UMA 2023 Thomas Creek 3200000_4.3120.pdf
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This is a bridge inspection report dated August 21, 2023, for the Thomas Creek Bridge (Structure No. 061406000001011) located in the Umatilla National Forest at milepost 4.3120 on Route 3200000 in Umatilla County, Oregon.
The report details a routine inspection of a timber bridge built in 1958, consisting of 3 main spans with glulam girders, naillam cantilever deck, and concrete piers. The bridge is rated in fair condition with several issues noted: exposed pier footings (though not undermined), fill sloughing at both end walls, and checking in all girders. The bridge has a roadway width of 14.0 feet, deck width of 15.80 feet, and total length of 48.5 feet. Recommended work items include routine bridge inspection every 2 years, replacing/repairing steel running planks (40 SF), brush removal around approaches, upgrading railing to MASH standard curbs (97 LF), adding riprap to stabilize footing scour (20 CY), and replacing missing bridge name sign. The structure's current load rating allows for HS20-44 loading at 48 tons operating capacity, with no posting restrictions required.
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Inspection Date: 08/21/2023
Route: 3200000 Milepost: 4.3120 Structure No:
OVER
County, (Signature)
BRIDGE INSPECTION AND MANAGEMENT PROGRAM
Structure Name: Date: 1/0/1900
INSPECTION TEAM LEADER: James Carnahan
U.S. DEPARTMENT OF AGRICULTURE
THOMAS CREEK
UMATILLA NATIONAL FOREST
USDA FOREST SERVICE, REGION 6
061406000001011
ROAD BRIDGE INSPECTION REPORT
INSPECTION TYPE: ROUTINE
Umatilla Oregon
THOMAS CREEK THOMAS CREEK
Route: / Milepost: Structure No.: 0
Compass (direction approximate)
Bearing: 39 deg.
(Plan-view, No Scale)
ORIENTATION:
Components lateral to flow are counted from Left-to-Right; when viewed from Upstream, looking Downstream … such as: Abutments, Piers, Floor-beams Components in line with flow are counted from Upstream-to-Downstream; when following the flow direction … such as: Girders, Abutment Posts, Pier Columns See also Compass-rose for additional orientation; "N" positioned to approximate north orientation along Span in plan-view … Compass-Bearing, if provided, shows approximate alignment sighting from CL-Abut1 to CL-Abut2
TERMS AND ABBREVIATIONS
A, or, ABUT: Abutment Suffix with ## numbering sequence per reference above
AL, or, ALUM: Aluminum APPR: Approach roadway Suffix with ## numbering sequence per reference above
C, or, COL: Column Suffix with ## numbering sequence per reference above CL: Centerline, centerline of roadway alignment or center axis along member-shape
D, or, DIA: Diaphragm Suffix with ## numbering sequence per reference above DS: Downstream
EMB: Embankment F, or FT: Footer
G, or, GR: Girder Suffix with ## numbering sequence per reference above GL: Glued-laminated
P, or, AP: Abutment Post Suffix with ## numbering sequence per reference above P, or, PI: Pile Suffix with ## numbering sequence per reference above
RP: Rail Post Suffix with ## numbering sequence per reference above US: Upstream
R: Rock, substantial natural outcrop among otherwise small bedform material RAP: Riprap, imported and shaped bank armoring
S: S-shape, steel member with applicable description SB: Scupper Block Suffix with ## numbering sequence per reference above TH: Thalweg, lowest point of streambed channel TIE: Tie-rod, post tensioning rod joining members with prescribed stress-level
W: W-shape, steel member with applicable description WW: Wing-Wall, angled section of abutment extending beyond shoulder for embankment retention
BRIDGE ORIENTATION AND REPORT ABBREVIATIONS
US A1 WW US A2 WW
DS A2 WWDS A1 WW
APPR 1 APPR 2
RP1 RP2
G 1
G 2 P2
P1
A B
U T
1 A B
U T
P
IE
R
P
IE
R
N
Structure Name: (8)Structure No:
(5D)Route:
Forest:
48.5 14.0 99.9
(45)No. Main Spans: 3
(46)No. Appr Spans: 0
No. Substrs: 2
Rating Date:
(41) Posting Status:
(70) Posting Capacity:
(31)Design Load: Yes/No Due (63,65)Method of Load Rating: Freq. Date Current Posting Signs Yes No N Are weight limit signs required at each end? X N
Correct Signage? N
Yes No Special Inspection Equipment Needed:
Type 3 Type 3S2 Type 3-3
X
Date:
Inspection Team: Leader: Jurisdiction:
Weather: Latitude:
(9)Location: Str. Life Remaining
Inspection Done By: Inspection Done By Name:
Critical Findings:
Narrative Report: (Add additional sheets if necessary)
Misc. INFRA Data
State OREGON
County UMATILLA
ADT 46
(34)Skew:
Substr Type:
(44B)Superstr Type:
Specialized Inspections Required
(23 CFR 650.303)
Correct Requirements?
