State profile · Above national median SD

Pennsylvania bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Pennsylvania - drawn straight from the FHWA National Bridge Inventory.

14,867
Public bridges
37.4%
Good condition
10.5%
Poor condition
10.5%
Structurally deficient

Data updated May 2026

Total Bridges

14,867

Public highway bridges in Pennsylvania

Good Condition

37.4%

5,564 bridges rated 7-9

-12.6pp vs 50% benchmark

Poor Condition

10.5%

1,561 bridges rated 0-4

Structurally Deficient

10.5%

1,561 bridges flagged for repair priority

3.5pp vs national avg 7.0%

Pennsylvania vs national bridge condition

Pennsylvania - Good condition share 37.4%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Pennsylvania - Structurally deficient share 35.0%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Pennsylvania45%42.4%12.6%GoodFairPoor (structurally deficient)
Bridge inventory deck-condition mix - Pennsylvania (FHWA NBI)

Counties (67)

Adams 94 Allegheny 356 Armstrong 109 Beaver 84 Bedford 99 Berks 187 Blair 83 Bradford 114 Bucks 184 Butler 142 Cambria 67 Cameron 21 Carbon 29 Centre 183 Chester 285 Clarion 119 Clearfield 195 Clinton 147 Columbia 187 Crawford 263 Cumberland 239 Dauphin 283 Delaware 269 Elk 95 Erie 331 Fayette 341 Forest 51 Franklin 215 Fulton 97 Greene 209 Huntingdon 162 Indiana 214 Jefferson 140 Juniata 109 Lackawanna 212 Lancaster 509 Lawrence 162 Lebanon 221 Lehigh 255 Luzerne 307 Lycoming 301 McKean 166 Mercer 273 Mifflin 129 Monroe 214 Montgomery 608 Montour 74 Northampton 253 Northumberland 193 Perry 102 Philadelphia 584 Pike 108 Potter 145 Schuylkill 199 Snyder 106 Somerset 400 Sullivan 119 Susquehanna 284 Tioga 429 Union 163 Venango 189 Warren 217 Washington 655 Wayne 259 Westmoreland 619 Wyoming 140 York 569

Pennsylvania vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient, the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Pennsylvania on the same metric.

MI

Michigan

8.92% top marginal rate
Structure
Progressive
Burden @ $100K
$1,188

AK

Alaska

10.12% top marginal rate
Structure
Progressive
Burden @ $100K
$909
Selected

PA

Pennsylvania

10.50% top marginal rate
Structure
Progressive
Burden @ $100K
$14,867

ND

North Dakota

10.84% top marginal rate
Structure
Progressive
Burden @ $100K
$4,242

LA

Louisiana

11.00% top marginal rate
Structure
Progressive
Burden @ $100K
$12,699

Bridges Needing Most Attention in Pennsylvania

Six lowest-condition bridges in Pennsylvania, ranked by composite NBI rating. Each is inspected at least every 24 months.

