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)

Blazier Drive #3

Fair

Over: Pine Creek

Blazier 3 over Pine Creek, Allegheny, PA

Built 2010 Load: 48.1 t ADT: 1,500

Lyndhurst Circuit

Fair

Over: Unnamed Tributary

340' N of Wexford RdSR910, Allegheny, PA

Built 1988 Load: 49.0 t ADT: 50

WEST FIFTH AVENUE

Fair

Over: NONE - PARALLEL TO CSX

Ramp-MA12 Homestead Br, Allegheny, PA

Built 1997 Load: 49.9 t ADT: 7,000

SR 885

Fair

Over: BLUFF

Blvd of The Allies Bluffs, Allegheny, PA

Built 2007 Load: 49.9 t ADT: 28,222

CLINTON FRANKFORT

Fair

Over: BR. RACCOON RUN

1 MI. S.W. OF SR 0030, Allegheny, PA

Built 2022 Load: 49.9 t ADT: 1,611

HOT METAL STREET

Fair

Over: MON RIVER & PRIVATE RR

145 Hot Metal Bridge, Allegheny, PA

Built 1904 Load: 50.8 t ADT: 17,500

PARKWAY EAST

Fair

Over: SQ HILL TN VULT

UNDER W POTAL/SQ HILL TN, Allegheny, PA

Built 1955 Load: 50.8 t ADT: 75,287

NORTH SHORE DRIVE

Fair

Over: PEDESTRIAN UNDER PASS

148 North Shore Dr Bridge, Allegheny, PA

Built 2001 Load: 57.2 t ADT: 10,000

SR 51 S.B.

Fair

Over: NSSR, Local Rd.

Elizabeth Bridge, Allegheny, PA

Built 1951 Load: 58.1 t ADT: 13,696

Blazier Drive #2

Fair

Over: Pine Creek

BLAZIER 2 OVER PINE CREEK, Allegheny, PA

Built 2012 Load: 62.6 t ADT: 500

HOMSTEAD-DUQ RD

Fair

Over: HOMEVILLE CREEK

HV06 HOMEVILLE CR #6, Allegheny, PA

Built 1997 Load: 63.5 t ADT: 4,975

Osborne Street

Fair

Over: Crooked Run

S. of Westghse Ave/SR 148, Allegheny, PA

Built 1940 Load: 66.2 t ADT: 200

OLD CLAIRTON ROAD

Fair

Over: LEWIS RUN BESIDE 51 SB

INTER W/ OLD CLAIRTON RD, Allegheny, PA

Built 1999 Load: 78.9 t ADT: 10,539

DUNCAN AVENUE

Fair

Over: PINE CREEK

PI0202 PINE CREEK #2, Allegheny, PA

Built 2000 Load: 79.8 t ADT: 9,100

GREENSPRING AVE

Fair

Over: BR HOMESTEAD RUN

HV0805 HOMEVILLE CRK #8, Allegheny, PA

Built 1997 Load: 83.5 t ADT: 5,860

RAYMOND SHAFER HWY

Fair

Over: MOON RUN

I-79 SB1.4 MI N OF SR 60, Allegheny, PA

Built 1973 Load: 99.8 t ADT: 22,032

PANGBURN HOLLOW RD

Good

Over: PERRY MILL RUN

PG09 PANGBURN HOLLOW RD#9, Allegheny, PA

Built 2000 Load: 20.9 t ADT: 678

PANGBURN HOLLOW RD

Good

Over: PERRY MILL RUN

PG07 PANGBURN HOLLOW RD#7, Allegheny, PA

Built 2000 Load: 22.7 t ADT: 678

S Fayette Way

Good

Over: SR 576 Southern Beltway

MP 15.28 on Rt. 576, Allegheny, PA

Built 2019 Load: 30.1 t ADT: 290

PA TPK (I-76)

Good

Over: Deer Creek

W of Allegheny Val Int., Allegheny, PA

Built 2016 Load: 32.4 t ADT: 33,531

MILLER'S RUN RD

Good

Over: MILLER'S RUN

400' NORTHWEST OF SR 0050, Allegheny, PA

Built 2000 Load: 32.7 t ADT: 5,384

PA TPK (I-76)

