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)

BRIDGE 816,LANCAST

Good

Over: OVER SAUL RUN

LANCASTER AVE.,GREENVILLE, Mercer, PA

Built 1982 Load: 47.2 t ADT: 184

SR 2014,SCRUBGRASS

Good

Over: WOLF CREEK

WOLF, Mercer, PA

Built 2012 Load: 48.0 t ADT: 472

BRIDGE 3116

Good

Over: OVER WOLF CREEK

_CHESTNUT STREET, GROVE C, Mercer, PA

Built 2007 Load: 48.1 t ADT: 1,226

BRIDGE 3108, T-878

Good

Over: BR. WOLF CREEK

DIAMOND ROAD, PINE TWP, Mercer, PA

Built 2008 Load: 48.1 t ADT: 261

MiddlesexMercer Rd

Good

Over: Little Neshannock Creek

LACKAWANNOCK TOWNSHIP, Mercer, PA

Built 2017 Load: 48.3 t ADT: 2,456

BRIDGE 908,T-614

Good

Over: OVER LITTLE SHENANGO R.

FREELAND RD. OTTER CREEK, Mercer, PA

Built 1984 Load: 49.0 t ADT: 511

BRIDGE 608,T-874

Good

Over: OVER NORTH DEER CREEK

LOWER RD.,FRENCH CREEK, Mercer, PA

Built 1997 Load: 49.0 t ADT: 24

BRIDGE 2710,T-481

Good

Over: OVER WOLF CREEK EAST BR.

E. GILMORE RD. WOLF CRK., Mercer, PA

Built 1996 Load: 49.0 t ADT: 231

SR 2025,N.LIBERTY

Good

Over: LAKE BARMORE OUTLET

PINE TOWNSHIP, Mercer, PA

Built 2007 Load: 49.0 t ADT: 2,906

BRIDGE 2631,T-724

Good

Over: OVER PINE RUN

CRIBBS ROAD, FINDLEY TWP, Mercer, PA

Built 1994 Load: 49.9 t ADT: 61

BRIDGE 1601,T-762

Good

Over: OVER LITTLE SHENANGO

CANON RD.,LAKE TOWNSHIP, Mercer, PA

Built 1997 Load: 50.8 t ADT: 978

SR 4021,BEATTY SCH

Good

Over: OVER MCCAIN RUN

SALEM TOWNSHIP, Mercer, PA

Built 1997 Load: 50.8 t ADT: 320

BRIDGE 2005,T-603

Good

Over: OVER COOLSPRINGS CREEK

N.MILL RD.,COOLSPRING TWP, Mercer, PA

Built 1984 Load: 51.7 t ADT: 78

BRIDGE 2712,T-459

Good

Over: OVER WOLF CREEK EAST BR.

BRINKLEY RD. WOLF CREEK, Mercer, PA

Built 1999 Load: 51.7 t ADT: 73

SR 258 Butler Pike

Good

Over: OVER TINKERS RUN

LIBERTY TWP, Mercer, PA

Built 2010 Load: 51.7 t ADT: 2,373

BRIDGE 3201,AIRPRT

Good

Over: OVER WOLF CREEK

AIRPORT RD.,LIBERTY TWP., Mercer, PA

Built 1985 Load: 52.6 t ADT: 1,412

BRIDGE 910,T-614

Good

Over: OVER LT.SHENANGO RIVER

HENRY RD,OTTER CREEK TWP., Mercer, PA

Built 1963 Load: 53.5 t ADT: 755

SR 3020. Lamor Rd

Good

Over: TR TO MAGARGEE RUN

JEFFERSON TWP, Mercer, PA

Built 2011 Load: 55.1 t ADT: 723

SR 318 HUBB-W MID

Good

Over: SHENANGO RIVER TRIB

SHENANGO TWP, Mercer, PA

Built 2014 Load: 55.1 t ADT: 3,113

SR 3022,RUTLEDGE R

Good

Over: OVER LACAWANNOCK CREEK

JEFFERSON TOWNSHIP, Mercer, PA

Built 1999 Load: 55.3 t ADT: 258

SR 2014,SCRUBGRASS

Good

Over: OVER MILL CREEK

FINDLEY TOWNSHIP, Mercer, PA

Built 2005 Load: 56.2 t ADT: 1,673

SR 4021,BEATTY SCH

Good

Over: OVER SHENANGO RIVER TRIB

SALEM TOWNSHIP, Mercer, PA

Built 2001 Load: 57.2 t ADT: 320

BRIDGE 2711,T-914

Good

Over: OVER WOLF CREEK BRANCH

SOPHER ROAD,WOLF CREEK, Mercer, PA

Built 1985 Load: 58.1 t ADT: 39

T-889, SUNOL RD.

Good

Over: NORTH DEER CK.

