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)

Lardington Road

Good

Over: Lardington Run

1/2 mi. NW of SR1028, Allegheny, PA

Built 2017 Load: 35.6 t ADT: 241

GUYS RUN RD

Good

Over: Guys Run

1028'N.OF FREEPORT RD., Allegheny, PA

Built 2017 Load: 35.6 t ADT: 3,661

WALTON RD

Good

Over: LOBBS RUN

100' SOUTHEAST OF SR 3018, Allegheny, PA

Built 2017 Load: 35.6 t ADT: 567

WILLIAM FLYNN HWY

Good

Over: WEST BRANCH DEER CREEK

@ INTERSECTION W/SR 0910, Allegheny, PA

Built 2018 Load: 35.6 t ADT: 33,174

STOTLER RD

Good

Over: PLUM CREEK

PM06 - PLUM CREEK NO. 6, Allegheny, PA

Built 2021 Load: 35.6 t ADT: 53

MCKRELL RD

Good

Over: LITTLE DEER CREEK

DL06 LIT DEER CRK NO 6, Allegheny, PA

Built 2011 Load: 36.0 t ADT: 2,036

Carrie Furnace Con

Good

Over: CSX RR

FO05 Carrie Furnace Conn., Allegheny, PA

Built 2015 Load: 36.3 t ADT: 2,000

VILSACK RD

Good

Over: S BRANCH PINE CREEK

PS06 PINE CR, So. BR., #6, Allegheny, PA

Built 2022 Load: 36.3 t ADT: 12,274

Hulton Bridge

Good

Over: N&S RR, ALLEGHENY RIVER

Hulton Bridge, Allegheny, PA

Built 2015 Load: 36.6 t ADT: 22,668

Center Ave.

Good

Over: Fallen Timber Run

500' East of SR 51, Allegheny, PA

Built 2020 Load: 36.6 t ADT: 10,527

PINEY FORK RD

Good

Over: CATFISH RUN

@ S.PARK SEWAGE PLANT, Allegheny, PA

Built 2018 Load: 36.6 t ADT: 4,250

Braddock Avenue

Good

Over: Norfolk Southern RR

NS01 KENMAWR BRIDGE, Allegheny, PA

Built 2021 Load: 36.6 t ADT: 15,000

JACOBY ROAD

Good

Over: LITTLE DEER CREEK

DL05 LIT DEER CRK NO. 5, Allegheny, PA

Built 2020 Load: 36.6 t ADT: 484

T-662

Good

Over: PA TPK (I-76)

West of Allegheny Val Int, Allegheny, PA

Built 2013 Load: 36.9 t ADT: 200

SR 400, LR228

Good

Over: PA Turnpike - I-76

Milepost 53.66, Allegheny, PA

Built 2018 Load: 36.9 t ADT: 7,708

CLIFF MINE RD

Good

Over: MONTOUR RUN

MT14 MONTOUR RUN #14, Allegheny, PA

Built 1998 Load: 37.2 t ADT: 7,310

SR 51

Good

Over: FALLEN TIMBER RUN

750' NW WEIGEL HILL RD, Allegheny, PA

Built 2009 Load: 37.2 t ADT: 22,891

COURSIN STREET

Good

Over: CSX & UNION RR

FO03 MCKEESPORT FLYOVER, Allegheny, PA

Built 2011 Load: 37.3 t ADT: 500

HULTON RD

Good

Over: PLUM CREEK

HULTON RD, Allegheny, PA

Built 2012 Load: 37.3 t ADT: 7,447

Unity Center Road

Good

Over: PA TPK (I-76)

NEAR PENN HILLS, Allegheny, PA

Built 2019 Load: 37.3 t ADT: 4,396

PANGBURN HOLLOW RD

Good

Over: PERRYMILL RUN

PG04 PANGBURN HOLLOW #4, Allegheny, PA

Built 2012 Load: 37.6 t ADT: 633

SR 0910

Good

Over: PA TPK (I-76)

Indiana Township, Allegheny, PA

Built 2016 Load: 37.6 t ADT: 6,816

PA TPK (I-76)

