080805000003192_FS_Bridge_Inspection_2018.pdf

Structure Name: (8)Structure No:

(5D)Route:

Forest:

69.0

13.0

(45)No. Main Spans: 1

(46)No. Appr Spans: 0

No. Substrs: 2

(in Tons) Inventory Safe Load

Capacity

HL-93 (RF) -

HS-20

Type 3

Type 3S2 Yes/No

Type 3-3 Y 24 Months

NRL (RF) N Months

Rating Date: N Months

(41) Posting Status:

(70) Posting Capacity:

(31)Design Load:

(63,65)Method of Load Rating:

Yes No X

Date:

Inspection Team: Leader: Jurisdiction:

Weather: Latitude:

Township: 0 0 Meridian:

(9)Location:

Narrative Report: (Add additional sheets if necessary)

VIRGINIA TRUE 75

AMHERST TRUE

GPI

Longitude: -79.26455

Re-rating required based on this inspection?

Substr Type:

FS

Inspection Template Revision Date: 05/31/2017

Infra data used for this report was pulled on: 05/30/18

1/4 Sect:

10:00 AM

(92A) Fracture Critical

(92B) Underwater

(92C) Special

UNDER H10-44

3 - LRFR REPORTED AS TONS

Time Completed:

8/22/2018 Time Started:

INSPECTION INFORMATION

5/29/2013 Posted For Load Or Other Restrictions > 39.9% Below

Critical Findings:

SPECIALIZED INSPECTIONS:

(43B)Superstr Type:

Specialized Inspections Required

(23 CFR 650.303)

Based on this inspection, is additional inspection work needed in these specialized inspection areas?

If Yes How Soon Needed?

Column Pier

(43A)Superstr Material:

(44A)Superstr Material: Other

Steel

Concrete, ReinforcedSubstr Material:

(44B)Superstr Type:

USDA FOREST SERVICE, REGION 8

PEDLAR RIVER(11)Milepost: 0.3000

BRIDGE IDENTIFICATION AND LOCATION

080805000003192

George Washington & Jefferson National Forests

(32)Approach Roadway Width:

(48)Max Span:

(52)Deck Width out-out: 15.7(51)Roadway Width (Curb to Curb):

Security ID 0808PEDLAR RANGER DISTRICT

76 (6)Feature Crossed:

16.0

BRIDGE DESCRIPTION and MEASUREMENTS

George Washington & Jefferson National ForestsDistrict:

66.5

(27)Year Built:

0.0

Latex Concrete

(108A)We aring

Surface:

Concrete Cast-In-Place

Truss - Pony

NBIS Bridge Opening:

99 00

BRIDGE RATING SUMMARY:

(47)Horizontal (53)Vertical (34)Skew:

(107)Deck StructureType:

JORDAN

Recommended Inspection Frequency:

Andrew Chen

37.74983333

2:45 PM

Partly cloudy

BETWEEN SR 605 AND PARKWA

Months

0 Range: 0 Section:

Operating

(49)Overall Br Length:

Description:

Other

Posting

Special Equipment Need

8/22/2018

Milepost: 0.3000 080805000003192

CODE

* 1. F

C1. -

C2. P

C3. -

C4. P

C5. F

C6. F

C7. No

* 1. -

* 2. F

* 3. F

* 4. P

P

P

C1. F

C2. F

C3. G

C4. G

*1. G *2. F *3. F

*4. - *5. - *6. - *7. - *8. -

*9. P

*10. NOB

*11. - *12. F *13. G *14. - *15. - *16. - *17. - *18. - *19. - *20. - *21. -

Areas of section loss of the bottom chords (see FCM report)

Bracing

CONDITION CODES and REMARKS

Minor scaling of surface

Wearing Surface

Deck Slab/Panels/Joists

REMARKS

(Overall Code for item, to be reported to

FHWA, in bold box)

58. DECK:

Posts/Piles/Tie Backs

Stacked stone walls have settled

Girders

a. Diaphragms

Typical pack rust with section loss at connections (see FCM report)