Description:
From Pendleton, E on Cnty Rd 900, S on FSR 32.
Re-rating required ?
FS - Forest Service Region 6 - Pacific Northwest Region
Inspection Template Revision Date: 06/15/2023
Recommended Inspection Frequency:
James Carnahan 45.68426093
THOMAS CREEK
Infra data used for this report was pulled on: 05/15/2023
2:30 PM
(92A) Fracture Critical (92B) Underwater (92C) Special
H20‐44
ALLOWABLE STRESS REPORTED AS TONS
Time Completed:08/21/2023 Time Started:
INSPECTION INFORMATION
James Carnahan Longitude: -118.20265890
FS
Fair condition. Pre-1970 glulam and pending RO review of new load rating. Splits/checks in girders apear to be seasoning or manufacturing. Warrant for curbs only. No stream profile because had to hike to bridge. See Narrative.
Verified
9/4/1989
(102) Direction of Traffic
Substr Material:
USDA FOREST SERVICE, REGION 6
(11)Milepost: 4.3120
BRIDGE IDENTIFICATION AND LOCATION
061406000001011
UMATILLA NATIONAL FOREST
(32)Approach Roadway Width:
(48)Max Span:
(52)Deck Width out-out: 15.80
WG12; glulam girders, naillam cantilever deck, conc piers.
(51)Roadway Width (Curb to Curb):
Security ID 0614WALLA WALLA
3200000
24.00
BRIDGE DESCRIPTION and MEASUREMENTS
Umatilla National Forest District:
33.60 (27)Year Built:
(6)Feature Crossed:
THOMAS CREEK
2:50 PM
Light rain, warm.
Months Inspection Cost
(49)Overall Br Length: 45.00
Steel Running Plank
NBIS Bridge Opening:
99.99 30 inger/Multi-Beam Or Gird
(53)Vertical(47)Horizontal 1 LANE BRIDGE, 2-WAY TRAFFIC (28A) Lanes on the Structure 1
Column Pier
Open, No Restriction
At Or Above Legal Loads
SPECIALIZED INSPECTIONS:
(43B)Superstr Type:
BRIDGE RATING SUMMARY:
Timber - Treated (108A) Wearing
Surface:
(107)Deck StructureType:
(43A)Superstr Material:
(44A)Appr. Superstr Mat'l:
Timber, Glulam, Treated
Concrete, Reinforced
Structure Name: (8)Structure No:
(5D)Route:
Forest:
Development Status: Date:
DATA Safe
Vehicle Type Date Oper. Load
HL-93
HS20-44 8/7/89 2 - ALLOWABLE STRESS REPORTED AS TONS 48.00
Type 3 9/4/89 2 - ALLOWABLE STRESS REPORTED AS TONS 42.00 Type 3S2 8/7/89 2 - ALLOWABLE STRESS REPORTED AS TONS 60.00 Type 3-3 8/7/89 2 - ALLOWABLE STRESS REPORTED AS TONS 78.00
NRL
SU4
SU5
SU6
SU7
EV2
EV3
Permit 1
Permit 2
Permit 3
Permit 4
User Defined 1
User Defined 2
User Defined 3
User Defined 4
Special
Alt. Interstate
H Loading
Railroad
Uniform
Gross Load Only
Gross Load
Inv.
