). For the concrete portions of the structure, the location of minor cracking, spalling, minor corrosion of reinforcing steel, or other defects were noted; however, no attempt was made to catalog every minor crack or defect.

For General Bridge Conditions, the following descriptions are used throughout the report to rate the condition of individual or groups of bridge elements.

Rating Description

Very Good No problems noted.

Good Some minor problems.

Satisfactory Structural elements show some minor deterioration.

Fair Primary structural elements are sound, but may have minor deterioration, section loss, cracking or spalling.

Poor Advanced deterioration, section loss, cracking or spalling.

Serious Deteriorated condition has seriously affected primary structural components.

The description of the defects in the concrete members of the bridge structure, as used in this report, are based on definitions, as listed in the American Concrete Institute (ACI), "Guide for

Making a Condition Survey of Concrete in Service" (1984), and the FHWA "Bridge Inspector's

Reference Manual" (revised December 2006). The extent of the defects is defined as follows:

Defect Description

Small Spall Less than one-inch deep or approximately 6" in diameter

Large Spall Greater than one-inch deep or 6" in diameter

Light Scale Loss of surface mortar up to 1/4" deep, with surface exposure of coarse aggregate

Medium Scale Loss of surface mortar from 1/4" to 1/2" deep, with mortar loss between the coarse aggregate

Heavy Scale Loss of surface mortar from 1/2" to one-inch deep; coarse aggregates are exposed

Severe Scale Loss of coarse aggregate particles, as well as surface mortar and the mortar surrounding the aggregates; depth of the loss exceeds one-inch; reinforcing steel is usually exposed

13599-11

Defect Description

Fine or Hairline Crack Less than 0.04" wide

Medium Crack 0.04" to 0.08" wide

Wide Crack Greater than 0.08" wide

The following descriptions were used to define the degree of section loss in the steel members.

The degree of section loss was estimated from visual inspection.

Section Loss Description

Minor No section loss

Moderate Section loss but not measurable

Severe Section loss measurable

The following descriptors were used to define the NBI general condition of the bridge and the main structural elements.

Code Description

N NOT APPLICABLE

9 EXCELLENT CONDITION

8 VERY GOOD CONDITION: No problems noted.

7 GOOD CONDITION: Some minor problems.

6 SATISFACTORY CONDITION: Structural elements show some minor deterioration.

5 FAIR CONDITION: All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

4 POOR CONDITION: Advanced section loss, deterioration, spalling or scour.

SERIOUS CONDITION: Loss of section, deterioration, spalling or scour has seriously affected primary structural components. Local failures are possible. Fatigue cracks in steel or shear cracks in concrete may be present.

CRITICAL CONDITION: Advanced deterioration of primary structural elements. Fatigue cracks in steel or shear cracks in concrete may be present or scour may have removed substructure support. Unless closely monitored it may be necessary to close the bridge until corrective action is taken.

IMMINENT FAILURE CONDITION: Major deterioration or section loss present in critical structural components or obvious vertical or horizontal movement affecting structure stability. Bridge is closed to traffic but corrective action may put back in light service.

0 FAILED CONDITION: Out of service – beyond corrective action.

The following descriptions were used for the rating guidelines in the Summary of Findings:

TABLE 3: Structure Capacity- Item 42: Type of Service

The type of service on the bridge and under the bridge is indicated by a 2 digit code composed of

2 segments.

Segment Description Length

42A Type of service on bridge 1 digit

42B Type of service under bridge 1 digit

13599-12

The first digit indicates the type of service "on" the bridge and shall be coded using one of the following codes:

Code Description

1 Highway

2 Railroad

3 Pedestrian-bicycle

4 Highway railroad

5 Highway pedestrian

6 Overpass structure at an interchange or second level of a multilevel interchange

7 Third level (Interchange)

8 Fourth level (Interchange)

9 Building or plaza

0 Other

The second digit indicates the type of service "under" the bridge and shall be coded using one of the following codes:

Code Description

1 Highway, with or without pedestrian

2 Railroad

3 Pedestrian-bicycle

4 Highway railroad

5 Waterway

6 Highway waterway

7 Railroad waterway

8 Highway waterway railroad

9 Relief for waterway

0 Other

TABLE 3: Structure Capacity- Item 31: Design Loads

Code Description

1 M 9 or H 10

2 M 13.5 or H 15

3 MS 13.5 or HS 15

4 M 18 or H 20

5 MS 18 or HS 20

6 MS 18+Mod or HS 20+Mod

7 Pedestrian

8 Railroad

9 MS 22.5 or HS 25

0 Other or Unknown (describe on inspection reporting form)

13599-13

TABLE 3: Structure Capacity- Rating Method

1 Load Factor (LF)

2 Allowable Stress (AS)

3 Load and Resistance Factor (LRFR)

4 Load Testing

5A No rating analysis performed, but assessed based on the level of service currently using the structure.

