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

TRAFFIC ROUTE 309

Unknown

Over: SUSQUEHANNA ROAD

UPPER DUBLIN 3257H05, Montgomery, PA

Built 1958 ADT: 7,465

SR 309 BYPASS

Unknown

Over: BUTLER PIKE

UPPER DUBLIN 3257H04, Montgomery, PA

Built 1958 ADT: 5,800

TROOPER ROAD

Unknown

Over: POTTSTOWN EXPRESSWAY

BETZWOOD 27J9/3366C3, Montgomery, PA

Built 1974 ADT: 12,850

POTTSTOWN BY-PASS

Unknown

Over: PORTER ROAD

SANATOGA 3139-C02, Montgomery, PA

Built 1966 ADT: 9,000

POTTSTOWN EXPWAY

Unknown

Over: SANATOGA RD, SANATOGA CR

SANATOGA 3139G02, Montgomery, PA

Built 1965 ADT: 1,050

AIRPORT ROAD

Unknown

Over: POTTSTOWN EXPRESSWAY

LIMERICK TOWNSHIP 3140B03, Montgomery, PA

Built 1984 ADT: 25,179

POTTSTOWN EWAY(EB)

Unknown

Over: LIMERICK CENTER ROAD

LIMERICK TWP 18K01/3140B4, Montgomery, PA

Built 1984 ADT: 2,442

POTTSTOWN EXWY(WB)

Unknown

Over: LIMERICK CENTER ROAD

LIMERICK TWP 18K01/3140B4, Montgomery, PA

Built 1984 ADT: 2,442

POTTSTOWN EX (EB)

Unknown

Over: LEWIS ROAD

LIMERICK INT. 18K3/3140C6, Montgomery, PA

Built 1976 ADT: 11,343

POTTSTOWN EX (WB)

Unknown

Over: LEWIS ROAD

LIMERICK INT. 19A3/3140C6, Montgomery, PA

Built 1976 ADT: 11,343

COUNTRY CLUB ROAD

Unknown

Over: POTTSTOWN EXPRESSWAY

SPRING FORD C.C. 3140-E08, Montgomery, PA

Built 1976 ADT: 25,179

P-TOWN X-WAY (EB)

Unknown

Over: ROYERSFORD ROAD

N ROYERSFORD 3140F09, Montgomery, PA

Built 1976 ADT: 3,000

P-TOWN X-WAY (WB)

Unknown

Over: ROYERSFORD ROAD

N ROYERSFORD 3140F09, Montgomery, PA

Built 1976 ADT: 6,200

POTTSTOWN EWAY(EB)

Unknown

Over: LEWIS ROAD

E ROYERSFORD 19D08/3252H1, Montgomery, PA

Built 1976 ADT: 3,586

P-TOWN X-WAY (EB)

Unknown

Over: PA 29 COLLEGEVILLE ROAD

COLLEGEVILLE 3253D05, Montgomery, PA

Built 1976 ADT: 9,032

P-TOWN X-WAY (WB)

Unknown

Over: COLLEGEVILLE ROAD

COLLEGEVILLE 19K13/3253D5, Montgomery, PA

Built 1976 ADT: 9,032

P-TOWN X-WAY (EB)

Unknown

Over: UPPER INDIAN HEAD ROAD

N. OF OAKS 27D3/3253H8, Montgomery, PA

Built 1984 ADT: 360

P-TOWN X-WAY (WB)

Unknown

Over: UPPER INDIAN HEAD ROAD

N. OF OAKS 27D3/3253H8, Montgomery, PA

Built 1984 ADT: 360

P-TOWN X-WAY (EB)

Unknown

Over: EGYPT ROAD

OAKS 27E5/3253J9, Montgomery, PA

Built 1982 ADT: 10,740

P-TOWN X-WAY (WB)

Unknown

Over: EGYPT ROAD

OAKS 27E5/3253J9, Montgomery, PA

Built 1982 ADT: 10,740

MID-COUNTY EXWY.NB

Unknown

Over: MONTGOMERY AVENUE

L. MERION 35A06 (3477-F2, Montgomery, PA

Built 1974 ADT: 8,000

MID-COUNTY EXWY.SB

Unknown

Over: MONTGOMERY AVENUE

L. MERION 35A06 (3477-F2, Montgomery, PA

Built 1974 ADT: 8,000

MID-COUNTY EXWY-NB

Unknown

Over: SCHUYLKILL EXWAY;RAMPS

CONSHOHOCKEN INTER3367J10, Montgomery, PA

Built 1977 ADT: 29,314

MID-COUNTY EXWY.SB

Unknown

Over: SCHUYLKILL EXWAY;RAMPS

CONSHOHOCKEN INTER3367J10, Montgomery, PA

Built 1977 ADT: 5,812

MID-COUNTY EXWY.NB

Unknown

Over: MATSONFORD/DEHAVEN RDS.

