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)

REIS RUN ROAD

Fair

Over: LOWRIES RUN

237' W OF SR 4011, Allegheny, PA

Built 1961 Load: 28.1 t ADT: 5,365

SR 0028 SB

Fair

Over: DEER CREEK

NEAR HARMARVILLE INTERCH, Allegheny, PA

Built 1970 Load: 29.0 t ADT: 24,013

Morrow St

Fair

Over: Trib of Chartiers Cr

1 mile north of Glendale, Allegheny, PA

Built 1973 Load: 29.0 t ADT: 150

Barrington Dr.

Fair

Over: Fish Run

226' from Wexford Road, Allegheny, PA

Built 1992 Load: 30.8 t ADT: 100

Old Abers Creek Rd

Fair

Over: Pierson Run

200' S Old Frankstown Rd., Allegheny, PA

Built 1995 Load: 30.8 t ADT: 250

CLAIRTON-GLASSPORT

Fair

Over: MON,NSRC,CSX,URR

CLAIRTON-GLASSPORT BRIDGE, Allegheny, PA

Built 1987 Load: 31.8 t ADT: 6,432

BERAM AVENUE

Fair

Over: WHEELING & LAKE ERIE RR

102001 300' E OF WASH RD, Allegheny, PA

Built 1999 Load: 31.8 t ADT: 1,200

UNION AV

Fair

Over: BR.ROBINSON RUN

@ INTERS.W\SR 3048, Allegheny, PA

Built 1925 Load: 32.7 t ADT: 8,632

BULL CREEK RD

Fair

Over: HOWES RUN

150' S.E. OF SR 1033, Allegheny, PA

Built 1930 Load: 32.7 t ADT: 2,964

ALLEGHENY RIVER BL

Fair

Over: SANDY CREEK

300' NORTHEAST OF SR 0130, Allegheny, PA

Built 1931 Load: 32.7 t ADT: 12,459

MCLAUGHLIN RUN RD

Fair

Over: MCLAUGHLIN RUN

@ INTER.WITH SR 0019, Allegheny, PA

Built 1940 Load: 32.7 t ADT: 15,764

ROCHESTER RD.

Fair

Over: LOWRIES RUN

3000' NORTH OF SR 4022, Allegheny, PA

Built 1941 Load: 32.7 t ADT: 5,431

BABCOCK BL

Fair

Over: NORTH PARK LAKE SPILLWAY

@ N.PARK LAKE SPILLWAY, Allegheny, PA

Built 1936 Load: 32.7 t ADT: 2,562

ALLEGHENY RIVER BL

Fair

Over: ABANDONED RR

1 1/2 MILES E. OF PA 8, Allegheny, PA

Built 1931 Load: 32.7 t ADT: 22,731

ALLEGHENY RIVER BL

Fair

Over: ABANDONED RR

1 1/2 MILES E. OF PA 8, Allegheny, PA

Built 1931 Load: 32.7 t ADT: 22,731

SR0028@MILLVALE

Fair

Over: RAMPB/AND/02400900201211

RT28&4009MILLVALE, Allegheny, PA

Built 1960 Load: 32.7 t ADT: 41,555

South McCully Road

Fair

Over: Thompson Run

300' W OF THOMPSON RUN RD, Allegheny, PA

Built 1950 Load: 32.7 t ADT: 75

Pine Valley Dr.

Fair

Over: Humms Run

300' N SR 286, Allegheny, PA

Built 1995 Load: 32.7 t ADT: 250

T325, WALLACE ROAD

Fair

Over: Catfish Run

BTW T976 & SR3013, Allegheny, PA

Built 2007 Load: 32.7 t ADT: 5,000

BABCOCK BL

Fair

Over: GIRTY'S RUN

520' N.E. OF SR 4009, Allegheny, PA

Built 1926 Load: 33.6 t ADT: 14,237

Blvd Al.Ramp

Fair

Over: 1st Ave, 2nd Ave, Local

Blvd.of Alies to Lib. Br, Allegheny, PA

Built 1928 Load: 33.6 t ADT: 1,259

LAUREL HILL ROAD

Fair

Over: ROBINSON RUN

80' SE OF SR 2246, Allegheny, PA

Built 1956 Load: 34.5 t ADT: 1,628

CO WASTESTA ACC RD

Fair

Over: PINE CREEK

PI35 PINE CREEK NO. 35, Allegheny, PA

Built 1974 Load: 35.4 t ADT: 300

Liberty Br. ramp

Fair

Over: 1st Ave, 2nd Ave, Local

Liberty Br.to Blvd. Alies, Allegheny, PA

Built 1928 Load: 35.4 t ADT: 6,489

DUNCAN AVENUE

Fair

Over: GOURDHEAD RUN

200 FT W OF SR 8, Allegheny, PA

Built 2014 Load: 35.6 t ADT: 4,000

Station St.

Fair

Over: Moon Run

1200 ft North of SR 51, Allegheny, PA

Built 1990 Load: 35.6 t ADT: 100

Veterans Bridge

Fair

Over: ALLEGHENY RIVER

Veterans Bridge, Allegheny, PA

Built 1986 Load: 36.3 t ADT: 59,292

STATE STREET

Fair

Over: LOBBS RUN

440001 AT FLOREFFE VFD, Allegheny, PA

Built 1999 Load: 36.3 t ADT: 500

Becks Run Road

Fair

Over: Flaugherty Run

70' fr Flaugherty Run Rd, Allegheny, PA

Built 1998 Load: 36.3 t ADT: 50

Hickory Grade Rd

Fair

Over: SR 576(Southern Beltway)

MP 17.97 on Rt. 576, Allegheny, PA

Built 2019 Load: 36.6 t ADT: 250

BABCOCK BLVD

Fair

Over: PA TURNPIKE

0.5 MI N SR 910, Allegheny, PA

Built 2007 Load: 37.9 t ADT: 6,640

PANTHER HOLLOW TR

Fair

Over: SCHENLEY PARK STREAM

90 Schenley Prk Hlw Trl 4, Allegheny, PA

Built 1908 Load: 38.1 t ADT: 50

CHARTIERS STREET

Fair

Over: PGH AND OHIO RAILWAY

500 FT SOUTHEAST OF SR 50, Allegheny, PA

Built 1998 Load: 39.0 t ADT: 9,547

PANTHER HOLLOW TR

Fair

Over: SCHENLEY PARK STREAM

087 Schenley Prk Hlw Trl1, Allegheny, PA

Built 1908 Load: 39.9 t ADT: 50

SOUTH HIGHLAND AVE

Fair

Over: ELLSWORTH, E BUSWAY, NSR

100 S Highland Ave Bridge, Allegheny, PA

Built 1925 Load: 39.9 t ADT: 8,242

PA TPK (I-76)

Fair

Over: Trib of Bush Creek

WEST OF WARRENDALE, Allegheny, PA

Built 2021 Load: 40.5 t ADT: 27,341

NORTH AV

Fair

Over: GIRTYS RUN

445001 AT BABCOCK BLVD, Allegheny, PA

Built 1931 Load: 40.8 t ADT: 2,500

Greensburg Pike

Fair

Over: Turtle Creek, NSR

TL06 Turtle Creek #6, Allegheny, PA

Built 2014 Load: 40.8 t ADT: 6,908

Park Manor Blvd

Fair

Over: Montour Run

100' SE of Montour Run Rd, Allegheny, PA

Built 1988 Load: 40.8 t ADT: 2,000

GREENTREE ROAD

Fair

Over: CHARTIERS CREEK

AT INTERSECTION W/PA 50, Allegheny, PA

Built 1960 Load: 41.7 t ADT: 19,293

FORT PITT BL

Fair

Over: MON WHARF PARKING LOT

035 Fort Pitt Blvd, Allegheny, PA

Built 2002 Load: 41.7 t ADT: 15,955

Bell Ave

Fair

Over: Unnamed Tributary

Duncan Way & Bell Ave, Allegheny, PA

Built 1995 Load: 42.6 t ADT: 200

Lindsay Rd

Fair

Over: Unnamed Tributary

Lindsay & Hope Hollow Rd, Allegheny, PA

Built 1995 Load: 42.6 t ADT: 200

CASTLE SHANNON BLV

Fair

Over: SAW MILL RUN

300' NW OF SR 88, Allegheny, PA

Built 1900 Load: 43.5 t ADT: 12,901

Zaenger Drive

Fair

Over: Squaw Run

Off Old Freeport Rd, Allegheny, PA

Built 2004 Load: 43.5 t ADT: 300

Gregg Station Rd

Fair

Over: Robinson Run

Collier Twp, Allegheny, PA

Built 2008 Load: 44.5 t ADT: 500

Grove Rd

Fair

Over: Saw Mill Run

Grove Rd & Rt 88, Allegheny, PA

Built 2010 Load: 44.5 t ADT: 9,131

BOYCE RD

Fair

Over: CHARTIERS CREEK

1/4 MI. EAST OF SR 3005, Allegheny, PA

Built 1996 Load: 47.2 t ADT: 10,193

ROYAL VIEW DR

Fair

Over: CROUSE RUN

207002 ROYAL VIEW DR BRDG, Allegheny, PA

Built 1920 Load: 48.1 t ADT: 300

MONRV-TURTL CRK RD

Fair

Over: TURTLE CREEK BRANCH

TL11 TURTLE CREEK NO 11, Allegheny, PA

Built 1990 Load: 48.1 t ADT: 7,700

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