Allegheny County, PA

356 public highway bridges

Allegheny County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Allegheny County, Pennsylvania contains 356 public highway bridges. Roughly 48.9% are rated “Good,” 21.3% “Fair,” and 4.5% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

356

Total Bridges

48.9%

Good

21.3%

Fair

4.5%

Poor Condition

Condition Distribution

Good

48.9% (174)

Fair

21.3% (76)

Poor

4.5% (16)

All Bridges (356)

Sort:

PA TPK (I-576)

Over: SR 60, RAMPS C, MT-B, KL

FINDLAY TWP, Allegheny, PA

Built 2006 ADT: 19,916

PA TPK (I-576)

Over: SR 376, RAMPS, RD, STRM

FINDLAY, Allegheny, PA

PA TPK (I-576)

Over: SR 0060, RAMPS, RD, STRM

FINDLAY, Allegheny, PA

Built 2006 ADT: 4,073

Hulton Rd

Over: Turnpike, B&LE RR

Beside Oakmont Golf Club, Allegheny, PA

Built 2007 ADT: 1

FRANKLIN ROAD

Over: PA TURNPIKE

500 FT N OF WARRENDALE RD, Allegheny, PA

Built 2006 ADT: 999

Rochester Road

Over: SR 0079 NB SB

NEAR I-79-I-279 JUNCTION, Allegheny, PA

Built 2007 ADT: 21,278

First Street

Over: SR 65 N-S RR

Mike Maruca Memorial Br, Allegheny, PA

Built 2007 ADT: 8,792

OLD NORTHERN PIKE

Over: SR 2048 (BUSINESS RT. 22

150'N.OF MONROEVILLE BLVD, Allegheny, PA

Built 2007 ADT: 10,975

28-279 CONNECTOR

Over: SR 279 AND MADISON AVE

NORTH SIDE, Allegheny, PA

Built 2008 ADT: 638

SR 8009 RAMP G

Over: I-79,376E&W, CAMBLS RNRD

79/376 INTERCHANGE, Allegheny, PA

Built 2008 ADT: 4,990

SR 8009 RAMP H

Over: CAMPBELL RUN RD AND RUN

79/376 INTERCHANGE, Allegheny, PA

Built 2008 ADT: 100

GIBSONIA ROAD

Over: PA TURNPIKE

OVER PA TURNPIKE, Allegheny, PA

Built 2008 ADT: 2

BL OF THE ALLIES

Over: FORBES AV, MAURICE ST

1 MILE E OF BIRMINGHAM BR, Allegheny, PA

HIGHLAND PARK APPR

Over: SR 0008

Highland Park Bridge, Allegheny, PA

Built 1940 ADT: 14,090

SR 51 North Bound

Over: SR 837, NSRR, Local Rd.

Elizabeth Bridge, Allegheny, PA

Built 1951 ADT: 9,655

PA TPK (I-576)

Over: McCASLIN RD, ENLOW RUN

FINDLAY, Allegheny, PA

PA TPK (I-576)

Over: T-439 BALD KNOB ROAD

FINDLAY TWP, Allegheny, PA

Built 2006 ADT: 130

PA PTK (I-576), WB

Over: T-439 BALD KNOB ROAD

FINDLAY TWP, Allegheny, PA

Built 2006 ADT: 200

PA TPK (I-576)

Over: MCCASLIN RUN, ENLOW RUN

FINDLAY TWP, Allegheny, PA

PA TPK (I-576)