SR0286

Poor

Over: KISKIMINETAS RIVER

SALTSBURG, Indiana, PA

Built 1985 Load: 0.9 t ADT: 4,169

T-783 HARRIS HILL

Structurally Deficient

Over: TOBYS CREEK

100 FT NE OF SR 309, Luzerne, PA

Built 1920 Load: 0.9 t ADT: 220

BRIDGE 2805,T-303

Structurally Deficient

Over: OVER SHENANGO RIVER TRIB

HEASLEY RD SHENANGO TWP, Mercer, PA

Built 1922 Load: 0.9 t ADT: 89

SR 3014

Poor

Over: LAUREL HILL CREEK

BARRONVALE, Somerset, PA

Built 1962 Load: 0.9 t ADT: 167

Clark Street

Structurally Deficient

Over: Fallen Timber Run

Clark St, Hooversville, Somerset, PA

Built 1910 Load: 0.9 t ADT: 100

SR 4012

Structurally Deficient

Over: LOYALSOCK CREEK

BORO OF FORKSVILLE, Sullivan, PA

Built 1850 Load: 0.9 t ADT: 137

All Bridges in Pennsylvania

BOYLE RD; T-313

Unknown

Over: US 15; SR 0015 BMS3

N OF MARYLAND LINE, Adams, PA

Built 1963 ADT: 8,415

PA 97; SR 0097

Unknown

Over: US 15; SR 0015

2.5 MI S.E. OF GETTYSBURG, Adams, PA

Built 2000 ADT: 11,968

SR 28 SB

Unknown

Over: RT 8 NB/SB, RT 8 RMPS

ETNA INTERCHANGE SB, Allegheny, PA

Built 1960 ADT: 3,725

FREEPORT RD

Unknown

Over: S.OAKHILL Rd.& SQUAW RUN

AT BLAWNOX INTERCHANGE, Allegheny, PA

Built 1965 ADT: 1,000

FREEPORT RD

Unknown

Over: S.OAKHILL DR.& SQUAW RUN

600'N.OF FOX CHAPEL RD., Allegheny, PA

Built 1965 ADT: 200

SR 0030 EB WB

Unknown

Over: OVER BESSEMER AVE

RT 30 OVER BESSEMER AVE, Allegheny, PA

Built 1937 ADT: 1,000

RAYMOND P SHAFE HW

Unknown

Over: RED MUD HOLLOW RD

1 MI.NORTH OF SR4022, Allegheny, PA

Built 1970 ADT: 1,297

PARKWAY EAST

Unknown

Over: BRADDOCK AVE

PARKWAY EAST-BRADDOCK AVE, Allegheny, PA

Built 1951 ADT: 10,000

CROSSTOWN BLVD

Unknown

Over: FIFTH AVE

I579 SB.OVER 5TH AVENUE, Allegheny, PA

Built 1962 ADT: 5,678

I-579 NB

Unknown

Over: SR28, 8108,EAST OHIO ST.

Vets Bridge N. Appr, Allegheny, PA

Built 1988 ADT: 16,204

MIFFLIN ROAD

Unknown

Over: GLASS RUN ROAD

AT GLENWOOD INTERCHANGE, Allegheny, PA

Built 1963 ADT: 3,319

MIFFLIN RD

Unknown

Over: SR 8059

AT GLENWOOD INTERCHANGE, Allegheny, PA

Built 1967 ADT: 3,590

MIFFLIN RD

Unknown

Over: SR 8059(RAMP A)