Typical up to 1/4" high gap with pack rust at the ends of bottom flanges

b. Bracing

a. Chords

Trusses

Structure No:

Date:

Footings Piles

Erosion along the Abutment 1 slope, within 1'-0" of the abutment

Caps

Backing Planks

Sills/Footings

Settlement

Debris along curblines

Stringers

Erosion or Scour

* Only these items are used in the determination of the overall condition rating for that category, i.e. Deck, Superstructure, Substructure. Other items should be rated and remarked on but NOT included in determining the overall category rating. Items enumerated using a C (ex. C1) should be commented on but not rated. See the FHWA Coding Guide for further information as to what is included in condition ratings.

Also includes wingwalls connected to the superstructure above the beam seat.

Includes wingwalls integral with the abutment or the portion of the wingwall below the bearing seat.

Deteriorated throughout, likely from freeze thaw and/or chemical action

59. SUPERSTRUCTURE:

Sidewalks

Drains and Drainage Clogged drains from debris

Expansion Joints

Curbs

Rideability

Cleanliness

Utilities

Floor Beams

60. SUBSTRUCTURE:

Caps

Erosion or Scour

Settlement

Alignment (tipping, tilting, etc.)

Crib Walls/Tie Backs

Caps

Footings

Wingwalls

A B

U T

M E

N T

S P

IE

R

S

Timber Abutments (incl. WW)

Other Abutments

Columns or Walls

Structure Name:

Route:

Walls

Piles

b. Portals

c. Verticals/Diagonals

Bearing Devices

Paint

d. Bracing

Deflection Under Load

Vibration Under Load

Alignment (tilting, rotating, etc.)

JORDAN

Fair overall, missing rivet heads at two gusset plates (see FCM report)

Typical pack rust between bearing plates

Deteriorating paint with rust spots throughout, particularly along flanges.

Milepost: 0.3000

CODE

1. F

2. F

3. F

4. F

5. F

6. 10.3

N *1. -

*2. -

*3. -

*4. -

5. -

F

1. G

2. F

3. F

4. P

36A 0 36B 0 36C 0 36D 0

A. NOB

B. NOB

C. NOB

D. NOB

1. C

2. NOB

1. G

2. G

N

CONDITION RATING OF EACH MEMBER OR ELEMENT

-NOT APPLICABLE

-APPLICABLE, BUT NO OBSERVED. (Give reason unless obvious)

-ELEMENT IN NEW OR GOOD CONDITION WITH NO REPAIRS NECESSARY.

-ELEMENT IS STILL PERFORMING THE FUNCTION FOR WHICH IT WAS INTENDED BUT MAY NEED MAINTENANCE.

-ELEMENT IS PERFORMING AT REDUCED CAPACITY.

-ELEMENT IS NOT PERFORMING THE FUNCTION FOR WHICH IT WAS INTENDED

* Only these items are used in the determination of the overall condition rating for that category, i.e. Deck, Superstructure, Substructure. Other items should be rated and remarked on but NOT included in determining the overall category rating. Items enumerated using a C (ex. C1) should be commented on but not rated. See the FHWA

Coding Guide for further information as to what is included in condition ratings.

71. WATERWAY ADEQUACY:

113. SCOUR CRITICAL BRIDGES:

Deteriorated posts, missing markers on both upstream approaches (2)Object Markers

68. DECK GEOMETRY:

Horizontal

Vertical

29. ROAD ADT

Structure Name:

Route:

JORDAN

Signing No "One Lane Bridge" signs on either approach

Clear Height Height (feet) from thalwag to bottom of lowest superstructure member

62. CULVERTS

CONDITION CODES and REMARKS (continued)

Structure No.:

Date:

080805000003192

8/22/2018

G = GOOD

C = CRITICAL

72. APPROACH ROADWAY ALIGNMENT:

67. STRUCTURAL EVALUATION

NOB

F = FAIR

P = POOR

69. UNDERCLEARANCE:

Foundations

Shoulder Embankment

Roadway Embankment

APPROACH CONDITION:

