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 1009,L.WILHELM

Fair

Over: OVER LAKE WILHELM

NEW VERNON TOWNSHIP, Mercer, PA

Built 1969 Load: 29.9 t ADT: 1,001

SR 2024,KILGORE RD

Fair

Over: OVER WOLF CREEK

WORTH TOWNSHIP, Mercer, PA

Built 1952 Load: 29.9 t ADT: 297

SR 79,NB

Fair

Over: OVER LT SHENANGO R & RR

LAKE TOWNSHIP, Mercer, PA

Built 1969 Load: 30.8 t ADT: 5,845

SR 173,MAIN STREET

Fair

Over: OVER SANDY CREEK

SANDY LAKE BOROUGH, Mercer, PA

Built 1933 Load: 30.8 t ADT: 2,842

SR 3007,PLSKI-MRCR

Fair

Over: OVER W BRANCH NESHANNOCK

WILMINGTON TOWNSHIP, Mercer, PA

Built 1962 Load: 31.8 t ADT: 658

BRIDGE 2113,T-774

Fair

Over: OVER YELLOW CREEK

S.FOSTER RD.,JACKSON TWP., Mercer, PA

Built 1958 Load: 31.8 t ADT: 437

SR 358,HADLEY RDAD

Fair

Over: OVER LITTLE SHENANGO TR

PERRY TOWNSHIP, Mercer, PA

Built 1984 Load: 32.7 t ADT: 2,452

SR 2022,MILLBROOK

Fair

Over: OVER WOLF CREEK BRANCH

WORTH TOWNSHIP, Mercer, PA

Built 1976 Load: 32.7 t ADT: 139

SR 3019,ORANGEVILL

Fair

Over: OVER TOWEL WORKS RUN

CITY OF HERMITAGE, Mercer, PA

Built 1957 Load: 32.7 t ADT: 380

SR 3035,DUTCH LANE

Fair

Over: OVER PINE HOLLOW RUN

MUNICIPALITY OF HERMITAGE, Mercer, PA

Built 1973 Load: 32.7 t ADT: 4,581

BRIDGE 817,T-470

Fair

Over: OVER MATHAY RUN

HAMBURG RD,HEMPFIELD TWP., Mercer, PA

Built 1963 Load: 32.7 t ADT: 3,449

BRIDGE 1110,T-738

Fair

Over: OVER PINE RUN

CAREY RD.,NEW VERNON TWP., Mercer, PA

Built 1958 Load: 32.7 t ADT: 32

BRIDGE 2813,T-412

Fair

Over: OVER HOG BACK RUN

LONGVIEW RD,SHENANGO TWP., Mercer, PA

Built 1966 Load: 32.7 t ADT: 827

SR 358, HADLEY RD.

Fair

Over: SHENANGO RIVER TR

OTTER CREEK TOWNSHIP, Mercer, PA

Built 1935 Load: 33.6 t ADT: 3,344

BRIDGE 506,T-825

Fair

Over: OVER SCHOFIELDS RUN

SMOLA RD.,DEER CREEK TWP, Mercer, PA

Built 1979 Load: 33.6 t ADT: 36

SR 3015,WANSACK RD

Fair

Over: TRIB TO SHENANGO RIVER

SHENANGO TOWNSHIP, Mercer, PA

Built 1962 Load: 34.5 t ADT: 453

SR 79,SB

Fair

Over: OVER LAKE WILHELM

NEW VERNON TOWNSHIP, Mercer, PA

Built 1969 Load: 35.4 t ADT: 6,474

SR 3022,RUTLEDGE R

Fair

Over: OVER SHENANGO RIVER

JEFFERSON TOWNSHIP, Mercer, PA

Built 1967 Load: 35.4 t ADT: 258

BRIDGE 2109,T-786

Fair

Over: OVER FOX RUN

CLARK ROAD,JACKSON TWP., Mercer, PA

Built 1976 Load: 35.4 t ADT: 93

SR 19, PERRY HWY.

Fair

Over: OVER OTTER CREEK TRIB

COOLSPRING TOWNSHIP, Mercer, PA

Built 1930 Load: 36.3 t ADT: 2,222

SR 62,E.STATE ST.

Fair

Over: OVER SHENANGO RIVER TRIB

CITY OF HERMITAGE, Mercer, PA

Built 1948 Load: 36.3 t ADT: 6,906

SR 2004,MILBURN RD

Fair

Over: OVER MILL RUN

SPRINGFIELD TOWNSHIP, Mercer, PA

Built 1992 Load: 36.3 t ADT: 245

SR 80, WB

Fair

Over: W BR LTL NESHANNOCK CRK.

