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

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

Bridge inventory deck-condition mix — Pennsylvania (FHWA NBI)

Pennsylvania37.42516983924127%35.29965695836416%10.499764579269524%10.499764579269524%GoodFairPoorStructurally 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.

26

Michigan

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

02

Alaska

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

42

Pennsylvania

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

38

North Dakota

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

22

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

SR 3053,GERMANT.PK

Unknown

Over: PA TPK (I-276)

SR 3053,GERMANTOWN PIKE, Montgomery, PA

Built 1954 ADT: 73,197

PA TPK (RAMP G)

Unknown

Over: SR 3053

PART OF MID-COUNTY INTG, Montgomery, PA

Built 1991 ADT: 26,726

PA TPK (Ramp I)

Unknown

Over: PA TPK (I-276)

MID COUNTY INTERCHANGE, Montgomery, PA

Built 1992 ADT: 74,120

PA TPK (I-276)

Unknown

Over: T-357, Narcissa Road

EAST OF NORRISTOWN INTG, Montgomery, PA

Built 1954 ADT: 200

PA TPK (I-276)

Unknown

Over: T-343, BUTLER PIKE

EAST OF NORRISTOWN INTG, Montgomery, PA

Built 1954 ADT: 200

PA TPK (I-276)

Unknown

Over: SR 3003

GEO WASHINGTON MEMORIALPK, Montgomery, PA

Built 1954 ADT: 2,929

SR 3014, LR 46102

Unknown

Over: PA TPK (I-276)

FT WASHINGTON STATE PARK, Montgomery, PA

Built 1954 ADT: 120,317

PA TPK (I-276)

Unknown

Over: SR 0073

SOUTH OF FORT WASHINGTON, Montgomery, PA

Built 1954 ADT: 17,747

PA TPK (I-276)

Unknown

Over: SR 2018 BETH.PIKE

NEAR FORT WASHINGTON, Montgomery, PA

Built 1954 ADT: 7,888

PA TPK (RAMP AB)

Unknown

Over: PA TPK (I-276)

FORT WASHINGTON INTERCHG, Montgomery, PA

Built 1983 ADT: 74,921

T-331

Unknown

Over: PA TPK (I-276)

EAST OF FT WASH INTERCHG., Montgomery, PA

Built 1954 ADT: 120,317

PA TPK (I-276)

Unknown

Over: SR 2017

NEAR DRESHER, Montgomery, PA

Built 1954 ADT: 24,219

SR 0063, LR 198

Unknown

Over: PA TPK (I-276)

WEST OF WILLOW GROVE INTG, Montgomery, PA

Built 1954 ADT: 97,693

PA TPK (RAMPS A&B)

Unknown

Over: PA TPK (I-276)

WILLOW GROVE INTERCHANGE, Montgomery, PA

Built 1983 ADT: 105,529

PA TPK (I-276)

Unknown

Over: SR 0263

EAST OF WILLOW GROVE INTG, Montgomery, PA

Built 1954 ADT: 10,300

LR 46094,SR 2042

Unknown

Over: PA TPK (I-276)

SOUTH OF HATBORO, Montgomery, PA

Built 1954 ADT: 104,500

SR 2009, LR 46095

Unknown

Over: PA TPK (I-276)

SOUTHEAST OF HATBORO, Montgomery, PA

Built 1954 ADT: 92,381

PA TPK (I-276)

Unknown

Over: PIONEER ROAD

EAST OF HATBORO, Montgomery, PA

Built 1954 ADT: 200

COUNTY LINE ROAD

Unknown

Over: PA TPK (I-276)

SOUTH OF SOUTHAMPTON, Montgomery, PA

Built 1954 ADT: 104,500

RAMP R(76E TO 476N

Unknown

Over: RAMP S

CONSHOHOCKEN INTER.35D04, Montgomery, PA

Built 1975 ADT: 19,847

RAMP B (NB)

Unknown

Over: RAMP C (WB) ON RMP

CITY LINE INTERCH 3479-G9, Montgomery, PA

Built 1953 ADT: 2,390

RAMP G

Unknown

Over: RAMP B & RAMP C

CITY LINE INTERCH 3479G09, Montgomery, PA

Built 1953 ADT: 6,271

RAMP C & RAMP D OF

Unknown

Over: MOOREHEAD AVENUE

W.CONSHOHOCKEN 3367K10, Montgomery, PA

Built 1951 ADT: 8,143

RAMP B (NB)