GLENWOOD INTERCHANGE, Allegheny, PA

Built 1967 ADT: 5,114

BLVD ALLIES WB

Unknown

Over: FORBES, BIRM E&F, BRADY

Birmingham Bridge, Allegheny, PA

Built 1928 ADT: 9,850

STUBENVILLE PIKE

Unknown

Over: RT 22

STUEBENVILLE PIKE O/TR 22, Allegheny, PA

Built 1964 ADT: 11,072

WEXFORD RUN RD

Unknown

Over: SR 0079 NB SB

WEXFORD RUN ROAD, Allegheny, PA

Built 1974 ADT: 38,645

CALIFORNIA AVENUE

Unknown

Over: FARRAGUT ST, JACKS RUN

JA01 JACKS RUN NO 1, Allegheny, PA

Built 1925 ADT: 100

TENTH STREET BR

Unknown

Over: I-376 AND CSX RR

MA11 SOUTH 10TH ST BRDG, Allegheny, PA

Built 1933 ADT: 33,352

OAKWOOD RD

Unknown

Over: PENSDALE ST,OAKWOOD RUN

OK03 OAKWOOD RUN NO. 3, Allegheny, PA

Built 1984 ADT: 50

CALIFORNIA AV

Unknown

Over: SPRUCE RUN RD,SPRUCE RUN

P50008 AVALON BRDG-PT12, Allegheny, PA

Built 1994 ADT: 50

CENTER AV

Unknown

Over: CAMP HORNE RD,LOWRIES RN

P50004 EMSWORTH - PT05, Allegheny, PA

Built 1973 ADT: 50

RIDGEWOOD AV

Unknown

Over: CENTER AVENUE

474001 OVER CENTER AVE, Allegheny, PA

Built 1940 ADT: 1,000

RAMP F RD

Unknown

Over: BALDWIN RD {6014-02}

PARKWAY RAMP TO I79 N.B., Allegheny, PA

Built 1971 ADT: 4,000

RAMP D

Unknown

Over: RODI RD NB

RAMP D OVER RODI RD.N.B., Allegheny, PA

Built 1962 ADT: 3,248

RAMP H RD

Unknown

Over: RAMPS C,K,& D

Fort Duquesne Bridge, Allegheny, PA

Built 1968 ADT: 2,846

RAMP C

Unknown

Over: RAMP F

Fort Pitt Bridge, Allegheny, PA

Built 1967 ADT: 256

RAMP E

Unknown

Over: SR 0837

Elizabeth Bridge, Allegheny, PA

Built 1947 ADT: 9,655

RAMP E

Unknown

Over: BANKSVILLE RD

RAMP TO SR 0019 NB, Allegheny, PA

Built 1959 ADT: 16,856

RAMP G

Unknown

Over: MADISON,NORFOLKSOUTH RR

Veterans Bridge, Allegheny, PA

Built 1988 ADT: 4,417

STATION ST

Unknown

Over: CRENNELL AVE;BY PAT BSWY

421002 NEXT TO PAT BUSWAY, Allegheny, PA

Built 1997 ADT: 1,000

EAST PROSPECT AV

Unknown

Over: PAT WEST BUSWAY

P50011 50' E/INGRAM AVE, Allegheny, PA

Built 1997

EWING RD

Unknown

Over: BUSINESS 376, SR 3160

EWING ROAD OVER OLD SR 60, Allegheny, PA

Built 1998 ADT: 19,534

SAW MILL RUN BLVD

Unknown

Over: W LIBERTY AVE. SR 3069

0.1 MILE S.LIBERTY TUNNEL, Allegheny, PA

Built 1999 ADT: 21,626

RAMP E SR 8151

Unknown

Over: RAMP C

.1 MILE S. LIBERTY TUNNEL, Allegheny, PA

Built 1999 ADT: 1,920

RAMP D to SR 65 SB

Unknown

Over: CHATEAU ST. N&S RR

SR 65 Marshall Ave. Inter, Allegheny, PA

Built 1972 ADT: 6,000

PERRY HY

Unknown

Over: SR 910

SR 19 OVER SR 910, Allegheny, PA

Built 2002 ADT: 11,206

FREEPORT ROAD

Unknown

Over: SR 79 NB-SB TPK RAMPS

1000 FT EAST OF SR 0019, Allegheny, PA

Built 2003 ADT: 4,629

INTERNATIONAL DR

Unknown

Over: BUSINESS 376, SR 3160

1 MILE S. OF 3089 INTCH, Allegheny, PA

Built 2003 ADT: 5,604

PA TPK (TOLL 43)

Unknown

Over: SR 3017

2.5MI.N. OF FINLEYVILLE I, Allegheny, PA

Built 2002 ADT: 3,742

PA TPK (TOLL 43)

Unknown

Over: SR 3017

2.5MI.N. OF FINLEYVILLE I, Allegheny, PA

Built 2002 ADT: 3,742

PA TPK (TOLL 43)

Unknown

Over: SR0051,PETERS CK,W&LE RR

RAMP W OVER SR0051, Allegheny, PA

Built 2002

PA TPK (TOLL 43)

Unknown

Over: PETERS CR RD, SR0051

RAMP X OVER SR 0051, Allegheny, PA

Built 2002 ADT: 10,539

PA TPK (TOLL 43)

Unknown

Over: SR 0051

RAMP OVER SR 0051, Allegheny, PA

Built 2002 ADT: 10,539

SR 0279 SB

Unknown

Over: VARIOUS CITY STREETS

Fort Duquesne Bridge, Allegheny, PA

Built 1985 ADT: 1

PGH MILLS BLVD

Unknown

Over: SR 0028 NB SB

PGH MILLS MALL, Allegheny, PA

Built 2005 ADT: 20,245

RIDGE ROAD

Unknown

Over: SR 0376 EB WB

SETTLERS CABIN INTERCHANG, Allegheny, PA

Built 2005 ADT: 35,877

STEEN RD

Unknown

Over: SR 0079 NB SB

STEEN RD OVER I-79, Allegheny, PA

Built 2005 ADT: 35,339

RAMP MT-B

Unknown

Over: TURNPIKE ON RAMP(RAMP E)

AIRPORT RAMP FROM SR 60 S, Allegheny, PA

Built 2005 ADT: 356

PA TPK (I-576)

Unknown

Over: POTATO GARDEN RD, RUN

FINDLAY, Allegheny, PA

Built 2006 ADT: 1,084

PA TPK (I-576)

Unknown

Over: SR3071, POTATO GARD RUN

FINDLAY, Allegheny, PA

Built 2004 ADT: 1,084

Showing 1-50 of 14,867 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.

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.