Good

Over: N FORK PINE CREEK

WEST OF GIBSONIA, Allegheny, PA

Built 1952 Load: 32.7 t ADT: 30,022

SR 0051 NB SB

Good

Over: LEWIS RUN

LEWIS RUN, Allegheny, PA

Built 1999 Load: 32.7 t ADT: 23,832

Mosside Blvd Rt 48

Good

Over: Access Rd

0.1mi NE OF WALL AVE, Allegheny, PA

Built 2006 Load: 32.7 t ADT: 16,042

HARTS RUN ROAD

Good

Over: BR HARTS RUN

2000FT EAST OF SR 0008, Allegheny, PA

Built 2009 Load: 32.7 t ADT: 6,319

THOMPSON RUN RD

Good

Over: PINE CREEK SOUTH

PS01 PINE CREEK, SOUTH BR, Allegheny, PA

Built 2012 Load: 32.7 t ADT: 16,520

Malabar Drive

Good

Over: Abers Creek

200' W Pine Valley Dr, Allegheny, PA

Built 1995 Load: 32.7 t ADT: 250

SR 1013

Good

Over: PA TPK (I-76)

Near Dorseyville, Allegheny, PA

Built 2015 Load: 33.0 t ADT: 4,773

SR 4070

Good

Over: PA TPK (I-76)

East of Butler Valley Int, Allegheny, PA

Built 2013 Load: 33.4 t ADT: 4,546

GUYS RUN RD

Good

Over: GUYS RUN

1/2 MI. N. of SR 28, Allegheny, PA

Built 2016 Load: 33.4 t ADT: 3,661

MORROW RD (SR3008)

Good

Over: MCLAUGHLIN RUN

200'W.OF INTER.W/SR 3004, Allegheny, PA

Built 2017 Load: 33.4 t ADT: 2,862

Brownsville Rd Ext

Good

Over: Piney Fork

South Park, Allegheny, PA

Built 2008 Load: 33.6 t ADT: 5,069

PANGBURN HOLLOW RD

Good

Over: PERRY MILL RUN

PG05 PANGBURN HOLLOW #5, Allegheny, PA

Built 2012 Load: 33.7 t ADT: 633

PA TPK (I-76)

Good

Over: Deer Creek

W. of Allegheny Val. int., Allegheny, PA

Built 2016 Load: 33.7 t ADT: 33,531

FREEPORT RD

Good

Over: BAILEY RUN

NEAR BAILEY RUN ROAD, Allegheny, PA

Built 2019 Load: 33.7 t ADT: 9,142

GIBSONIA RD

Good

Over: W. BRANCH OF DEER CREEK

1 MILE EAST OF RT 8 INT, Allegheny, PA

Built 2018 Load: 34.3 t ADT: 9,313

Freeport Road

Good

Over: Squaw Run

1/2 mi. S of SR 1002, Allegheny, PA

Built 2018 Load: 34.3 t ADT: 10,555

Wetzel Road

Good

Over: Little Pine Creek

250'W.OF SR 4006, Allegheny, PA

Built 2020 Load: 34.3 t ADT: 4,805

COULTERVILLE RD

Good

Over: Long Run

LG03 LONG RUN NO. 3, Allegheny, PA

Built 2022 Load: 34.3 t ADT: 9,886

SHERIDAN STREET

Good

Over: GIRTYS RUN

445011 SHERIDAN STREET, Allegheny, PA

Built 1998 Load: 34.5 t ADT: 500

Library Road

Good

Over: Piney Fork Creek

50' South of SR 3004, Allegheny, PA

Built 2020 Load: 34.7 t ADT: 13,254

Russellton-Dorsey

Good

Over: Cunningham Run

15' E of Int. w/ SR 1013, Allegheny, PA

Built 2017 Load: 34.7 t ADT: 1,525

NOBLESTOWN ROAD

Good

Over: BRANCH ROBINSON RUN

1 MI.N.E./WASH.CO.LINE, Allegheny, PA

Built 2019 Load: 34.7 t ADT: 3,098

MCLAUGHLIN RUN RD

Good

Over: MCLAUGHLIN RUN

1/2 MI. S.E. OF SR 50, Allegheny, PA

Built 2011 Load: 35.0 t ADT: 5,590

Library Road

Good

Over: Br. Piney Fork Creek

200' North of SR 3004, Allegheny, PA

Built 2021 Load: 35.0 t ADT: 10,129

PA TPK 0576

Good

Over: SR 50, Millers Road

South Fayette Twp, Allegheny, PA

Built 2017 Load: 35.3 t ADT: 10,538

PA TPK 0576

Good

Over: SR 50, Millers Road

South Fayette Twp, Allegheny, PA

Built 2017 Load: 35.3 t ADT: 10,538

MYERS DRIVE

Good

Over: PUCKETA CREEK

250'NORTH OF SR 0366, Allegheny, PA

Built 2005 Load: 35.4 t ADT: 1,407

STREETS RUN ROAD

Good

Over: STREETS RUN

50'NORTH/BRENTWOOD RD., Allegheny, PA

Built 2015 Load: 35.6 t ADT: 9,788

Thompson Run Road

Good

Over: Thompson Run

2656' N.E. OF SR 2053, Allegheny, PA

Built 2016 Load: 35.6 t ADT: 884

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

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.