5N No rating analysis performed, but could be performed.

5X No rating analysis performed, no drawings available for calculations, and assessment based on the level of service currently using the structure is not possible.

TABLE 3: Structure Capacity- Item 41: Structure Status

A Open, no restrictions.

B Open, posting recommended but not legally implemented (all signs not in place or not correctly implemented).

D Open, would be posted or closed except for temporary shoring, etc. to allow for unrestricted traffic.

E Open, temporary structure in place to carry legal loads while original structure is closed and awaiting replacement or rehabilitation.

G New structure not yet open to traffic.

K Bridge closed to all traffic.

P Posted for load (may include other restrictions such as temporary bridges which are load posted).

R Posted for other load-capacity restriction (speed, number of vehicles on bridge, etc.)

TABLE 3: Structure Capacity- Item 70: Posting

5 No posting required. Equal to or above state legal loads.

4 Posting required. 0.1-9.9% below state legal loads.

3 Posting required. 10.0-19.9% below state legal loads.

2 Posting required. 20.0-29.9% below state legal loads.

1 Posting required. 30.0-39.9% below state legal loads.

0 Posting required. Greater than 39.9% below state legal loads.

TABLE 5: Channel Scour- Channel Profile Change

N None: Initial Survey.

1 Minor: Less than 1 ft change.

2 Moderate: Less than 2 ft change.

3 Significant: Greater than 2ft change and the safety of the structure is affected.

13599-14

TABLE 7: Prior Report – Defects Progression since Previous Inspection

Code Description

1 No change from previous rating.

2 Minor: change of 1 on NBI item.

3 Significant: change of 2 on NBI item.

TABLE 9: Inspection Procedures – Recommended Actions

0 None

1 Close structure

2 Restrict traffic

3 Repair structure

4 Monitor structure

5 Other

13599-15

BRIDGE INSPECTION RECORD

ITEM # 72: APPROACH FEATURES

Rating Guidelines

CODE DESCRIPTION

8 Speed reduction is NOT required.

6 A VERY MINOR speed reduction is required.

3 A SUBSTANTIAL speed reduction is required.

Components Rating

Rating Component Remarks

3 1. Horizontal Alignment

3 2. Vertical Alignment

3 General Rating Condition (NBI Item #72)

13599-16

ITEM # 72: APPROACH FEATURES (CONTINUED)

Approach Structural Rating Guidelines

N NOT APPLICABLE

9 EXCELLENT CONDITION

8 VERY GOOD CONDITION: No problems noted.

7 GOOD CONDITION: Some minor problems.

6 SATISFACTORY CONDITION: Structural elements show some minor deterioration.

5 FAIR CONDITION: All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

4 POOR CONDITION: Advanced section loss, deterioration, spalling or scour.

SERIOUS CONDITION: Loss of section, deterioration, spalling or scour has seriously affected primary structural components. Local failures are possible. Fatigue cracks in steel or shear cracks in concrete may be present.

CRITICAL CONDITION: Advanced deterioration of primary structural elements. Fatigue cracks in steel or shear cracks in concrete may be present or scour may have removed substructure support. Unless closely monitored it may be necessary to close the bridge until corrective action is taken.

IMMINENT FAILURE CONDITION: Major deterioration or section loss present in critical structural components or obvious vertical or horizontal movement affecting structure stability. Bridge is closed to traffic but corrective action may put back in light service.

Approach Structural Components Rating

Rating Component Unit Amt Remarks

N 1. Relief Joints LF

N 2. Approach:

a) Guardrail LF

8 b) Pavement SF 1380

6 c) Embankment EA 4

N 3. Load Posting Sign EA

7 4. Hazard Markers EA 3 Needs 1

13599-17

ITEM #36: TRAFFIC SAFETY FEATURES

CODE DESCRIPTION

1 Inspected feature MEETS currently acceptable standards.

0 Inspected feature DOES NOT currently meet acceptable standards or a safety feature is required and NONE

IS PROVIDED.