SHENANGO TOWNSHIP, Mercer, PA

Built 1965 Load: 37.2 t ADT: 11,377

SR 3039,FLAT ROAD

Fair

Over: OVER LT NESHANNOCK CR TR

EAST LACKAWANNOCK TWP., Mercer, PA

Built 1892 Load: 37.2 t ADT: 462

SR 80,EB

Fair

Over: OVER LIT.NESHANNOCK CK

LACKAWANNOCK TOWNSHIP, Mercer, PA

Built 1965 Load: 38.1 t ADT: 11,198

SR 80,WB

Fair

Over: OVER LIT.NESHANNOCK CK

LACKAWANNOCK TOWNSHIP, Mercer, PA

Built 1966 Load: 38.1 t ADT: 11,377

BRIDGE 1508,T-660

Fair

Over: OVER OTTER CREEK BRANCH

MARSTELLER RD.,FREDONIA, Mercer, PA

Built 1982 Load: 39.0 t ADT: 327

SR 80, EB

Fair

Over: W BR LTL NESHANNOCK CRK

SHENANGO TOWNSHIP, Mercer, PA

Built 1965 Load: 39.9 t ADT: 11,198

SR 358,HADLEY ROAD

Fair

Over: OVER LITTLE SHENANGO TR

PERRY TOWNSHIP, Mercer, PA

Built 1929 Load: 39.9 t ADT: 1,870

SR 80,EB

Fair

Over: OVER ABANDON RR &SHNGO R

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 Load: 40.8 t ADT: 13,514

SR 80,WB

Fair

Over: OVER ABANDON RR &SHNGO R

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 Load: 40.8 t ADT: 13,487

SR 358,HADLEY ROAD

Fair

Over: OVER SANKEYS RUN

HEMPFIELD TOWNSHIP, Mercer, PA

Built 1953 Load: 40.8 t ADT: 5,707

BRIDGE 2704,T-882

Fair

Over: OVER WOLF CREEK

MONTGOMERY DAM,WOLF CREEK, Mercer, PA

Built 1985 Load: 40.8 t ADT: 48

SR 3009,BUCKWATER

Fair

Over: OVER LT NESHANNOCK CK

LACKAWANNOCK TOWNSHIP, Mercer, PA

Built 1954 Load: 41.7 t ADT: 378

BRIDGE 1509,T-599

Fair

Over: OVER OTTER CREEK

DELAWARE RD.,FAIRVIEW TWP, Mercer, PA

Built 1985 Load: 41.7 t ADT: 52

SR 80,WB

Fair

Over: OVER ABND'N.RR/NESHNK.CK

FINDLEY TOWNSHIP, Mercer, PA

Built 1999 Load: 42.6 t ADT: 12,975

BRIDGE 1203,T-918

Fair

Over: OVER MILL CREEK

FOSTER RD.,MILL CREEK TWP, Mercer, PA

Built 1986 Load: 42.6 t ADT: 58

BRIDGE 1312,T-587

Fair

Over: OVER BRUSH RUN

W.LAKE RD.PYMATUNING TWP., Mercer, PA

Built 1965 Load: 42.6 t ADT: 113

SR 3013 Orchard Rd

Fair

Over: TR LITTLE NESHANNOCK CK

WILMINGTON TWP, Mercer, PA

Built 2010 Load: 42.6 t ADT: 612

SR 80,EB

Fair

Over: OVER BLACK RUN

WOLF CREEK TOWNSHIP, Mercer, PA

Built 1965 Load: 43.5 t ADT: 12,564

SR 1008,DISTRICT R

Fair

Over: OTTER CREEK

DELAWARE TOWNSHIP, Mercer, PA

Built 1974 Load: 43.5 t ADT: 838

SR 1008,DISTRICT R

Fair

Over: OVER OTTER CREEK

DELEWARE TOWNSHIP, Mercer, PA

Built 1974 Load: 43.5 t ADT: 838

BRIDGE 906,T-717

Fair

Over: OVER OTTER CREEK

STRAUB ROAD,OTTER CREEK, Mercer, PA

Built 1985 Load: 43.5 t ADT: 76

BRIDGE 724,T-677

Fair

Over: OVER BIG RUN

COSSITT RD,WEST SALEM TWP, Mercer, PA

Built 1962 Load: 43.5 t ADT: 89

BRIDGE 2714,T-880

Fair

Over: OVER WOLF CREEK EAST BR.

HEMLOCK RD,WOLF CREEK TWP, Mercer, PA

Built 1961 Load: 43.5 t ADT: 6

SR 58, MERCER ROAD

Fair

Over: OVER LAWANGO RUN

DELAWARE TOWNSHIP, Mercer, PA

Built 1960 Load: 44.5 t ADT: 3,409

SR 80,WB

Fair

Over: OVER WOLF CREEK

WOLF CREEK TOWNSHIP, Mercer, PA

Built 1965 Load: 45.4 t ADT: 8,040

RAMP C. SR 80WB

Fair

Over: OVER HOGBACK RUN

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 Load: 45.4 t ADT: 2,061

SR 62,S.MAIN ST.

Fair

Over: OVER SANDY CREEK TRIB

SANDY LAKE BOROUGH, Mercer, PA

Built 1932 Load: 46.3 t ADT: 4,636

SR 358,VERNON ROAD

Fair

Over: BIG RUN

WEST SALEM TOWNSHIP, Mercer, PA

Built 1931 Load: 46.3 t ADT: 1,971

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.