Mercer County, PA

273 public highway bridges

Mercer County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Mercer County, Pennsylvania contains 273 public highway bridges. Roughly 42.1% are rated “Good,” 30.4% “Fair,” and 13.6% “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.

273
Total Bridges
42.1%
Good
30.4%
Fair
13.6%
Poor Condition

Condition Distribution

Good
42.1% (115)
Fair
30.4% (83)
Poor
13.6% (37)

All Bridges (273)

SR 58,GROVE CITY

Unknown

Over: OVER SR 79 NB / SB

FINDLEY TOWNSHIP, Mercer, PA

Built 1963 ADT: 9,034

SR 60,SB BEAVER

Unknown

Over: OVER T-369,HEWITT ROAD

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 ADT: 50

SR 376 EB

Unknown

Over: SR 80, EB & WB

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 ADT: 11,377

SR 62,SHNGO.VLY.EX

Unknown

Over: OVER RIVERSIDE DR/RIVER

CITY OF SHARON, Mercer, PA

Built 1956 ADT: 49

SR 62,FRANKLIN RD.

Unknown

Over: OVER SR 79,NB/SB

JACKSON TOWNSHIP, Mercer, PA

Built 1965 ADT: 7,014

SR 79,NB

Unknown

Over: OVER SR 80,EB/WB

FINDLEY TOWNSHIP, Mercer, PA

Built 1965 ADT: 12,866

SR 2102,CLNTVLLE R

Unknown

Over: OVER SR 79,NB

FINDLEY TOWNSHIP, Mercer, PA

Built 1966 ADT: 7,292

SR 79,NB

Unknown

Over: OVER SR2014,B&LE,MILL CR

FINDLEY TOWNSHIP, Mercer, PA

Built 1966 ADT: 1,673

SR 2103,MILL BROOK

Unknown

Over: OVER SR 79,NB/SB

JACKSON TOWNSHIP, Mercer, PA

Built 1966 ADT: 7,014

SR 79,SB

Unknown

Over: OVER SR 1009

NEW VERNON TOWNSHIP, Mercer, PA

Built 1969 ADT: 1,001

SR 80,EB

Unknown

Over: OVER SR 718,SIEG HILL RD

SHENANGO TOWNSHIP, Mercer, PA

Built 1964 ADT: 2,631

SR 80,WB

Unknown

Over: OVER SR 718,SIEG HILL RD

SHENANGO TOWNSHIP, Mercer, PA

Built 1964 ADT: 2,631

SR 80,EB

Unknown

Over: OVER SR 18,NEW CASTLE RD

SHENANGO TOWNSHIP, Mercer, PA

Built 1993 ADT: 6,812

SR 80,WB

Unknown

Over: OVER SR 18,NEW CASTLE RD

SHENANGO TOWNSHIP, Mercer, PA

Built 1994 ADT: 6,812

SR 80,EB

Unknown

Over: OVER SR 318,W MDDSX-MER

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 ADT: 2,967

SR 80,WB

Unknown

Over: OVER SR 318,W MDDSX-MER

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 ADT: 2,967

SR 80,EB

Unknown

Over: OVER T300,GREENFIELD RD

LACKAWANNOCK TOWNSHIP, Mercer, PA

Built 1965 ADT: 49

SR 80,WB

Unknown

Over: OVER T300,GREENFIELD RD

LACKAWANNOCK TOWNSHIP, Mercer, PA

Built 1965 ADT: 49

SR 80,EB

Unknown

Over: OVER SR 3007,MRCR-PLSKI

EAST LACKAWANNOCK TWP., Mercer, PA

Built 1965 ADT: 658

SR 80,WB

Unknown

Over: OVER SR 3007,MRCR-PLSKI

EAST LACKAWANNOCK TWP., Mercer, PA

Built 1965 ADT: 658

SR 80,EB

Unknown

Over: OVER SR 19 NB/SB,PERRY

EAST LACKAWANNOCK TWP., Mercer, PA

Built 1965 ADT: 1,833

SR 80,WB

Unknown

Over: OVER SR 19 NB/SB,PERRY

EAST LACKAWANNOCK TWP., Mercer, PA

Built 1965 ADT: 1,833

SR 80,WB

Unknown

Over: OVER SR 258,BUTLER PIKE

FINDLEY TOWNSHIP, Mercer, PA

Built 1966 ADT: 2,720

SR 80,EB

Unknown

Over: OVER SR 173,GROVE CITY

WOLF CREEK TOWNSHIP, Mercer, PA