0 1. Bridge Rails LF 106 12’-6” post spacing, 32” ht.

N 2. Transition EA

N 3. Approach Rails LF

1 4. End Treatments EA 4

13599-18

ITEM #58: DECK FEATURES

9 EXCELLENT CONDITION

8 VERY GOOD CONDITION: No problems noted.

7 GOOD CONDITION: Some minor problems.

6 SATISFACTORY CONDITION: Structural elements show some minor deterioration.

5 FAIR CONDITION: All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

4 POOR CONDITION: Advanced section loss, deterioration, spalling or scour.

3 SERIOUS CONDITION: Loss of section, deterioration, spalling or scour has seriously affected primary structural components. Local failures are possible. Fatigue cracks in steel or shear cracks in concrete may be present.

CRITICAL CONDITION: Advanced deterioration of primary structural elements. Fatigue cracks in steel or shear cracks in concrete may be present or scour may have removed substructure support. Unless closely monitored it may be necessary to close the bridge until corrective action is taken.

IMMINENT FAILURE CONDITION: Major deterioration or section loss present in critical structural components or obvious vertical or horizontal movement affecting structure stability. Bridge is closed to traffic but corrective action may put back in light service.

7 1. Wearing Surface SF 810 27X30

6 2. Deck Structural Condition SF 810 27X30

N 3. Curbs LF

N 4. Median SF

N 5. Sidewalk SF

N 6. Parapet LF

6 7. Railing EA 2 Collision damage to end treatment

7 8. Drains EA

N 9. Lighting EA

7 10. Utilities EA 2

N 11. Expansion Joints LF

6 General Rating Condition (NBI Item # 58)

13599-19

ITEM # 59: SUPERSTRUCTURE FEATURES

9 EXCELLENT CONDITION

8 VERY GOOD CONDITION: No problems noted.

7 GOOD CONDITION: Some minor problems.

6 SATISFACTORY CONDITION: Structural elements show some minor deterioration.

5 FAIR CONDITION: All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

4 POOR CONDITION: Advanced section loss, deterioration, spalling or scour.

3 SERIOUS CONDITION: Loss of section, deterioration, spalling or scour has seriously affected primary structural components. Local failures are possible. Fatigue cracks in steel or shear cracks in concrete may be present.

CRITICAL CONDITION: Advanced deterioration of primary structural elements. Fatigue cracks in steel or shear cracks in concrete may be present or scour may have removed substructure support. Unless closely monitored it may be necessary to close the bridge until corrective action is taken.

IMMINENT FAILURE CONDITION: Major deterioration or section loss present in critical structural components or obvious vertical or horizontal movement affecting structure stability. Bridge is closed to traffic but corrective action may put back in

N 1. Bearing Devices EA

5 2. Girders/Beams A. General EA 4 There are shear cracks that vary from .02 to .06”.

5 B. Cross Frame EA 2 End Diaphragms have multiple cracks

N C. Bracing LF

N 3. Floor Beams EA

N 4. Paint SF

5 General Rating Condition (NBI ITEM # 59)

13599-20

ITEM #60: SUBSTRUCTURE FEATURES

9 EXCELLENT CONDITION

8 VERY GOOD CONDITION: No problems noted.

7 GOOD CONDITION: Some minor problems.

6 SATISFACTORY CONDITION: Structural elements show some minor deterioration.

5 FAIR CONDITION: All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

4 POOR CONDITION: Advanced section loss, deterioration, spalling or scour.

3 SERIOUS CONDITION: Loss of section, deterioration, spalling or scour has seriously affected primary structural components. Local failures are possible. Fatigue cracks in steel or shear cracks in concrete may be present.

CRITICAL CONDITION: Advanced deterioration of primary structural elements. Fatigue cracks in steel or shear cracks in concrete may be present or scour may have removed substructure support. Unless closely monitored it may be necessary to close the bridge until corrective action is taken.

