Allegheny County, PA

356 public highway bridges

Allegheny County Bridge Snapshot

Allegheny County, Pennsylvania contains 356 public highway bridges in the FHWA National Bridge Inventory. Roughly 48.9% are rated “Good,” 21.3% “Fair,” 4.5% “Poor,” and 4.5% 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.

356
Total Bridges
48.9%
Good
4.5%
Poor
4.5%
Structurally Deficient

Condition Distribution

Good
48.9% (174)
Fair
21.3% (76)
Poor
4.5% (16)
SD
4.5% (16)

All Bridges (356)

SR 0910

Good

Over: PA TPK (I-76)

Near Dorseyville, Allegheny, PA

Built 2015 Load: 47.2 t ADT: 5,608

Ripple Rd

Good

Over: LONG RUN

500 Southeast of SR 0048, Allegheny, PA

Built 2015 Load: 47.3 t ADT: 6,829

SAXONBURG BLVD

Good

Over: Little Pine Creek

1 MI. N.E. of SR 0008, Allegheny, PA

Built 2016 Load: 47.3 t ADT: 3,085

MONON ROAD

Good

Over: BECKETS RUN

100' SW OF TWP RD 636, Allegheny, PA

Built 2011 Load: 48.1 t ADT: 4,283

RAMP T

Good

Over: ELDER ST, TURTLE CRK, RR

TriBoro Expressway, Allegheny, PA

Built 2013 Load: 48.3 t ADT: 3,141

KELSO RD

Good

Over: N BRANCH OF ROBINSON RUN

150' NW OF SR 3108, Allegheny, PA

Built 2010 Load: 49.0 t ADT: 746

Bakerstown Rd

Good

Over: Lardintown Run

200' West of SR 1031, Allegheny, PA

Built 2015 Load: 49.2 t ADT: 3,497

Lovedale Road

Good

Over: Wylie Run

85' NE of Eliz-Linc. Line, Allegheny, PA

Built 2017 Load: 49.2 t ADT: 7,121

SR 885

Good

Over: BLUFF

Blvd of The Allies Bluffs, Allegheny, PA

Built 2001 Load: 49.9 t ADT: 28,222

JUGHANDLE

Good

Over: WEYMAN RUN

51/88 INTERCHANGE JUGHAND, Allegheny, PA

Built 2014 Load: 49.9 t ADT: 3,435

PETER CK RD EXT

Good

Over: LICK RUN

1000 FT NW OF SR 3017, Allegheny, PA

Built 1999 Load: 50.8 t ADT: 675

HOT METAL STREET

Good

Over: CSX RAILROAD TUNNEL

147 Hot Metal St Bridge, Allegheny, PA

Built 2000 Load: 50.8 t ADT: 17,500

HOOKSTOWN GRADE RD

Good

Over: RAREDON RUN

ALLEGHENY-BEAVER CO. LINE, Allegheny, PA

Built 2002 Load: 50.8 t ADT: 291

SR 28 NB

Good

Over: CSX (AVRR)

0.25 MI SOUTH OF SR 8, Allegheny, PA

Built 2010 Load: 50.8 t ADT: 28,232

NORTH BRANCH ROAD

Good

Over: Br. Robinson Run

50FT W OF SR 3063, Allegheny, PA

Built 2009 Load: 51.7 t ADT: 5,639

Library Rd.