Good

Over: T-574

West of Gibsonia, Allegheny, PA

Built 2012 Load: 37.9 t ADT: 27,341

FORBES AVENUE

Good

Over: FERN HOLLOW CREEK

301033 NEAR S BRADDOCK AV, Allegheny, PA

Built 2022 Load: 37.9 t ADT: 15,000

LIBRARY RD

Good

Over: SAW MILL RUN

300'N.E. OF MCNEILLY RD, Allegheny, PA

Built 2003 Load: 38.1 t ADT: 21,171

SPRING RUN RD EXT

Good

Over: BOGGS RUN

BG01 BOGGS RUN 1, Allegheny, PA

Built 2011 Load: 38.1 t ADT: 2,134

Days Run Road

Good

Over: Days Run

Near Bailey Run Rd, Allegheny, PA

Built 2018 Load: 38.2 t ADT: 497

Center Ave

Good

Over: O'Connell Blvd

DK01 DOOKER'S HOLLOW BR, Allegheny, PA

Built 2021 Load: 38.2 t ADT: 4,000

SR 0060 NB

Good

Over: WEST END

BTWN MAIN AND STEUBEN STS, Allegheny, PA

Built 2008 Load: 38.6 t ADT: 7,697

Thorn Hill Road

Good

Over: PA TPK (I-76)

West of Warrendale, Allegheny, PA

Built 2015 Load: 38.6 t ADT: 22,384

GLASS RUN RD

Good

Over: GLASS RUN

NEAR SR 3100, Allegheny, PA

Built 2017 Load: 38.6 t ADT: 6,305

STREETS RUN RD

Good

Over: STREETS RUN

AT INTER./ SR 3046, Allegheny, PA

Built 2018 Load: 38.6 t ADT: 8,554

East Elfinwild Rd

Good

Over: Pine Creek

PI09 PINE CREEK # 9, Allegheny, PA

Built 2020 Load: 38.6 t ADT: 1,862

Stoops Ferry Road

Good

Over: Flaugherty Run

AT SR 3089 INT, Allegheny, PA

Built 2019 Load: 38.6 t ADT: 13,326

Station Street

Good

Over: Robinson Run

RS04 ROBINSON RUNSBR #4, Allegheny, PA

Built 2019 Load: 38.6 t ADT: 884

RT 50 Connector

Good

Over: SR 3001 - Miller Road

MP 15.93 on Rt 3001, Allegheny, PA

Built 2017 Load: 38.6 t ADT: 1,500

RAMP E

Good

Over: EMBANKMENT

@ INTER W/ 31ST BRIDGE, Allegheny, PA

Built 2013 Load: 38.9 t ADT: 2,834

SALEM HOLLOW RD

Good

Over: NORTH FORK PINE CREEK

600' FROM INTER.W/02141, Allegheny, PA

Built 2013 Load: 38.9 t ADT: 11,206

BUTLER ST

Good

Over: FILL, PED TRAIL

AT PGH ZOO, Allegheny, PA

Built 2014 Load: 38.9 t ADT: 14,090

PA TPK (I-76)

Good

Over: Mt. Pleasant Road

WEST OF WARRENDALE TOLL, Allegheny, PA

Built 2021 Load: 38.9 t ADT: 34,106

Douglas Run Rd

Good

Over: Gillespie Run

Elizabeth, Allegheny, PA

Built 2008 Load: 39.0 t ADT: 1,625

GLASS RUN ROAD

Good

Over: GLASS RUN

NEAR GLENWOOD INTERCHANGE, Allegheny, PA

Built 2015 Load: 39.0 t ADT: 6,305

SAXONBURG BLVD

Good

Over: DEER CREEK

0.5 MI NE OF SR 0910, Allegheny, PA

Built 2013 Load: 39.2 t ADT: 4,773

WB-433

Good

Over: PA TPK (I-76)

West of Indianola, Allegheny, PA

Built 2013 Load: 39.2 t ADT: 6,816

S 28th Street

Good

Over: CSX Railroad Tunnel

0.1 MI NW of Hot Metal Br, Allegheny, PA

Built 2002 Load: 39.2 t ADT: 1,500

SCRUBGRASS ROAD

Good

Over: SCRUBGRASS RUN

0.6 MI SE OF SR3052, Allegheny, PA

Built 2013 Load: 39.5 t ADT: 6,617

BUNOLA RIVER RD

Good

Over: PERRY MILL RUN

AT PANGBURN HOLLOW RD, Allegheny, PA

Built 2016 Load: 39.5 t ADT: 913

SR 0910

Good

Over: Deer Creek

2.4 mi SE of SR 0008, Allegheny, PA

Built 2019 Load: 39.5 t ADT: 4,445

GULF LAB ROAD

Good

Over: INTERSTATE 76

OVER TURNPIKE, Allegheny, PA

Built 2009 Load: 39.9 t ADT: 2,390

GRUBBS RD

Good

Over: PINE CREEK

GRUBBS ROAD, Allegheny, PA

Built 2010 Load: 39.9 t ADT: 2,100

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

Related

Browse all → | Rankings →
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.