IMMINENT FAILURE CONDITION: Major deterioration or section loss present in critical structural components or obvious vertical or horizontal movement affecting structure stability. Bridge is closed to traffic but corrective action may put back in

N 1. Abutments

a) Wings EA

N b) Backwall SF Not visible due to end diaphragms

N c) Bearing Seats EA

7 d) Breast Wall SF 240 Approx 30’x4’x2

N e) Footing SF

N f) Piles EA

N g) Bracing LF

N h) Scour / Erosion EA

N i) Settlement EA

13599-21

ITEM #60: SUBSTRUCTURE FEATURES (CONTINUED)

9 EXCELLENT CONDITION

8 VERY GOOD CONDITION: No problems noted.

7 GOOD CONDITION: Some minor problems.

6 SATISFACTORY CONDITION: Structural elements show some minor deterioration.

5 FAIR CONDITION: All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

4 POOR CONDITION: Advanced section loss, deterioration, spalling or scour.

3 SERIOUS CONDITION: Loss of section, deterioration, spalling or scour has seriously affected primary structural components. Local failures are possible. Fatigue cracks in steel or shear cracks in concrete may be present.

CRITICAL CONDITION: Advanced deterioration of primary structural elements. Fatigue cracks in steel or shear cracks in concrete may be present or scour may have removed substructure support. Unless closely monitored it may be necessary to close the bridge until corrective action is taken.

IMMINENT FAILURE CONDITION: Major deterioration or section loss present in critical structural components or obvious vertical or horizontal movement affecting structure stability. Bridge is closed to traffic but corrective action may put back in

N 2. Piers / Bents / Piles

a) Caps EA

N b) Bearing Seats EA

N c) Column, Stem, Wall SF

N d) Footing SF

N e) Piles EA

N f) Bracing LF

N g) Scour / Erosion EA

N h) Settlement EA

7 General Rating Condition (NBI Item # 60)

13599-22

ITEM # 61: CHANNEL / CHANNEL PROTECTION

N Not applicable. Use when bridge is not over a waterway (channel).

9 There are no noticeable or noteworthy deficiencies which affect the condition of the channel.

8 Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition.

7 Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift.

6 Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly.

5 Bank protection is being eroded. River control devices and/or embankment have major damage. Trees and brush restrict the channel.

4 Bank and embankment protection is severely undermined. River control devices have severe damage. Large deposits of debris are in the channel.

3 Bank protection has failed. River control devices destroyed. Stream bed aggradation, degradation or lateral movement has changed the channel to now threaten the bridge and/or approach roadway.

2 The channel has changed to the extent the bridge is near a state of collapse.

1 Bridge closed because of channel failure. Corrective action may put back in light service.

0 Bridge closed because of channel failure. Replacement necessary.

7 1. Channel Scour

8 2. Embankment Erosion

8 3. Drift

8 4. Vegetation

N 5. Rip Rap

7 General Rating Condition (NBI ITEM 61)

13599-23

ITEM # 71: WATERWAY ADEQUACY

Principal Arterials – Interstate

Minor Arterial / Major

Collectors

Minor Collectors Description

N N N Bridge not over a waterway.

9 9 9 Bridge deck and roadway approaches above flood water elevations (high water). Chance of overtopping is remote.

8 8 8 Bridge deck above roadway approaches. Slight chance of overtopping roadway approaches.

6 6 7 Slight chance of overtopping bridge deck and approaches.

4 5 6 Bridge deck above roadway approaches. Occasional overtopping of roadway approaches with insignificant delays.

3 4 5 Bridge deck above roadway approaches. Occasional overtopping of roadway approaches with significant delays.

2 3 4 Occasional overtopping of bridge deck and roadway approaches with significant traffic delays.

2 2 3 Frequent overtopping of bridge deck and roadway approaches with significant traffic delays.

2 2 2 Occasional or frequent overtopping of bridge deck and roadway approaches with severe traffic delays.

0 0 0 Bridge closed.

9 NBI Item # 71

13599-24

ITEM # 113: SCOUR CRITICAL BRIDGES

N Bridge not over waterway.

U Bridge with "unknown" foundation that has not been evaluated for scour. Since risk cannot be determined, flag for monitoring during flood events and, if appropriate, closure.

T Bridge over "tidal" waters that have not been evaluated for scour, but considered low risk. Bridge will be monitored with regular inspection cycle and with appropriate underwater inspections. ("Unknown" foundations in "tidal" waters should be coded U.)