Headwall/Wingwall

61. CHANNEL and CHANNEL PROTECTION:

(Overall Code for item, to be reported to

FHWA, in bold box)

REMARKS

Channel Scour/Erosion Scour and erosion encroaching on the Abutment 1 slope

Water flow is directed toward Abutment 1

Erosion of the slope at Abutment 1 comes within 1'-0" of the abutment. Channel Protection

Observed Lateral Movement

Surfacing

(Not needed for reporting to FHWA)

Vegetation

Waterway Obstructions/Drift

Shape

Seams or Joints

Material Condition

Approach Rail Ends

Approach Guardrails

Approach Settlement

APPRAISAL CODES and REMARKS

Bridge Railing No railing present

C O

N D

IT

IO

N o f e le m e n ts

No approach guardrail

Up to 1" high at Approach Back and 1 1/2" high at Approach Ahead

36. TRAFFIC SAFETY FEATURES:

Rail Transitions

Milepost: 0.3000 Structure No.:

Work Item

Category Detailed Work Item Description

Approach

Condition

Remove vegetation on approaches obscuring the bridge and the object markers.

Approach

Condition Repair settled approaches.

Traffic Safety

Features Install approach guardrail.

Traffic Safety

Features Install bridge railing.

Traffic Safety

Features

Install "One Lane Bridge" signs on both approaches.

Traffic Safety

Features

Replace missing upstream object markers.

Deck Clean off the debris on the deck and in the deck drains.

Deck Replace both curbs full length.

Superstructure Replace broken rivets at L1 and U2

Downstream with bolts (13).

Whole Bridge Spot paint bearings and stringers and truss elements at connections.

Superstructure

Retrofit or replace the bottom chord members at Upstream and

Dowsntream L3-L4 and L10-L11.

Substructure Repair delaminated and spalled

Abutment 2 cap.

Substructure Repair settlement of the stacked stone below both abutment caps.

Channel Install scour protection in front of

Abutment 1.

8/22/2018Date:JORDAN

Route:

Structure Name:

Unit

RECOMMENDED WORK ITEMS

Work Item Quantity

08080500000319276

8002002

8001002

8003002

Work Item

Code

7004001

7001001

4004003

#N/A

8003001

30060010010

4004003

5003001

5005001

6001003

#N/A

Surfacing - Place Aggregate

Surface

Approach Railing - Install Bridge

Approach Rail

LS

LF

LS/BBrush Approaches

Signing - Repair/Replace Approach

Signs

Signing - Repair/Replace Object

Markers

2EA

LF

EA

Bridge Railing - Upgrade Bridge

Railing

- xxx

Concrete Curb - Repair/Replace, Greater than 10 cf

Steel - Repair/Replace Steel

Members

SF

CF

LBS

SF

#N/A

Clean Deck

Sandblast w/Containment and Paint

Steel - Repair/Replace Steel

Members

Concrete Abutments/Piers -

Repair/Patch

Other Abutments/Piers -

Repair/Replace Timber Sill/Footing

Channel Protection - Add/Repair

Riprap

LBS

SF

LS/A

CY

#N/A xxx

Date:

76 Milepost: 0.3000 Structure No:

Item

Reference

36.1

36.2

59.4.a

59.4.c

59.4.c

29.C2

60.1

60.3

60.3

61.1

JORDANStructure Name:

Route:

8/22/2018

080805000003192

Approach Back Upstream sign missing and Approach Ahead Upstream post missing. Remaining posts are deteriorated.

Severe pack rust at multiple connections. Bottom chord angles have severe section loss at L3-L4 and L10-L11 both

Upstream and Downstream (four total areas). See FCM report for additional details.

Missing 6 of 7 rivet heads of U2-L3 Downstream at U2 gusset plate connection.

The heads of 7 out of 7 rivets at L1-U2 (Downstream face) at L1 are missing and painted-over. Not a FCM member.

Paint failures with rust widespread throughout the structure. Typical corrosion and areas of pack rust largely concentrated at the lower chord joints. Most defects are typical at most to all locations.