Unknown

Over: GERMANTOWN PIKE/3368E03

SOUTH TPK.EXIT 25, Montgomery, PA

Built 1989 ADT: 26,726

RAMP D TO(SB)I-476

Unknown

Over: GERMANTOWN PIKE/ 3368-E3

SOUTH TPK.EXT.25 29J10, Montgomery, PA

Built 1989 ADT: 26,726

422 - RAMPS K & L

Unknown

Over: 422-COUNTY LINE EXPRESS

U. MER. TWP. 3366D05, Montgomery, PA

Built 1965 ADT: 44,235

RAMP F TO EB EXPWY

Unknown

Over: CITY LINE (NB), RAMP B

CITY LINE INT 40K1/3479G9, Montgomery, PA

Built 1955

PA TPK (I-276)

Unknown

Over: SR 3013

NEAR NORRISTOWN, Montgomery, PA

Built 2000 ADT: 7,779

RAMP B

Unknown

Over: SCHUYLKILL EXPWY, RAMP D

K OF PRUSSIA 3366G07, Montgomery, PA

Built 2002 ADT: 18,488

RAMP A-1 3366G07

Unknown

Over: RAMP B

.5MI SE TPK. EXIT 24, Montgomery, PA

Built 2003 ADT: 19,128

SOUTH WARNER ROAD

Unknown

Over: RAMPS L AND Q

S.I-76/202 34A2/3366F8, Montgomery, PA

Built 2001 ADT: 23,328

SOUTH WARNER ROAD

Unknown

Over: US RTE 202;RMPS F1 AND S

KING OF PRUSSIA 3366-F07, Montgomery, PA

Built 2001 ADT: 122

DEVON PARK DRIVE

Unknown

Over: RAMPS L AND Q

SW WARNER RD 34A2/3366F8, Montgomery, PA

Built 2001 ADT: 56,109

PA TPK (I-276 EB)

Unknown

Over: SR0023,SR3025,NSRR,SEPTA

EAST OF BRIDGEPORT, Montgomery, PA

Built 2000 ADT: 11,928

RAMP D-2

Unknown

Over: SCHUYLKILL EXPWY;RAMP D

.4MI.S.INTER 34B01/3366G7, Montgomery, PA

Built 2002 ADT: 41,826

RAMP D-2 TO RT 422

Unknown

Over: RAMP B ( WB I76)/3366-H7

.2MI.S.GULPH RD 34C01, Montgomery, PA

Built 2003 ADT: 19,128

RAMP I

Unknown

Over: RAMP D / 3366-H7

.3MI.S.GULPH RD 3366H07, Montgomery, PA

Built 2003 ADT: 41,826

RAMP E

Unknown

Over: RAMP B / 3366-H7

.SMI.S.GULPH ROAD 34C01, Montgomery, PA

Built 2003 ADT: 19,128

SUMMIT AVENUE

Unknown

Over: T.R.309 BY-PASS

.5MI N.PA.TPK 3257-H08, Montgomery, PA

Built 2002 ADT: 31,886

FORT WASHINGTON AV

Unknown

Over: PA 309 BY-PASS/ 3257-H7

UPPER DUBLIN TWP, 30K03, Montgomery, PA

Built 2006 ADT: 31,567

MADISON AVENUE

Unknown

Over: PA 309 EXPRESSWAY

FORT WASH. 30K4/3257H8, Montgomery, PA

Built 2006 ADT: 31,567

WILLOW GROVE AVE.

Unknown

Over: PA 309 BY-PASS

LAVEROCK 3370B05, Montgomery, PA

Built 2007 ADT: 25,129

VALLEY GREEN ROAD

Unknown

Over: PA 309 FORT WASH EXPWAY

FT WASHNGTN 3369H01, Montgomery, PA

Built 2006 ADT: 27,676

US202-SR0202,LR143

Unknown

Over: PA. TRNPK( I-276)/3366K6

NEAR KING OF P 28E13, Montgomery, PA

Built 2006 ADT: 55,966

EASTON ROAD

Unknown

Over: PA 309 BY-PASS

CEDARBROOK 3370D07, Montgomery, PA

Built 2007 ADT: 25,129

PA 309 BY-PASS

Unknown

Over: PENNSYLVANIA AVE./SEPTA

FORT WASH. 3257H10, Montgomery, PA

Built 2008 ADT: 9,897

BELVOIR ROAD

Unknown

Over: PA TURNPIKE (I-276)

N. OF RIDGE PIKE 3368A3, Montgomery, PA

Built 2008 ADT: 65,138

PA 309 BY-PASS

Unknown

Over: COMMERCE DRIVE

FORT WASHINGTON 3257H09, Montgomery, PA

Built 2008 ADT: 9,800

PA 309 BY-PASS

Unknown

Over: PA TURNPIKE RAMP AB

FORT WASHINGTON INT., Montgomery, PA

Built 2008 ADT: 6,079

FLINT HILL ROAD

Unknown

Over: PA TPK (I-276)

S. OF BRIDGEPORT 3367-F05, Montgomery, PA

Built 2007 ADT: 65,138

Showing 1,501-1,550 of 14,867 bridges

Related

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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.