Safe
Posting
32.00
36.00
THOMAS CREEK 061406000001011
3200000 (11)Milepost: 4.3120
Method
45.00
59.00
Umatilla National Forest District: WALLA WALLA Security ID 0614 EXISTING - ACTIVE Jurisdiction: FS - FOREST SERVICE 8/21/2023
THOMAS CREEK(6)Feature Crossed:
LOAD RATING DATA
UMATILLA NATIONAL FOREST
BRIDGE IDENTIFICATION AND LOCATION
Structure Name: THOMAS CREEK Date: 8/21/2023 Route: 3200000 / Milepost: 4.312 Structure No.: 061406000001011
CODE
Fair
1. Good AC 50' each end.
2. Fair Needs brushing and tree removal.
3. Fair Fill sloughing from both EOB wingwalls.
4. Good
5 1/4" X 36" steel boilerplate each wheel track, wear rut next to plate near BOB.
* 1. Good 1 7/8" X 7 1/2" act naillam, wear rut next to plate from turn radius at BOB.
C1. N/A C2. Good 11"w X 14.5"h w/ 4X4 blocks, collision damage BOB D/S.
C3. N/A C4. Good Under curbs, 1.2% longitudinal grade.
C5. N/A Road closed, hiked to bridge.
C6. Fair Fir needles and gravel along edges.
C7. N/A C0 Deck OTHER N/A
* 1. 3 Girder Fair 11" X 25" glulam, checking in all girders.
a. Girder Diaphragms Good Framed X-brace, 4 each side, equally spaced.
b. Girder Bracing N/A
* 2. N/A
* 3. N/A
* 4. N/A
a. Trusses Bracing N/A
b. Trusses Chord N/A
c. Trusses Portal N/A
d. Trusses Vertical/Diagonal N/A
C1. Good Steel shoes.
C2. Poor Mostly flaked off railing, from age probably lead based.
C3. N/A Not observed.
C4. N/A Not observed.
C0 Superstructure OTHER N/A
4 2 concrete columns with cap, no breast wall.
*1. N/A *2. N/A *3. N/A *4. N/A *5. N/A *6. Fair i.e. end walls on girders. Fill sloughing both sides EOB.
*7. N/A *8. N/A *9. N/A *10. N/A *11. Good *12. Poor BOB footings exposed for 8"-10" depth but no undermining.
*13. Good *14. Good Steel plate in each cap.
*15. N/A *16. Good *17. Poor BOB footings exposed for 8"-10" depth but no undermining.
*18. N/A
C0 Substructure OTHER N/A
1 Also includes wingwalls connected to the superstructure above the beam seat.
2 Includes wingwalls integral with the abutment or the portion of the wingwall below the bearing seat.
Vibration Under Load
Abutments Weep Holes
A B
U T
M E
N T
S
Abutments Footings/Sills
Abutments Wing Walls
Abutments Alignments
Abutments Bearing Seats
Abutments Settlement
Piers Bearing Seats
Piers Erosion or Scour
Piers Piles and Bracing
Piers Columns or Walls Piers Footings
P
IE
R S
Piers Settlement
Piers Alignment (Tiping, Tilting)
* Only items with asterisk are used in the determination of the overall condition rating for that category, e.g. 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.
Floor Beam
60. SUBSTRUCTURE:
Piers Caps
Abutments Caps
Abutments Backwalls
59. SUPERSTRUCTURE:
Sidewalks Drains and Drainage Rideability Cleanliness Utilities
Deck Joints Curbs
Stringer
Abutments Erosion or Scour
Abutments Piles/Bracing
Bearing Devices Paint
Trusses
Deflection Under Load
Wearing Surfaces
Deck Slab/Panels/Joists
(Overall Code for item, to be reported to
58. DECK:
APPROACH CONDITION:
Surfacing Shoulder Embankment Roadway Embankment Approach Settlememt
REMARKS
CONDITION CODES and REMARKS
Structure Name: THOMAS CREEK Date: 8/21/2023 Route: 3200000 / Milepost: 4.312 Structure No.: 061406000001011
CODE(Overall Code for item, to be reported to REMARKS CONDITION CODES and REMARKS
1. Good Scour at bridge but channel OK.
2. Good Natural only.
3. Good Heavy brush, trees.
4. Good
5. Good
6. Good 7.7'.
C0 Channel OTHER N/A
N/A *1. Shape N/A *2. N/A *3. N/A *4. N/A
5. N/A C0 Culvert OTHER N/A
36. TRAFFIC SAFETY FEATURES:
36A. 0 Warrant for curb only but wood and not MASH std. Railing may remain until curb replaced.
