Mercer County, PA

273 public highway bridges

Mercer County Bridge Snapshot

Mercer County, Pennsylvania contains 273 public highway bridges in the FHWA National Bridge Inventory. Roughly 42.1% are rated “Good,” 30.4% “Fair,” 13.6% “Poor,” and 13.6% 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.

273
Total Bridges
42.1%
Good
13.6%
Poor
13.6%
Structurally Deficient

Condition Distribution

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

Related

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