9 Bridge foundations (including piles) on dry land well above flood water elevations.

Bridge foundations determined to be stable for assessed or calculated scour conditions; calculated scour is above top of footing.

8P Bridge is a culvert-type structure with paved bottom.

8L Bridge has been evaluated / assessed as a low risk structure and no further study is required.

7 Countermeasures have been installed to correct a previously existing problem with scour. Bridge is no longer scour critical.

6 Scour calculation/evaluation has not been made. (Use only to describe case where bridge has not yet been evaluated for scour potential.)

6R Bridge is scheduled for major rehabilitation or replacement within the next 5 years; the scour study is deferred to the location/design phase of the bridge project. Periodic monitoring may be necessary.

6U

Bridge foundations are unknown. The bridge site conditions have been evaluated / assessed with cursory study in the field and office, and the risk of potential damage form scour is judged to be moderate or mild.

Structure has no history of scour problems. Further evaluation is deferred. If the risk of damage from potential or actual scour damage is judged to be severe, additional scour studies will be undertaken including borings or others means of subsurface exploration to ascertain foundation and supporting soil conditions.

Bridge foundations determined to be stable for calculated scour conditions; scour within limits of footing or piles.

4 Bridge foundations determined to be stable for calculated scour conditions; field review indicates action is required to protect exposed foundations from effects of additional erosion and corrosion.

13599-25

Bridge is scour critical; bridge foundations determined to be unstable for calculated scour conditions:

- Scour within limits of footing or piles.

- Scour below spread-footing base or pile tips.

3M Bridge is rated as scour critical on the basis of an evaluation and/or analysis; the potential risk is judged to be mild or moderate, and no actions are planned other than monitoring during routine inspections and after flood events.

3C Bridge is rated as scour critical on the basis of an evaluation and/or analysis; the potential risk is judged to be severe and scour countermeasures are planned. Monitoring is to be performed until scour countermeasures are in place.

2 Bridge is scour critical; field review indicates that extensive scour has occurred at bridge foundations.

Immediate action is required to provide scour countermeasures.

1 Bridge is scour critical; field review indicates that failure of piers/abutments is imminent. Bridge is closed to traffic.