ITEM REFERENCE AND REMARKS ~ NARRATIVE REPORT

Both curbs deteriorated throughout, more severe along the Back half of the bridge. Spalling up to 2 1/2" deep in multiple areas along the top of the curbs, 12 SF of Upstream and 6 of Downstream curb. Horizontal cracking up to

1/16" wide with heavy efflorescence along both curb fasciae near Abutment 1.

The dry-stacked stone walls beneath both concrete abutment caps have settled up to 2'-6" high.

The Abutment 2 cap has delaminations, cracking, and spalling with exposed rebar on the underside. Two spalls in Bay

4 and Bays 6 amd 7: 2'-6" wide x 6" deep x 6" high each with nearby delamination. Bays 5 - 7 are cracked with areas of delamination up to 2'-6" long x 5'-0" wide.

Erosion, and undercutting along the Back channel bank, upstream and downstream. Scour up to 4'-0" high just downstream of the bridge.

Remarks

Load posting signs present on both approaches.

Route: Milepost: 0.3000

Insert photo here.

Photo 1. Approach Ahead on Station

BRIDGE PHOTOS

Photo 2. Approach Back on Station

Insert photo here.

8/22/2018

080805000003192Structure No:

JORDANStructure Name:

BRIDGE PHOTOS - cont.

Photo 3. Looking Upstream from the Bridge Deck

Insert photo here.

Photo 4. Looking Downstream from the Bridge Deck

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

Insert photo here.

Photo 6. Looking Downstream - Elevation Profile

Photo 5. Looking Upstream - Elevation Profile

8/22/2018

Structure No: 080805000003192

BRIDGE PHOTOS - cont.

Structure Name:

JORDAN

Photo 8. Abutment 2 Elevation

8/22/2018

Structure No: 080805000003192

Insert photo here.

Insert photo here.

Photo 7. Abutment 1 Elevation

BRIDGE PHOTOS - cont.

Structure Name:

Photo 10. Typical Joint and Transition Sections at Approaches with Deck

8/22/2018

Structure No: 080805000003192

Insert photo here.

Insert photo here.

Photo 9. Underside of Deck - Typical

BRIDGE PHOTOS - cont.

Structure Name:

BRIDGE PHOTOS - cont.

Insert photo here.

Photo 11. Typical bridge posting sign, Approach Back sign shown (looking Ahead)

Insert photo here.

Photo 12. Missing object marker at Approach Back Upstream (looking Ahead)

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

BRIDGE PHOTOS - cont.

Insert photo here.

Photo 13. Approach pavement settlement at Approach Ahead end of deck (looking Downstream)

Insert photo here.

Photo 14. Typical deteriorated and spalled concrete curb, at Downstream Back end shown (looking Back)

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

BRIDGE PHOTOS - cont.

Insert photo here.

Photo 15. Typical curb fascia cracking and efflorescence, Upstream at Back end of curb shown (looking Ahead)

Insert photo here.

Photo 16. Typical minor pack rust along the bottom of the stringer at floor beam connection, Floor Beam 1 Stringer 8 shown (looking Downstream)

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

BRIDGE PHOTOS - cont.

Insert photo here.

Photo 17. Typical unfilled holes in the bottom flanges of the floor beams, Floor Beam 2 at Downstream shown

(looking Ahead)

Insert photo here.

Photo 18. Pack rust and section loss at bottom flange of Floor Beam 2 to Truss 1 connection (looking Upstream)

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

BRIDGE PHOTOS - cont.

Insert photo here.

Photo 19. Typical rusting of steel members, Upstream L7-U7 interior face shown (looking Upstream)

Insert photo here.

Photo 20. Typical minor pack rust and pitting at Downstream L12 (looking Downstream)

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

BRIDGE PHOTOS - cont.

Insert photo here.

Photo 21. Missing rivet heads of Downstream L1-U2 at L1 joint (looking Upstream)

Insert photo here.

Photo 22. Missing rivet heads of Downstream L3-U2 at U2 joint (looking Upstream)

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

BRIDGE PHOTOS - cont.