36B. 0 36C. 0 With bridge rail, need approach railing.
36D. 0
1.
Fair
Never had a stream name sign since I've been inspecting.
2. Fair Type-3 each corner, new 2017 at correct ht., now with a few bullet holes.
72. APPROACH ROADWAY ALIGNMENT: 6
1. 6 In S curve.
2. 8 On grade, 1.2% longitudinal grade.
29. ROAD ADT 46
67. STRUCTURAL EVALUATION 4
68. DECK GEOMETRY: 6 Clear width 14.0', one lane, ADT 0-100.
69. UNDERCLEARANCE: N
71. WATERWAY ADEQUACY: 8
113. SCOUR CRITICAL BRIDGES: 4
Other potential Critical Findings? Describe on Critical Findings Tab
Abutment and Pier Types:
Load Rating Sketches
Channel Scour/Erosion Channel Protection Vegetation Waterway Obstruction/Drift
61. CHANNEL and CHANNEL PROTECTION:
APPRAISAL CODES and REMARKS CONDITION of Elements
A P
P R
A
IS
A L o f e le m e n ts
Vertical
Seams or Joints Material Condition Foundations Headwall/Wingwall
Observed Lateral Movement Clear Height
62. CULVERTS
Bridge Railing
Rail Transitions Approach Guardrails
Approach Rail Ends
Signing
Object Markers
Horizontal
* Only items with asterisk are used in the determination of the overall condition rating for that category, e.g. 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.
Yes Wall Type Abutment Spill Through Pier(s)
Timber Steel Concrete
Show SI&A Sheet
Milepost: 4.3120 Structure No.:
Work Item Category
Detailed Work Item Description C.F.
Related
Inspection Routine bridge inspection every 2 years
Wearing Surface
Clean debris from under running plate and re-bolt down. Also repair entrance and exit plates where necessary.
Approach Condition
Remove all trees encroaching bridge & approach
Traffic Safety Features
Replace curb and railing with MASH standard curb, will probably require new deck.
Substructure Place riprap to stabilize footing scour.
Traffic Safety Features
Replace missing bridge name sign.
Date:THOMAS CREEK
Route:
Structure Name:
061406000001011
08/21/2023
UnitWork Item Quantity
3200000
RECOMMENDED WORK ITEMS
7001001
8001001
5003005
Work Item Code
9001002
8003002
Replace/Repair Steel Running Planks
General / Brush Approaches 1
SF
LS/B
LSRoutine Bridge Inspection / Routine
Concrete Abutments/Piers / Add/Repair Riprap
LF
CY
Bridge Railing / Upgrade Railing to Curbs Only
1EA
Signing / Repair/Replace Approach
Signs
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Date:
3200000 Milepost: 4.3120 Structure No:
Item Reference
2023;
THOMAS CREEKStructure Name:
Route:
08/21/2023
061406000001011
BOB pier footing exposed but not undermined, probably from 2020 high flows that washed out road. Riprap protection needs to be added.
EOB endwalls have fill sloughing at both ends.
ITEM REFERENCE AND REMARKS ~ NARRATIVE REPORT
Remarks
Road closed at SF Umatilla #2 and there are serveral road washouts between #2 and #3 so hiked to SF Umatilla #2 and Thomas Creek for inspections. No stream profile because didn't want to carry rod and too breezy for tape.
Route: Milepost: Structure No:
Structure Name: THOMAS CREEK 08/21/2023
3200000 4.3120 061406000001011
BRIDGE PHOTOS
Near Approach, looking ahead, needs brushing but road closed, I did some.
Far Approach, looking back
Structure Name: THOMAS CREEK 08/21/2023
3200000 4.3120 061406000001011
BRIDGE PHOTOS
Structure Topside View, some wear between running plates.
Structure Underside View
Structure Name: THOMAS CREEK 08/21/2023
3200000 4.3120 061406000001011
BRIDGE PHOTOS
Upstream Elevation View
Downstream Elevation View
BRIDGE PHOTOS
Near Pier Elevation, stream flow from "left", footings exposed but not undermined, need riprap protection.