0 Bridge is scour critical. Bridge has failed and is closed to traffic.

Component Rating

8L NBI Item # 113

13599-26

CHANNEL PROFILE

13599-27

NBI FORM

(202) Army Bridge Inventory Structure Number: DAPTRAHUA013599

(8) NBI Structure Number: DAPTRAHUA013599

(1) State Arizona (54) Min Vert Underclearance N 0.00

(2) District 00 (55) Min Lat Underclrnc-Right 99.9

(3) County Cochise (56) Min Lat Underclrnc-Left 0.0

(4) Place Fort Huachuca (58) Deck 6

(5) Inventory Route 180000000 (59) Superstructure 5

(6) Features Intrsct SLAUGHTERHOUSE WASH (60) Substructure 7

(7) Facility Carried CANELO RD (61) Chn & Chn Protection 7

(8) Structure Number DAPTRAHUA013599 (62) Culverts N

(9) Location DEAD MANS CURVE (63) Method to det. Operating Rating 5

(10) Min Vert Clrnc 99.99 (64) Operating Rating 36.3

(11) Kilometer Point 0.000 (65) Method to det. Inventory Rating 5

(12) Highway Network 0 (66) Inventory Rating 32.4

(13) LRS Inventory Rt (67) Structural Evaluation 5

(16) Latitude 31ø 34' 01.88" (68) Deck Geometry

(17) Longitude 110ø 23' 44.92" (69) Underclrnc Vert/Horz

(19) Bypass, Detour Length 000 (70) Bridge Posting 5

(20) Toll 3 (71) Waterway Adequacy 9

(21) Custodian 74 (72) Approach Rdwy Align 3

(22) Owner 74 (75) Type of Work 381

(26) Functional Classification 09 (76) Length of Improvement 15.1

(27) Year Built 1960 (90) Inspection Date 0209

(28) Lanes On/Under 0200 (91) Inspection Frequency (Mo) 24

(29) ADT 001000 (92) Critical Feature Insp. N N N

(30) Year of ADT 2009 (93) Critical Insp. Date

(31) Design Load 5 (94) Bridge Impvmnt Cost 000107

(32) App Rdwy Width 7.0 (95) Roadway Impvmnt Cost 000011

(33) Bridge Median 0 (96) Total Project Cost 000118

(34) Skew Degree 00 (97) Yr of Impvmnt Cost Est 2009

(35) Stru Flared 0 (98) Border Bridge

(36) Safety Features 0NN1 (99) Border Bridge Str No

(37) Historical Significance 5 (100) Defense Hwy Designation 0

(38) Navigation Ctrl N (101) Parallel Stru Designtn N

(39) Navigation Vertical Clearance 0.0 (102) Direction of Traffic 2

(40) Navigation Horizontal Clearance 0.0 (103) Stru Designation

(41) Stru. Open/Post/Close A (104) Hwy Sys of Inventory Rt 0

(42) Type of Service 15 (105) Federal Lands Highways 0

(43) Stru Type Main 104 (106) Year Reconstructed 0000

(44) Stru Type-App Spans 000 (107) Deck Structure Type N

(45) No. Spans-Main 001 (108) Wearing Surf Protective NNN

(46) No. Approach Spans 0000 (109) Ave Daily Truck Traffic 10

(47) Total Horz Clearance 7.3 (110) Designated Natl Network 0

(48) Length of Max Span 8.5 (111) Pier/Abutment Protection 1

(49) Structure Length 8.5 (112) NBIS Bridge Length Y

(50) Curb/Sidewalk Width L 0.0, R 0.0 (113) Scour Critical Bridge 8

(51) Bridge Rdwy Width C-C 7.0 (114) Future ADT 001000

(52) Deck Width O-O 8.3 (115) Year of Future ADT 2027

(53) Vert Clrnc over Rdwy 99.99 (116) Min Nav Vert Clearance 0.0

Army Bridge Inventory 200 Items

(200) COE Division

(201) COE District

(202) ABI Structure Number DAPTRAHUA013599

(203) Inspection Office ERDC

(204) Inspector G. VELAZQUEZ

(205) Inspection Cost 003000

(206) Cooper's Loading

(207) Railroad Stru Number

(208) Name of Railroad

(209) Recommended Speed Limit

(210) Posted Speed Limit (KPH)

(211) MACOM W-TRADOC

(212) Installation Name FORT HUACHUCA

(213) MLC 1-Way Wheel N

(214) MLC 1-Way Track N

(215) Installation Number 04005

(216) Seismic Category B

(217) Acceleration Coefficient 0.07

(218) Soil Site Coefficient 1.2

(222) ISR General Bridge Condition A

(223) MLC 2-way Wheel

(224) MLC 2-way Track

Sufficiency Rating = 068.0 Functionally Obsolete

13599-28

DEFICIENCIES AND RECOMMENDATIONS

All cost data based on the California Department of Transportation’s report

“2006 Contract Cost Data- A Summary of Cost by Items for Highway Construction Projects” The estimated quantities and unit costs provided below should only be used for initial reference purposes.

More accurate estimates will be required for purposes of plans and specifications.

Maintenance & Repairs Items

Table 10

PHOTO PROBLEM RECOMMENDATION QTY AMOUNT

1 Collision damage to end treatment. Replace post and rail end 1 $500

1 Inadequate post spacing Add 8 additional posts to strengthen rail 8 $2000

2 Exposed rebar with no section loss.

Remove loose material, clean rebar and patch with suitable concrete repair material

2 SF $250

3 Spall in underside is 7” deep See 2 above N/A

4 Transverse and longitudinal cracks in deck underside. Monitor N/A

5 End diaphragm has multiple shear cracks at bearing area See 6 below. N/A

6 Beam has diagonal cracks near bearing.

Load rate and post to prevent shear failure. Cost is contingent on availability of as-built drawings.

1 $5000

7 Vertical cracks on beams at mid-span. Monitor N/A

8 Erosion hole downstream. Fill with suitable material 1 CY $120

TOTAL: $7870

13599-29

PHOTO #1

PHOTO #2

13599-30

PHOTO #3

PHOTO #4

13599-31

PHOTO #5

PHOTO #6

BEAM DIAPHRAGM

BEAM DIAPHRAGM

CRACKING

13599-32

PHOTO #7

PHOTO #8