Insert photo here.

Photo 23. Upstream L3-L4 pack rust and section loss (looking Ahead)

Insert photo here.

Photo 24. Upstream L10-L11 pack rust and section loss (looking Back)

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

BRIDGE PHOTOS - cont.

Insert photo here.

Photo 25. Downstream L10-L11 pack rust and section loss (looking Downstream)

Insert photo here.

Photo 26. Downstream L7-L8 at L8 pack rust pushing out connection angle (looking Ahead)

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

BRIDGE PHOTOS - cont.

Insert photo here.

Photo 27. Corrosion and pack rust at Abutment 2 Upstream bearing (looking Ahead)

Insert photo here.

Photo 28. Abutment 1 settlement of stacked stone below the concrete cap (looking Back)

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

BRIDGE PHOTOS - cont.

Insert photo here.

Photo 29. Spalling with exposed rebar along bottom edge of Abutment 2 cap and settled stacked stone below cap

(looking Downstream)

Insert photo here.

Photo 30. Erosion and scour of the slope encroaching on Abutment 1 (looking Downstream)

Structure Name: JORDAN 8/22/2018

76 Structure No: 080805000003192

BRIDGE PHOTOS - cont.

Insert photo here.

Photo 31. Erosion and scour in the Back channel bank (looking Upstream)

Insert photo here.

Photo 32. Erosion and undercutting in the Back channel bank at Downstream corner of the slope (looking Back)

Structure Name: Date:

Route: 76 Milepost: 0.3000

10.5

2016 2018 2020 2022 2024 2026 2028

0 9.55 9.5 0 0 0 0 0

5 10.5 10.3 0 0 0 0 0

10 11.8 11.8 0 0 0 0 0

15 12.8 12.5 0 0 0 0 0

20 13.4 13.4 0 0 0 0 0

25 13.4 13.4 0 0 0 0 0

30 13.1 13.1 0 0 0 0 0

35 13.2 12.9 0 0 0 0 0

40 12.6 12.6 0 0 0 0 0

45 12.5 12.5 0 0 0 0 0

50 11.6 12 0 0 0 0 0

55 10.5 10.5 0 0 0 0 0

60 10.6 10.6 0 0 0 0 0

65 10.5 10.5 0 0 0 0 0

66 10.5 10.5 0 0 0 0 0

Water Surface 12.7 12.3

Channel Cross Section

Horizontal Dist

Measured from A-1 Distance Measured from Top of Curb U.S Side @ Each Rail Post

8/22/2018

Structure No: 080805000003192

JORDAN

Input Cross-Section Data:

Height (feet) from thalwag to bottom of lowest superstructure member

0 10 20 30 40 50 60 70

Top of Curb

(Substructure elements can be inserted in the cross-section using Insert, Shapes )

Structure Name: Date:

Route: 76 Milepost: 0.3000

10.3

2016 2018 2020 2022 2024 2026 2028

0 9.5 9.5 0 0 0 0 0

5 11.4 11.1 0 0 0 0 0

10 12.8 12.5 0 0 0 0 0

15 13.4 13.2 0 0 0 0 0

20 13.3 13.1 0 0 0 0 0

25 12.9 12.9 0 0 0 0 0

30 12.7 12.5 0 0 0 0 0

35 12.3 12.6 0 0 0 0 0

40 12.1 12.6 0 0 0 0 0

45 11.3 11.3 0 0 0 0 0

50 10.6 10.6 0 0 0 0 0

55 10.2 10.2 0 0 0 0 0

60 10 10 0 0 0 0 0

65 9.9 9.9 0 0 0 0 0

66 10.1 10.1 0 0 0 0 0

Water Surface 12.8 12.3

Horizontal Dist

Measured from A-1 Distance Measured from Top of Curb D.S Side @ Each Rail Post

Channel Cross Section

JORDAN 8/22/2018

Structure No: 080805000003192

Height (feet) from thalwag to bottom of lowest superstructure member

Input Cross-Section Data:

0 10 20 30 40 50 60 70

Top of Curb

(Substructure elements can be inserted in the cross-section using Insert, Shapes )

Milepost:

ID

Description

Needed for Real Property Verification

N Re-rating required? (Enter Y/N)

Y Specialized Equipment Required? (Enter Y/N)

Insp Remarks

Approach Rail Ends (36D) 0

GPI

Andrew Chen

Insp Team

Transition (36B) 0

Approach Guardrail (36C) 0

Traffic Rail Safety Features Appraisal

Bridge Rail (36A) 0

Approach Align (72) 8

Underclr (69) N

Waterway Adq (71) 7

Str Eval (67) 5

Deck Geom (68) 5

Main Data Appraisal Data

Done By Name (Unit) REGIONAL OFFICE

Inspected By* Andrew Chen

Done By (Org) FS - FOREST SERVICE

Scour Crit Br (113) 6

Insp Resp Name FS - FOREST SERVICE

Culvert Cond (62) N

Channel Cond (61) 6

Supstr Cond (59) 5

Substr Cond (60) 6

Wear Srfc Cond 6

Deck Cond (58) 6

Inspection Cost

Aprch Cond F

Main Data Appraisal Data

Insp Team Leader

Inspection_Type ROUTINE (System Generated)

Inspection Date 8/22/2018 ROUTINE

Inspection Freq 24

Infra Summary Data

Structure Name: JORDAN 8/22/2018

Route: 76 0.3000 Structure No: 080805000003192

Date: 8/22/2018

Milepost: 0.3000 Structure No: 080805000003192

Spill-thru abutment

(trapazoidal channel configuration) Codings

Scour Scenarios Is Footing

Undermined?

Is Channel

Constriction greater than 10%?

Is Stream Laterally or Vertically

Unstable?

Is Flow

Attacking? Bank Erosion Other factors Scour Critical Code

Ideal field conditions. No active scour or stream stability issues no no no no none none 5

Footing Undermined yes - - - yes Fill in 2

Bridge Constricts Channel > 10% no yes no no none none 4

Bridge Constricts Channel > 10% plus Unstable or Attacking (evaluate severity, substrate) no yes 4 or 2

Bridge on Unstable Channel with riprap in good condition, size and quantity. no no yes no no none 5

Bridge on Unstable Channel with bank erosion and/or damaged riprap protection (evaluate severity) no no yes no yes Fill in 4 or 2

Designed countermeasures installed, stable and performing well. no no Fill in 7

Severe scour, abutment failing yes (undermined) 1 or 0

None of the above, Needs further review no no Yes Yes Yes none 6

Fill in

Scour Critical Coding, Item 113

Field Evaluation Guide

Parameters

Fill In

Route: 76

Structure Name: JORDAN

Fill in

Structure Name: Jordan Inspection Date: 8/22/18 Route & M.P.: F.S. 76 - M.P. 0.3 USDA Forest Service, Region 8

USDA FOREST SERVICE, REGION 8

FRACTURE CRITICAL MEMBER INSPECTION REPORT – TWO STEEL GIRDER

SUPPLEMENTAL TO ROUTINE INSPECTION , ITEM 59, SUPERSTRUCTURE

BRIDGE INFORMATION

Structure Name: Jordan

Route & M.P.: F.S. 76 - M.P. 0.3

Forest: George Washington & Jefferson National Forests

Fracture Critical Plan: Inspected per the attached Fracture Critical Plan.

INSPECTION DATA

Inspection Date: 08/22/18

Inspection Duration: 10:00 am to 2:45 pm

Inspection Team: Andrew Chen (Team Leader) and Sal Cefalu

Inspection Team Leader:

Andrew Chen

SUMMARY OF FINDINGS AND RECOMMENDATIONS

Specific details for fracture critical members are located in the findings portion of this report. Refer to the Routine Bridge Inspection Report for recommended work items and superstructure rating.

The truss bridge was originally constructed in 1927 with a wooden deck. At some point, possibly in the 1950’s or 1960’s, the wooden approach spans were removed, the timber deck was replaced with a concrete deck, and the roadway was widened.