Good

Over: Saw Mill Run

SR 51 and SR 88 Intersect, Allegheny, PA

Built 2015 Load: 51.8 t ADT: 21,171

Little Pine Crk Rd

Good

Over: LITTLE PINE CREEK

NEAR TOWNSHIP GARAGE, Allegheny, PA

Built 2015 Load: 51.8 t ADT: 1,904

Grant Ave

Good

Over: Pine Creek

200' W of rte 8 millvale, Allegheny, PA

Built 2007 Load: 54.4 t ADT: 10,338

Piney Fork Rd

Good

Over: Piney Fork Creek

3/4 MI NW of SR 3015, Allegheny, PA

Built 2015 Load: 54.4 t ADT: 675

Saw Mill Run Blvd

Good

Over: Weyman Run

120' south of Provost Rd, Allegheny, PA

Built 2015 Load: 55.7 t ADT: 22,106

SCOTIA HOLLOW RD

Good

Over: SCOTIA RUN

XC01 Scotia Hollow Bridge, Allegheny, PA

Built 2008 Load: 56.2 t ADT: 4,100

MOUNT ROYAL BLVD

Good

Over: CSX RR

NEAR DUNCAN AVE, Allegheny, PA

Built 2001 Load: 57.2 t ADT: 4,160

RAMP F

Good

Over: Chartiers Creek, WERR

BRIDGEVILLE INTERCHANGE, Allegheny, PA

Built 2008 Load: 57.2 t ADT: 6,256

WEST OHIO ST

Good

Over: NORFOLK SOUTHERN R/R

118 West Ohio St Bridge, Allegheny, PA

Built 1903 Load: 57.7 t ADT: 3,479

CAMPBELLS RUN RD

Good

Over: Campbell's Run

CM06 .2 MI E/KEINERS LN, Allegheny, PA

Built 2022 Load: 58.1 t ADT: 6,125

Jones Avenue

Good

Over: Thompson Run East Branch

TE02 THOMPSON,E.S. NO 2, Allegheny, PA

Built 2022 Load: 59.0 t ADT: 462

S.R 8041 CONNECTOR

Good

Over: RAMP N TO MON WHARF

EASTBOUND CONNECTOR RAMP, Allegheny, PA

Built 1940 Load: 60.8 t ADT: 3,074

PA TPK(I-576), EB

Good

Over: TR TO POTATO GARDEN RUN

FINDLAY TWP, Allegheny, PA

Built 2006 Load: 63.5 t ADT: 2,025

PA PTK (I-576), WB

Good

Over: TR TO POTATO GARDEN RUN

FINDLAY TWP, Allegheny, PA

Built 2006 Load: 63.5 t ADT: 2,025

MILLER'S RUN ROAD

Good

Over: MILLER'S RUN

0.7 MI W OF SR0050, Allegheny, PA

Built 2009 Load: 63.5 t ADT: 4,718

Baptist Road

Good

Over: W & LE Railroad

Baptist Road over RR, Allegheny, PA

Built 2008 Load: 65.3 t ADT: 14,037

CLAIRTON BLVD

Good

Over: LEWIS RUN

1.5 MILE NORTH OF SR2030, Allegheny, PA

Built 1999 Load: 81.6 t ADT: 23,832

STREETS RUN RD

Good

Over: STREETS RUN

AT INTER. PROSPECT RD, Allegheny, PA

Built 2010 Load: 83.5 t ADT: 16,138

LOVEDALE ROAD

Good

Over: OVER BRANCH OF WYLIE RUN

ELIZABETH, Allegheny, PA

Built 2010 Load: 85.3 t ADT: 7,888

S.R. 19

Good

Over: SR 837

150' SOUTH OF W. END BR., Allegheny, PA

Built 2003 Load: 92.5 t ADT: 14,476

SR 0050 SH

Good

Over: MILLERS RUN

1/2 MI FROM WASH CO LINE, Allegheny, PA

Built 1972 Load: 99.8 t ADT: 11,250

SAW MILL RUN BLVD

Good

Over: SAW MILL RUN

NEAR BAUSMAN ST, Allegheny, PA

Built 1999 Load: 99.8 t ADT: 47,071

SAW MILL RUN BLVD

Good

Over: SAW MILL RUN

AT WARRINGTON AVE, Allegheny, PA

Built 1999 Load: 99.8 t ADT: 38,563

RAMP A

Good

Over: BRANCH OF MCCLAREN RUN

1300 FT SOUTH OF EWING RD, Allegheny, PA

Built 1997 Load: 99.8 t ADT: 2,816

Summit Dr.

Good

Over: Pine Creek

93' E from Wexford Run Rd, Allegheny, PA

Built 1975 Load: 99.8 t ADT: 100

OLD FREEPORT ROAD

Poor

Over: SYCAMORE RUN

SQ01 SYCAMORE RUN NO. 1, Allegheny, PA

Built 1982 Load: 14.5 t ADT: 825

WALL AV

Poor

Over: DIRTY CAMP RUN

453004 PITCAIRN BOROUGH, Allegheny, PA

Built 1900 Load: 16.3 t ADT: 5,000

MCLAUGHLIN RUN RD

Poor

Over: MCLAUGHLIN RUN

1/2 MI.E.OF BOWER HILL RD, Allegheny, PA

Built 1900 Load: 19.1 t ADT: 5,590

Kay Street

Poor

Over: Little Pine Creek

500 FT FROM SR 1013, Allegheny, PA

Built 1970 Load: 20.0 t ADT: 50

SUMMIT PARK DRIVE

Poor

Over: MONTOUR TRAIL & RUN

.3 MI SW OF US RT 60, Allegheny, PA

Built 1989 Load: 27.2 t ADT: 10,000

EAST MAIN STREET

Poor

Over: CHARTIERS CREEK

1/4 MILE SW CARNEGIE, Allegheny, PA

Built 1934 Load: 27.2 t ADT: 1,200

BOOKER ST

Poor

Over: PUCKETA CREEK

PO05 PUCKETA CREEK # 5, Allegheny, PA

Built 1965 Load: 30.8 t ADT: 366

COCHRANS MILLS RD

Poor

Over: LICK RUN CREEK

0.5 MI S BUREAU OF MINES, Allegheny, PA

Built 1901 Load: 32.7 t ADT: 1,115

STREETS RUN ROAD

Poor

Over: STREETS RUN

NEXT TO OPTION FIRE HALL, Allegheny, PA

Built 1980 Load: 32.7 t ADT: 5,171

Old William Penn

Poor

Over: Thompson Run

Intersect Thompson Run, Allegheny, PA

Built 1924 Load: 32.7 t ADT: 16,904

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

Related

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