Somerset County, PA

400 public highway bridges

Somerset County Bridge Snapshot

Somerset County, Pennsylvania contains 400 public highway bridges in the FHWA National Bridge Inventory. Roughly 28.5% are rated “Good,” 40.8% “Fair,” 14.5% “Poor,” and 14.5% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in PA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

400
Total Bridges
28.5%
Good
14.5%
Poor
14.5%
Structurally Deficient

Condition Distribution

Good
28.5% (114)
Fair
40.8% (163)
Poor
14.5% (58)
SD
14.5% (58)

All Bridges (400)

PA 56

Fair

Over: WEAVER RUN

WINDBER BOROUGH, Somerset, PA

Built 1959 Load: 49.0 t ADT: 4,460

PA 653

Fair

Over: CSX RAILROAD

.2 MI.E.OF ROCKWOOD, Somerset, PA

Built 1999 Load: 49.0 t ADT: 649

SR 1016

Fair

Over: DARK SHADE CREEK

CAIRNBROOK, Somerset, PA

Built 1992 Load: 49.0 t ADT: 2,162

T640, REFFNER ROAD

Fair

Over: WELLS CREEK

1.2 MI.E.OF FRIEDENS, Somerset, PA

Built 1936 Load: 49.0 t ADT: 50

CAMP #3 ROAD

Fair

Over: SPRUCE RUN

1/4 MI NORTH OF SR 3029, Somerset, PA

Built 1985 Load: 49.0 t ADT: 15

PA 31

Fair

Over: LAUREL HILL CREEK

BAKERSVILLE, Somerset, PA

Built 2000 Load: 49.0 t ADT: 4,094

PA 653

Fair

Over: BUFFALO CREEK

GARRETT BOROUGH, Somerset, PA

Built 2008 Load: 49.0 t ADT: 4,267

PA 601

Fair

Over: BARCLAY RUN

SOMERSET BOROUGH, Somerset, PA

Built 1942 Load: 49.9 t ADT: 12,782

SR 3001

Fair

Over: McCLINTOCK RUN

1 MI.S.OF FORT HILL, Somerset, PA

Built 1935 Load: 49.9 t ADT: 185

US 30

Fair

Over: CSX RAILROAD

KANTNER, Somerset, PA

Built 2010 Load: 49.9 t ADT: 3,849

T539,BALTZER BR RD

Fair

Over: STONYCREEK RIVER

1 MI.S.OF SHANKSVILLE, Somerset, PA

Built 1989 Load: 50.8 t ADT: 50

SR 4006

Fair

Over: QUEMAHONING CREEK

ACOSTA, Somerset, PA

Built 1915 Load: 52.6 t ADT: 524

T733,KEAFER HILL R

Fair

Over: BENS CREEK

2.1 MI.N.OF THOMAS MILLS, Somerset, PA

Built 1900 Load: 52.6 t ADT: 150

SR 2020

Fair

Over: BRUSH CREEK

2 MI.NW.OF FAIRHOPE, Somerset, PA

Built 1962 Load: 56.2 t ADT: 87

SR 1033

Fair

Over: TRIB SEESE RUN

RUMMEL, Somerset, PA

Built 1991 Load: 59.0 t ADT: 1,747

SR 1018

Fair

Over: BEAVERDAM RUN

3 MI.E.OF CENTRAL CITY, Somerset, PA

Built 1938 Load: 60.8 t ADT: 220

SR 4027

Fair

Over: SOUTH FORK BENS CREEK

FORWARDSTOWN, Somerset, PA

Built 1938 Load: 60.8 t ADT: 181

SR 2011

Fair

Over: RAILS TO TRAILS

1 MI. SE OF DEAL(LOBSTOR), Somerset, PA

Built 2005 Load: 61.7 t ADT: 502

T860 LAUREL RUN RD

Fair

Over: TRIB. LAUREL HILL CREEK

1.7 MI.NW.OF LAVANSVILLE, Somerset, PA

Built 1934 Load: 63.5 t ADT: 62

SR 1011

Fair

Over: WELLS CREEK

LISTIE, Somerset, PA

Built 1939 Load: 64.4 t ADT: 333

PA 56

Fair

Over: RUMMEL RUN

1 MI.E.OF WINDBER, Somerset, PA

Built 1959 Load: 65.3 t ADT: 4,460

T858, BRADDOCKS RN

Fair

Over: BRADDOCKS RUN

2.5 MI.W.OF ADDISON, Somerset, PA

Built 1959 Load: 70.8 t ADT: 50

SR 3029

Fair

Over: LAUREL HILL CREEK

VILLAGE OF TRENT, Somerset, PA

Built 1963 Load: 85.3 t ADT: 1,719

SR 3006

Fair

Over: SOUTH GLADE RUN

1 MI.W.OF ROCKWOOD, Somerset, PA

Built 1961 Load: 88.9 t ADT: 255

T830 SHAFFER RUN R

Fair

Over: SHAFFERS RUN

4.6 MILE N OF FAIRHOPE, Somerset, PA

Built 1982 Load: 89.7 t ADT: 11

PA TPK (I-76)