Paint failures with rust widespread throughout the structure. Typical corrosion and areas of pack rust largely concentrated at the lower chord joints. Most defects are typical at most to all locations and are not specifically noted for each element.

Floor beam ends typically have drilled unfilled holes in the bottom flange, 4 at each end.

Typical pack rust with minor section loss along the bottom flange connected to the truss lower chords.

The interior bottom chord angles are typically bent downward from pack rust up to ½” wide at each connection with the floor beams. At these locations, there is section loss along the top of bottom legs of the chord angles. Due to restricted accessibility, precise loss is difficult to measure. Estimated loss up to 1/16” thick.

Typical throughout, the lower chord angles have pack rust at the connections, pushing out the gusset plates angle connections up to ¼” apart. There is severe section loss at bottom chord angles L3-L4 and L10-L11 both Upstream and Downstream (four total areas). These are at symmetrical members of the bridge. There is severe pack rust pushing apart the top leg of the bottom chord angle and the spacer plate up to ½” apart.

There is corrosion and section loss of both steel elements along the interface.

FRACTURE CRITICAL MEMBER IDENTIFICATION & FINDINGS

UPSTREAM TRUSS

Span Member Location

Type of Member Inspection Results/Comments *Photo Ref. #

1 L1-L2 Upstream Steel 2L6x6x7/16 No additional specific defects. N/A

1 L2-L3 Upstream Steel 2L6x6x7/16 No additional specific defects. N/A

1 U2-L3 Upstream Steel 2L5x3-1/2x1/4

6 of the 7 rivet heads at joint U2 (Upstream face) are missing. Pack rust developing between the upstream angle and the gusset plates at both joints. Pack rust between the spacers at joint L3.

N/A

1 L3-L4 Upstream

Steel 2L6x6x7/16 + 2ea 5x3/8 spacer bars

Severe pitting and section loss on both pairs of plates and the angles. Bottom angle legs down to 0.35” remaining thickness.

1 L3-U4 Upstream

Steel 2L5x3-1/2x1/4

No additional specific defects. N/A

1 L4-L5 Upstream

Steel 2L8-1/4x6-1/4x5/8

The angles are partially punched for rivets at L5 (holes are outlined on the angles, but not punched through the member).

N/A

1 U4-L5 Upstream

Steel 2L5x3‐1/2x1/4

No additional specific defects. N/A

1 L5-L6 Upstream

Steel 2L8-1/4x6-1/4x5/8

No additional specific defects. N/A

1 L5-U6 Upstream

Steel 2L5x3-1/2x1/4

Minor pack rust beginning to form between the upper chord and the gusset plate at L5 and U6.

N/A

1 L6-L7 Upstream

Steel 2L8-1/4x6-

1/4x5/8

No additional specific defects. N/A

1 U6-L7 Upstream

Steel 2L5x3-1/2x1/4

Minor pack rust beginning to form between the upper chord and the gusset plate at U6 and L7.

N/A

1 L7-L8 Upstream

Steel 2L8-1/4x6-

1/4x5/8

Pack rust and pitting at the left end of the splice plate at L8.

N/A

1 L7-U8 Upstream

Steel 2L5x3-1/2x1/4

Pack rust forming on the gusset plate at L9 just above the angle.

N/A

1 L8-L9 Upstream

Steel 2L8-1/4x6-

1/4x5/8

No additional specific defects. N/A

1 U8-L9 Upstream

Steel 2L5x3-1/2x1/4

No additional specific defects. N/A

1 L9-L10 Upstream

Steel 2L8-1/4x6-

1/4x5/8

Downstream angle is deformed at L9 at the floor beam.

N/A

1 L9-U10 Upstream

Steel 2L5x3-1/2x1/4

No additional specific defects. N/A

1 L10-L11 Upstream

Steel 2L6x6x7/16 + 2ea

5x3/8

Severe pitting and section loss on both pairs of plates and the angles. Vertical angle legs down to 0.35” remaining thickness.

1 U10-L11 Upstream

Steel 2L6x6x7/16 No additional specific defects. N/A

1 L11-L12 Upstream

Steel 2L6x6x7/16 No additional specific defects. N/A

1 L11-U12 Upstream

Steel 2L5x3-1/2x1/4

No additional specific defects. N/A

1 L12-L13 Upstream

Steel 2L6x6x7/16 No additional specific defects. N/A

DOWNSTREAM TRUSS

Span Member Location

Type of Member Inspection Results/Comments *Photo Ref. #

1 L1-L2 Downstream

Steel 2L6x6x7/16 No additional specific defects. N/A

1 L2-L3 Downstream

Steel 2L6x6x7/16 No additional specific defects. N/A

1 U2-L3 Downstream

Steel 2L5x3-1/2x1/4

6 of the 7 rivet heads at joint U2 (Downstream face) are missing with subsequent gouging of the downstream angle. These areas are painted-over.

1 L3-L4 Downstream

Steel 2L6x6x7/16 + 2ea 5x3/8 spacer bars

Severe pitting and section loss on both pairs of plates and the angles. Vertical angle legs down to 0.35” remaining thickness. Spacer plate remaining thickness 0.15".

N/A

1 L3-U4 Downstream

Steel 2L5x3-1/2x1/4

No additional specific defects. N/A

1 L4-L5 Downstream

Steel 2L8-1/4x6-

1/4x5/8

No additional specific defects. N/A

1 U4-L5 Downstream

Steel 2L5x3-1/2x1/4

No additional specific defects. N/A

1 L5-L6 Downstream

Steel 2L8-1/4x6-

1/4x5/8

No additional specific defects. N/A

1 L5-U6 Downstream

Steel 2L5x3-1/2x1/4

No additional specific defects. N/A

1 L6-L7 Downstream

Steel 2L8-1/4x6-

1/4x5/8

No additional specific defects. N/A

1 U6-L7 Downstream

Steel 2L5x3-1/2x1/4

No additional specific defects. N/A

1 L7-L8 Downstream

Steel 2L8-1/4x6-

1/4x5/8

No additional specific defects. N/A

1 L7-U8 Downstream

Steel 2L5x3-1/2x1/4

No additional specific defects. N/A

1 L8-L9 Downstream

Steel 2L8-1/4x6-

1/4x5/8

No additional specific defects. N/A

1 U8-L9 Downstream

Steel 2L5x3-1/2x1/4

No additional specific defects. N/A

1 L9-L10 Downstream

Steel 2L8-1/4x6-

1/4x5/8

No additional specific defects. N/A

1 L10-L11 Downstream

Steel 2L6x6x7/16 + 2ea 5x3/8

Severe pitting and section loss on both pairs of plates and the angles. Interior vertical angle leg down to 0.35” remaining thickness. Interior spacer plate section mostly gone.

1 U10-L11 Downstream

Steel 2L6x6x7/16 No additional specific defects. N/A

1 L11-L12 Downstream

Steel 2L6x6x7/16 Pack rust developing between the angles and the gusset plate between the angles at L12.

N/A

1 L11-U12 Downstream

Steel 2L5x3- 1/2x1/4

No additional specific defects. N/A

1 L12-L13 Downstream

Steel 2L6x6x7/16 No additional specific defects. N/A

FLOORBEAMS

Span Member Location

Type of Member Inspection Results/Comments *Photo Ref. #

1 FB1 (L1-L1) Rolled I-beam No additional specific defects. N/A

1 FB2 (L3-L3) Rolled I-beam There is a 3/4" high gap and minor section loss along the full width of the floor beam bottom flange.

1 FB3 (L5-L5) Rolled I-beam No additional specific defects. N/A

1 FB4 (L7-L7) Rolled I-beam No additional specific defects. N/A

1 FB5 (L9-L9) Rolled I-beam No additional specific defects. N/A

1 FB6 (L11-L11) Rolled I-beam No additional specific defects. N/A

1 FB7 (L13-L13) Rolled I-beam No additional specific defects. N/A

*Refer to routine bridge inspection report for photos