Over: MCCASLIN RD, ENLOW RUN

FINDLAY TWP, Allegheny, PA

FOREST GROVE RD

Over: SR 0079 NB-SB

M0008 MOON RUN NO. 8, Allegheny, PA

Built 2009 ADT: 22,672

SR 19

Over: SR 60 @ SR 19 INTER

SR 19 OVER S.MAIN ST, Allegheny, PA

Built 2010 ADT: 15,042

SR 0051 SB

Over: SOUTH MAIN STREET

WEST END, Allegheny, PA

Built 2010 ADT: 15,042

GREENSBURG PIKE

Over: LINCOLN HIGHWAY

GREENSBURG PIKE O/ RT 30, Allegheny, PA

Built 2010 ADT: 9,566

PA TPK (I-76) WB

Over: SR1001, N.S., AV. R

Allegheny River, Allegheny, PA

Built 2010 ADT: 7,350

PA TPK (I-76) EB

Over: SR 1001, N.S. & A.V. RR

Allegheny River, Allegheny, PA

Built 2010 ADT: 7,350

KELSO ROAD

Over: SR 22 EB WB

SR 3051 OVER SR 22, Allegheny, PA

Built 2011 ADT: 10,781

MONTOUR CHURCH RD

Over: SR 22

TWP RD 430 OVER SR 22, Allegheny, PA

Built 2011 ADT: 11,043

INTERSTATE 376

Over: BUSINESS RT. 22

NEAR TURNPIKE INT., Allegheny, PA

Built 2011 ADT: 15,041

PA TPK (I-76)

Over: SR 4063, LR 02141

West of Gibsonia, Allegheny, PA

Built 2012 ADT: 4,698

PA TPK (I-76)

Over: SR 4068

East of Warrendale, Allegheny, PA

Built 2012 ADT: 10,514

LINCOLN HIGHWAY

Over: ELECTRIC AVE.

.5 MI.W. WESTINGHOUSE BR., Allegheny, PA

Built 2012 ADT: 2,743

Fancourt Street

Over: Tenth St. Bypass

143 10th St Bypass off Ft, Allegheny, PA

Built 2012 ADT: 10,783

LINCOLN HIGHWAY

Over: SR 2112 ELECTRIC AVE

.5 MI.W.WESTINGHOUSE BR., Allegheny, PA

Built 2013 ADT: 2,743

ECONOMY GRADE ROAD

Over: SR 0376 EB WB

1 MI S Beaver Co. Line, Allegheny, PA

Built 2016 ADT: 16,343

Flaugherty Run Rd.

Over: SR 3160 - Business 376

1 Mi North of Old Airport, Allegheny, PA

Built 2017 ADT: 3,921

Greenfield Ave

Over: I-376 Parkway East

039 Greenfield Bridge, Allegheny, PA

Built 2017 ADT: 42,691

SHALER STREET

Over: SR 19

1/4 MI NW OF I-376, Allegheny, PA

Built 2019 ADT: 13,157

I-376 EB

Over: MON RIVER & WARF, 376 WB

Fort Pitt Bridge, Allegheny, PA

Built 1953 ADT: 52,977

PA TPK (I-76)

Over: SR 0019, US19

WEST OF WARRENDALE, Allegheny, PA

Built 2021 ADT: 11,011

Grant Ave Ext

Over: Thompson Run

At Int. Lwr Bull Run Rd, Allegheny, PA

Built 1985 Load: 19.1 t ADT: 750

Beagle Drive

Over: Alsip Run

217 FT W of SR0088, Allegheny, PA

Built 1970 Load: 19.1 t ADT: 200

Community Center D

Over: W. Branch of Deer Creek

50' S of Int w/ SR910, Allegheny, PA

Built 2004 Load: 19.1 t ADT: 1,000

FORT DUQ BR (LOW)

Over: FT DUQ BRDG NB, ALLEGH R

Fort Duquesne Bridge, Allegheny, PA

Built 1959 Load: 20.9 t ADT: 18,158

SR 65

Over: ABANDONED ROADWAY

North of McKees Rocks Brg, Allegheny, PA

Built 1930 Load: 22.7 t ADT: 28,590

ROCKWOOD DR

Over: SYCAMORE RUN

432005 ROCKWOOD ESTATE BR, Allegheny, PA

Built 1961 Load: 22.7 t ADT: 150

SR 8082 SB

Over: N/A

Highland Park Bridge, Allegheny, PA

Built 1940 Load: 25.4 t ADT: 3,973

SR 8082

Over: N/A

Highland Park Bridge, Allegheny, PA

Built 1940 Load: 25.4 t ADT: 23,641

WALTON ROAD

Over: LOBBS RUN

1050' N.W. OF SR 0837, Allegheny, PA

Built 1962 Load: 26.3 t ADT: 567

NOBLESTOWN RD

Over: OHIO C.,SR3117,ROBINSON

1/2 MI W OF US 0079, Allegheny, PA

Built 1972 Load: 26.3 t ADT: 2,837

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

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Compiled by PlainBridges, Independent data publisher

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.