Far Abutment Elevation, stream flow from "right"
Structure Name: THOMAS CREEK 08/21/2023 3200000 4.3120 061406000001011
Structure Name: THOMAS CREEK 08/21/2023
3200000 4.3120 061406000001011
BRIDGE PHOTOS
Stream View from Structure, looking upstream
Stream View from Structure, looking downstream
Structure Name: THOMAS CREEK 08/21/2023
3200000 4.3120 061406000001011
BRIDGE PHOTOS
Sloughing at EOB U/S corner, D/S similar. Material is sliding under the wingwall.
Closeup of exposed BOB footings. I probed to check for undermining but found none.
Structure Name: THOMAS CREEK 08/21/2023
3200000 4.3120 061406000001011
BRIDGE PHOTOS
Missing bolt/loose plate.
BOB D/S corner is held by large rocks but in dange of failure and sloughing.
Structure Name: Date:
Route: Milepost: 4.3120
7.7
2019 2021 2023 2025 2027 2029 2031
2.0 6.1
8.0 11.4
14.0 11.3
20.0 11.3
26.0 11.3
32.0 11.4
38.0 10.6
44.0 7
Water Surface 11.2
Distance Measured from Upstream Side
Channel Cross Section
Horizontal Dist Measured from A-1
08/21/2023
Structure No: 061406000001011
THOMAS CREEK
Input Cross-Section Data:
Height (feet) from thalweg to bottom of lowest superstructure member
3200000
Horizontal Dist.
Location Notes
Top of Rail
0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0
Top of Rail
(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) N Specialized Equipment Required? (Enter Y/N)
Insp Remarks
Fair condition. Pre-1970 glulam and pending RO review of new load rating. Splits/checks in girders apear to be seasoning or manufacturing. Warrant for curbs only. No stream profile because had to hike to bridge. See Narrative.
Approach Rail Ends (36D) 0
James Carnahan James Carnahan
Insp Team
Transition (36B) 0 Approach Guardrail (36C) 0
Traffic Rail Safety Features Appraisal Bridge Rail (36A) 0
Approach Align (72) 6
Underclr (69) N Waterway Adq (71) 8
Str Eval (67) 4 Deck Geom (68) 6
Main Data Appraisal Data
Done By Name (Unit) Region 6 - Pacific Northwest Region
Inspected By* James Carnahan Done By (Org) FS - Forest Service
Scour Crit Br (113) 4 Insp Resp Name FS - FOREST SERVICE
Culvert Cond (62) N/A Channel Cond (61) 7
Supstr Cond (59) 5 Substr Cond (60) 4
Wear Srfc Cond 5 Deck Cond (58) 6
Inspection Cost $0.00 Aprch Cond Fair
Main Data Appraisal Data
Insp Team Leader
Inspection_Type (System Generated) (System Generated) Inspection Date 08/21/2023 ROUTINE Inspection Freq 24
Infra Summary Data
Structure Name: THOMAS CREEK 8/21/2023
Route: 3200000 4.3120 Structure No: 061406000001011
Structure Name: Date: 8/21/2023 Route: Milepost: 061406000001011
Intermediate Piers Not on Piles or Bedrock Codings
Scour Scenarios Scour Critical Code Yes No Yes No Yes No Yes No High Low Yes No
X X X X X X Ideal field conditions. No active scour or stream stability issues 5
Footing Exposed Only 4
Footing Exposed Plus Constriction, Unstable, Attacking, debris potential 2
Bridge Constricts Channel > 10% 5
Bridge Constricts Channel > 10% plus Unstable, Attacking alignment, debris potential (evaluate severity, substrate) 4 or 2
Bridge on Unstable Channel 5
Bridge on Unstable Channel with attacking alignment or debris potential (evaluate severity) 4 or 2
Designed countermeasures installed, stable and performing well. 7
Severe scour, abutment failing 1 or 0
None of the above, Needs further review 6
THOMAS CREEK
3200000 Structure No:
Scour Critical Coding, Item 113 Field Evaluation Guide
Parameters no no no no low no
Is Footing Exposed?
Is Channel Constriction greater than 10%?
Is Stream Laterally or Vertically Unstable?
Is Flow Alignment Attacking? Debris Potential Other factors
4.3120 yes no no no low no no no no yes no low no yes no yes no no low no no yes Fill in
Fill in
Fill In
Fill In no yes Fill in yes (undermined) Fill in no
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