_DEER CREEK TOWNSHIP, Mercer, PA

Built 2007 Load: 58.1 t ADT: 41

BRIDGE 112,T-374

Good

Over: OVER SUGAR RUN

SUGAR RUN RD.,GREENE TWP., Mercer, PA

Built 1990 Load: 59.9 t ADT: 81

BAKER HILL ROAD

Good

Over: SUGAR RUN

DELAWARE TWP., Mercer, PA

Built 2010 Load: 59.9 t ADT: 226

SR 718,STATE ST

Good

Over: SHENANGO RIVER

CITY SHARON, Mercer, PA

Built 2007 Load: 61.7 t ADT: 4,628

SR 3022,RUTLEDGE R

Good

Over: OVER LACKAWANNOCK CREEK

JEFFERSON TOWNSHIP, Mercer, PA

Built 1999 Load: 67.1 t ADT: 258

SR 4021,BEATTY SCH

Good

Over: SHENANGO RIVER TRIB

SUGAR GROVE TOWNSHIP, Mercer, PA

Built 2003 Load: 68.0 t ADT: 132

SR 1004, Stoneboro

Good

Over: COOLSPRING CREEK

FAIRVIEW TWP, Mercer, PA

Built 2010 Load: 69.9 t ADT: 391

SR 4001, N SUMMIT

Good

Over: SUGAR RUN TRIB

GREENE TWP, Mercer, PA

Built 2013 Load: 74.5 t ADT: 190

BRIDGE 2106

Good

Over: OVER UNNAMED TR.FOX RUN

FOX MINE RD.JACKSON TWP., Mercer, PA

Built 2006 Load: 77.1 t ADT: 444

BRIDGE 3113,T-888

Good

Over: OVER SWAMP RUN

TIE LINE RD,PINE TOWNSHIP, Mercer, PA

Built 1968 Load: 78.0 t ADT: 561

BRIDGE 2903,T-548

Good

Over: OVER LT. NESHANNOCK CK.B

NO. 8 RD.,WILMINGTON TWP., Mercer, PA

Built 1956 Load: 83.5 t ADT: 132

SR 1011

Good

Over: PINE RUN

PERRY TOWNSHIP, Mercer, PA

Built 1907 Load: 88.9 t ADT: 431

BRIDGE 2323

Good

Over: OVER HOGBACK RUN

HOGBACK RD., HERMITAGE, Mercer, PA

Built 2007 Load: 99.8 t ADT: 177

BRIDGE 250,T-568

Poor

Over: OVER BLUFF RUN

CALVIN RD,SUGAR GROVE TWP, Mercer, PA

Built 1900

BRIDGE 2805,T-303

Poor

Over: OVER SHENANGO RIVER TRIB

HEASLEY RD SHENANGO TWP, Mercer, PA

Built 1922 Load: 0.9 t ADT: 89

TOWNSHIP ROAD 182

Poor

Over: BIG RUN

0.7 MI. S. CR186, Mercer, PA

Built 1964 Load: 2.7 t ADT: 324

LEBANON AVE.

Poor

Over: OVER SAUL RUN

LEBANON AVE.,GREENVILLE, Mercer, PA

Built 1934 Load: 3.6 t ADT: 214

BRIDGE 1015,T-740

Poor

Over: OVER LITTLE SHENANGO R.

MILL RD, PERRY TOWNSHIP, Mercer, PA

Built 1885 Load: 6.4 t ADT: 57

BRIDGE 2606,T-401

Poor

Over: OVER NESHANNOCK CREEK

OLD MERCER RD E.LACK TWP, Mercer, PA

Built 1922 Load: 8.2 t ADT: 375

BRIDGE 1017,T-693

Poor

Over: OVER PINE RUN

YEAGER RD, PERRY TOWNSHIP, Mercer, PA

Built 1961 Load: 10.9 t ADT: 31

BRIDGE 124,T-480

Poor

Over: OVER BRANCH OF SHENANGO

MURPHY ROAD,GREENE TWP, Mercer, PA

Built 1963 Load: 11.8 t ADT: 78

BRIDGE 2329,WENGLE

Poor

Over: OVER PINE HOLLOW RUN

WENGLER AVE.,SHARON, Mercer, PA

Built 1929 Load: 11.8 t ADT: 268

BRIDGE 2108,T-784

Poor

Over: OVER YELLOW CREEK BRANCH

HOSACK RD,JACKSON TWP., Mercer, PA

Built 1965 Load: 12.7 t ADT: 241

SR 4021, ATLANTIC

Poor

Over: BLUFF RUN

SUGAR GROVE TOWNSHIP, Mercer, PA

Built 1952 Load: 19.1 t ADT: 520

BRIDGE 2007,T-688

Poor

Over: OVER OTTER CREEK

TAIT RD,COOLSPRING TWP., Mercer, PA

Built 1966 Load: 20.0 t ADT: 295

SR 2017,N.FOSTER R

Poor

Over: OVER COOL SPRING CREEK

FAIRVIEW TOWNSHIP, Mercer, PA

Built 1952 Load: 20.9 t ADT: 507

BRIDGE 199,T-301

Poor

Over: OVER SUGAR RUN

W COUNTY LINE, GREENE TWP, Mercer, PA

Built 1972 Load: 20.9 t ADT: 160

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.