Built 1965 ADT: 2,502

SR 318,MAIN ST

Unknown

Over: OVER I-376,NB/SB BEAVER

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 ADT: 6,644

SR 358,HADLEY ROAD

Unknown

Over: OVER SR 79,NB/SB

NEW VERNON TOWNSHIP, Mercer, PA

Built 1969 ADT: 6,474

SR 1004,STONEBORO

Unknown

Over: OVER SR 79,NB/SB

LAKE TOWNSHIP, Mercer, PA

Built 1967 ADT: 6,459

SR 1024,CO.LINE RD

Unknown

Over: OVER SR 79,NB/SB

DEER CREEK TOWNSHIP, Mercer, PA

Built 1967 ADT: 6,474

SR 2006,BLACKTOWN

Unknown

Over: OVER SR 79,NB/SB

SPRINGFIELD TOWNSHIP, Mercer, PA

Built 1963 ADT: 8,958

SR 2019,POOLE ROAD

Unknown

Over: OVER SR 79,NB/SB

LAKE TOWNSHIP, Mercer, PA

Built 1965 ADT: 6,459

SR 80,EB

Unknown

Over: OVER SR 2007,T-439 & RR

PINE TOWNSHIP, Mercer, PA

Built 1998 ADT: 1,453

SR 80,WB

Unknown

Over: OVER SR 2007,T-439 & RR

PINE TOWNSHIP, Mercer, PA

Built 1999 ADT: 50

SR 80,EB

Unknown

Over: OVER T998,CENTERTOWN RD.

WOLF CREEK TOWNSHIP, Mercer, PA

Built 1965 ADT: 360

SR 80,WB

Unknown

Over: OVER T998,CENTERTOWN RD.

WOLF CREEK TOWNSHIP, Mercer, PA

Built 1965 ADT: 360

SR 518,WALNUT ST

Unknown

Over: PINE HOLLOW RUN

CITY OF HERMITAGE, Mercer, PA

Built 2006 ADT: 100

SOUTH OAKLAND

Unknown

Over: OVER US 62

SOUTH OAKLAND AVE SHARON, Mercer, PA

Built 2006 ADT: 5,137

SR 208,GROVE CITY

Unknown

Over: OVER I-79,NB/SB

SPRINGFIELD TOWNSHIP, Mercer, PA

Built 2007 ADT: 9,034

SR 62 Shen Vly Exp

Unknown

Over: over SR 718, S DOC & NSR

CITY OF SHARON, Mercer, PA

Built 2010 ADT: 7,198

SR 2004,MILBURN RD

Fair

Over: OVER MILL RUN

SPRINGFIELD TOWNSHIP, Mercer, PA

Built 1904 Load: 6.4 t ADT: 245

BRIDGE 208,T-570

Fair

Over: OVER BLUFF RUN

GROOVER RD,SUGAR GROVE, Mercer, PA

Built 1974 Load: 6.4 t ADT: 85

SR 3018,WALNUT ST

Fair

Over: OVER NS RR / SHENANGO R.

SHARPSVILLE BOROUGH, Mercer, PA

Built 1986 Load: 14.5 t ADT: 5,858

SR 1002,FAIRVIEW R

Fair

Over: OVER OTTER CREEK

FAIRVIEW TOWNSHIP, Mercer, PA

Built 1966 Load: 16.3 t ADT: 859

SR 4003,WASSER RD.

Fair

Over: OVER SHENANGO RIVER

WEST SALEM TOWNSHIP, Mercer, PA

Built 1914 Load: 16.3 t ADT: 304

SR 2024,KILGORE RD

Fair

Over: OVER WOLF CREEK BRANCH

WORTH TOWNSHIP, Mercer, PA

Built 1960 Load: 17.2 t ADT: 133

SR 4002, COAL HILL

Fair

Over: BIG RUN

WEST SALEM TOWNSHIP, Mercer, PA

Built 1977 Load: 18.1 t ADT: 202

SR 2025,N LIBERTY

Fair

Over: OVER BLACK RUN

LIBERTY TOWNSHIP, Mercer, PA

Built 1952 Load: 20.9 t ADT: 1,643

SR 1018,MLLDGVLL.R

Fair

Over: OVER LAKE WILHELM

DEER CREEK TOWNSHIP, Mercer, PA

Built 1969 Load: 24.5 t ADT: 631

SR 79,SB

Fair

Over: OVER LT SHENANGO R & RR

LAKE TOWNSHIP, Mercer, PA

Built 1969 Load: 26.3 t ADT: 6,459

SR 2022,MILLBROOK

Fair

Over: OVER WOLF CREEK

WORTH TOWNSHIP, Mercer, PA

Built 1895 Load: 29.0 t ADT: 153

BRIDGE 3121,T-413

Fair

Over: OVER WOLF CREEK

DAUGHERTY RD,PINE TWP., Mercer, PA

Built 1953 Load: 29.0 t ADT: 521

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.