WEST CONSHOHOCKEN 3367J10, Montgomery, PA

Built 1976 ADT: 16,975

MID-COUNTY EXWY-NB

Unknown

Over: BALLIGOMINGO RD/GULPH CR

WEST CONSHOHOCKEN 3367J09, Montgomery, PA

Built 1972 ADT: 3,089

MID-COUNTY EXWY.SB

Unknown

Over: MATSONFORD/DEHAVEN RDS.

W. CONSHOHOCKEN 3367J10, Montgomery, PA

Built 1976 ADT: 16,975

MID-COUNTY EXWY-SB

Unknown

Over: Balligomingo RD/Gulph CR

WEST CONSHOHOCKEN 3367F09, Montgomery, PA

Built 1972 ADT: 3,089

MID-COUNTY EXWY.NB

Unknown

Over: PLYMOUTH CREEK;ACCESS RD

PLYMOUTH TWP. 3368A07, Montgomery, PA

Built 1974 ADT: 850

MID-COUNTY EXWY.NB

Unknown

Over: BROOK ROAD

PLYMOUTH TOWNSHIP 3368A07, Montgomery, PA

Built 1974 ADT: 1,200

MID-COUNTY EXWY.SB

Unknown

Over: BROOK ROAD

PLYMOUTH TOWNSHIP 3368A07, Montgomery, PA

Built 1974 ADT: 1,600

RIDGE PIKE

Unknown

Over: MID-COUNTY EXPRESSWAY

PLYMOUTH TOWNSHIP 29F12, Montgomery, PA

Built 1978 ADT: 43,421

MID-COUNTY EXWY.NB

Unknown

Over: CHEMICAL ROAD / 3368-C5

PLYMOUTH TOWNSHIP 29G11, Montgomery, PA

Built 1974 ADT: 7,255

MID-COUNTY EXWY.NB

Unknown

Over: CHEMICAL ROAD/3368-D4

SW.OF TPK.EXIT 25 29H10, Montgomery, PA

Built 1990 ADT: 15,172

RAMP K

Unknown

Over: ACCESS ROAD / 3368-D3

AT TURNPIKE EXT 25 29H09, Montgomery, PA

Built 1989 ADT: 200

EASTON RD 3258K4

Unknown

Over: PA TURNPIKE RAMP AB

UPPER MORELAND 3254K04, Montgomery, PA

Built 1953 ADT: 12,876

S 202 - RAMP R

Unknown

Over: SCHUYLKILL PARKWAY

BRIDGEPORT 28J10/3367D4, Montgomery, PA

Built 1972 ADT: 7,810

PLYMOUTH ROAD

Unknown

Over: PA TURNPK (EB/WB)/3368E3

JUST E.GERMAN PK. 29J09, Montgomery, PA

Built 1989 ADT: 7

WEST AIRY STREET

Unknown

Over: MARKLEY ST;SEPTA;CRK;RD

NORRISTOWN 3367-E02, Montgomery, PA

Built 1977 ADT: 1

CONSHOHOCKEN ROAD

Unknown

Over: UPPER MERION & PLYMOUTH

PLYMOUTH TWP.35D01/3367K8, Montgomery, PA

Built 1964 ADT: 15

NEW US 202

Unknown

Over: SCHUYLKILL PKWY,RD,NSRC

BRIDGEPORT 3367-D04, Montgomery, PA

Built 1972 ADT: 980

PAWLINGS RD

Unknown

Over: P-TOWN EXPWY, SCH.RV.TRL

SOUTH OF OAKS 3365H02, Montgomery, PA

Built 1981 ADT: 32,023

EVERGREEN ROAD

Unknown

Over: POTTSTOWN EXPWAY/3139-H2

LOWER POTTSGROVE 3139H02, Montgomery, PA

Built 1984 ADT: 25,179

RIDGE PIKE

Unknown

Over: TOWNSHIP LINE ROAD

LIMERICK 3139-J02, Montgomery, PA

Built 1965 ADT: 4,706

Easton Road

Unknown

Over: SR0073; Church Road

.5 Mi N PA-309 3370-E6, Montgomery, PA

Built 1933 ADT: 8,767

T-110 (SB)

Unknown

Over: PA TPK (I-276)

NEAR KING OF PRUSSIA, Montgomery, PA

Built 1954 ADT: 55,966

PA TPK (I-276)

Unknown

Over: SR 3027, LR46137

SOUTH OF NORRISTOWN, Montgomery, PA

Built 2008 ADT: 2,553

RIDGE PIKE

Unknown

Over: PA TPK (I-276)

SOUTHEAST OF NORRISTOWN, Montgomery, PA

Built 1954 ADT: 65,138

PA TPK (I-276)

Unknown

Over: T-694

WEST OF NORRISTOWN INTG, Montgomery, PA

Built 2006 ADT: 200

PA TPK RAMP AB

Unknown

Over: PA TPK (I-276)

NORRISTOWN INTERCHANGE, Montgomery, PA

Built 1954 ADT: 18,393

Showing 1,451-1,500 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.