Fair

Over: CRAB RUN

EAST OF LAUREL SUMMIT, Somerset, PA

Built 1939 Load: 89.7 t ADT: 31,991

PA TPK (I-76)

Fair

Over: GLADES CREEK

EAST OF BROTHERTON, Somerset, PA

Built 1939 Load: 89.7 t ADT: 29,452

PA TPK (I-76)

Fair

Over: TRIB. TO STONY CREEK

WEST OF ALLEGHENY TUNNEL, Somerset, PA

Built 1939 Load: 89.7 t ADT: 29,452

US 30

Good

Over: QUEMAHONING CREEK

FERRELLTON, Somerset, PA

Built 2006 Load: 20.9 t ADT: 5,205

SR 3023

Good

Over: COXES CREEK

.3 MI.N.OF BANDO, Somerset, PA

Built 1973 Load: 24.5 t ADT: 134

T-353, MOSER ROAD

Good

Over: CASSELMAN RIVER

2 MI.NE.OF SALISBURY, Somerset, PA

Built 1900 Load: 30.8 t ADT: 50

SR 4009 Husband Rd

Good

Over: PTC, B-504, MP 108.17

PTC, B-504, MP 108.17, Somerset, PA

Built 2015 Load: 32.4 t ADT: 2,470

SR 1003

Good

Over: WELLS CREEK

0.5 MILE WEST OF LISTIE, Somerset, PA

Built 2013 Load: 32.7 t ADT: 977

PA 403

Good

Over: STONYCREEK RIVER

0.29 MILE N. FROM US 30, Somerset, PA

Built 2013 Load: 32.7 t ADT: 1,033

SR 4015

Good

Over: BR QUEMAHONING CREEK

QUECREEK, Somerset, PA

Built 2016 Load: 32.7 t ADT: 350

T-858, Mt. Zion Rd

Good

Over: Kooser Run

Bakersville, Somerset, PA

Built 2017 Load: 32.7 t ADT: 50

SR 4023

Good

Over: BEAVER DAM CREEK

0.6 MI. NORTH OF SR 30, Somerset, PA

Built 2023 Load: 33.0 t ADT: 603

PA 601

Good

Over: QUEMAHONING CREEK

BOSWELL BOROUGH, Somerset, PA

Built 2012 Load: 34.0 t ADT: 2,713

T-816, Crumb Road

Good

Over: Clear Shade Creek

3 Mi. S.W. of Ogletown, Somerset, PA

Built 2014 Load: 34.0 t ADT: 25

SR 4027

Good

Over: SOUTH FORK OF BENS CREEK

.25 MI W OF FORWARDSTOWN, Somerset, PA

Built 2014 Load: 34.0 t ADT: 82

PA 160

Good

Over: LAUREL RUN

0.25 MI N OF CENTRAL CITY, Somerset, PA

Built 2010 Load: 34.5 t ADT: 2,612

SR 3019

Good

Over: WILSON CREEK

1.5 MI E OF ROCKWOOD, Somerset, PA

Built 2013 Load: 34.7 t ADT: 131

Lambertsville Rd

Good

Over: LAMBERTS RUN

0.3 MI S OF LAMBERTSVILLE, Somerset, PA

Built 2018 Load: 34.7 t ADT: 673

PA 31

Good

Over: TR.STONY CREEK

0.9 MILES WEST OF SR 160, Somerset, PA

Built 2022 Load: 34.7 t ADT: 2,353

T580 SHAFFER RUN R

Good

Over: SHAFFERS RUN

1.3 MILE N OF FAIRHOPE, Somerset, PA

Built 2011 Load: 35.3 t ADT: 11

T580 SHAFFER RUN R

Good

Over: SHAFFERS RUN

2.7 MILE N OF FAIRHOPE, Somerset, PA

Built 2011 Load: 35.3 t ADT: 11

PA 601

Good

Over: ROARING RUN

PILLTOWN, Somerset, PA

Built 2012 Load: 35.3 t ADT: 2,713

SR 1015

Good

Over: RAYSTOWN BR JUNIATA RIV

25 FEET EAST OF SR 1017, Somerset, PA

Built 2022 Load: 35.3 t ADT: 239

PA 160

Good

Over: ROARING FORK

4 M. S. OF WINDBER, Somerset, PA

Built 2008 Load: 35.4 t ADT: 3,302

SR 3001

Good

Over: CASSELMAN RIVER

FORT HILL, Somerset, PA

Built 2013 Load: 35.6 t ADT: 185

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial