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

PA TPK (RAMP Q)

Unknown

Over: SR 0309; PA TPK Ramp AB

FORT WASHINGTON INT., Montgomery, PA

Built 2009 ADT: 11,476

T-395

Unknown

Over: PA TPK (I-476)

TOWAMENCIN TWP, Montgomery, PA

Built 2008 ADT: 65,390

CONSHOHOCKEN ROAD

Unknown

Over: U MERION & PLYMOUTH RR

PLYMOUTH TWP. 3367K06, Montgomery, PA

Built 2011 ADT: 10

CEDAR HILL ROAD

Unknown

Over: TRAFFIC ROUTE 309

1.5 MI. N. SPRINGHOUSE, Montgomery, PA

Built 2009 ADT: 25,680

PA-309

Unknown

Over: NORRISTOWN ROAD

1.5 MI. W. PA-152 3257F02, Montgomery, PA

Built 2010 ADT: 9,569

PA-309 BYPASS

Unknown

Over: BETHLEHEM PIKE

3/4 MI. S. PA-63 3145E09, Montgomery, PA

Built 2010 ADT: 9,021

U.S. 202 PARKWAY

Unknown

Over: BETHLEHEM PIKE (PA-309)

.1 MI. S. U.S.202 3145B03, Montgomery, PA

Built 2012 ADT: 16,608

BETHEL ROAD

Unknown

Over: PA TPK N.E. EXT. (I-476)

NEAR CTR. SQUARE 3143K10, Montgomery, PA

Built 2008 ADT: 65,329

WALTON ROAD

Unknown

Over: PA TPK NE EXT. (I-476)

.5 MI. N. I-276 3256E10, Montgomery, PA

Built 2011 ADT: 65,329

DEKALB PIKE

Unknown

Over: PA TPK N.E. EXT. (I-476)

2.5 MI. N. I-276 3256C05, Montgomery, PA

Built 2011 ADT: 65,329

MORRIS ROAD

Unknown

Over: PA TURNPIKE EXT. (I-476)

.5 MI. E. PA363 3143J07, Montgomery, PA

Built 2011 ADT: 65,329

RIDGE ROAD

Unknown

Over: PA TPK (I-476)

3.25 MI. W. PA-309 2918H5, Montgomery, PA

Built 2014 ADT: 50,307

ARMAND HAMMER BLVD

Unknown

Over: POTTSTOWN BY-PASS

LOWER POTTSGROVE 3139B03, Montgomery, PA

Built 2014 ADT: 27,516

PA TPK (I-476)

Unknown

Over: SR 0073, Skippack Pike

Near N. Wales Rd 3256-A02, Montgomery, PA

Built 2014 ADT: 12,690

PA TPK (I-476)

Unknown

Over: LR 46154; SR 3001

Norristown, Montgomery, PA

Built 2014 ADT: 12,213

PA TPK (I-276)

Unknown

Over: SR 0611

West of WIllow Grove Intg, Montgomery, PA

Built 2014 ADT: 13,723

PA TPK (I-476)

Unknown

Over: T-403 (Wambold Rd)

N. of Landsdale int., Montgomery, PA

Built 2014 ADT: 12,208

VALLEY FORGE ROAD

Unknown

Over: COUNTY LINE EXPRESSWAY

422 INTERCHANGE 3366C04, Montgomery, PA

Built 2017 ADT: 44,235

RAMP B

Unknown

Over: U.S. 422

SR422/SR23 INTC. 3366C04, Montgomery, PA

Built 2018 ADT: 46,888

PA TPK (I-476)

Unknown

Over: S. Valley Forge Rd

1.23 mi South of SR 22, Montgomery, PA

Built 2018 ADT: 11,931

RAMP XY -GROSSTOWN

Unknown

Over: POTTSTOWN BYPASS

STOWE INTERCHANGE 3137K02, Montgomery, PA

Built 2019 ADT: 18,107

PLEASANT VIEW ROAD

Unknown

Over: POTTSTOWN EXPRESSWAY

SANATOGA 12C11 / 3139E02, Montgomery, PA

Built 2021 ADT: 27,516

S PARK ROAD

Unknown

Over: US 422

LOWER POTTSGROVE 3139G02, Montgomery, PA

Built 2023 ADT: 27,523

I-80 WB

Unknown

Over: OVER S.R. 3013

MONTOUR-NORTHD CO. LINE, Montour, PA

Built 1962 ADT: 306

I-80 WBL

Unknown

Over: OVER SR 3003

5.9 MI. W DANVILLE EXIT, Montour, PA

Built 1963 ADT: 376

I-80 EB

Unknown

Over: TRIB MAUSES CR & SR 3007

2.1 MI. W DANVILLE EXIT, Montour, PA

Built 1963 ADT: 286

I-80 WB

Unknown

Over: MAUSES CR-AND SR 3007

2.1 MI. W DANVILLE EXIT, Montour, PA

Built 1963 ADT: 286

I-80 WBL

Unknown

Over: SR 54 & INDIAN CREEK

DANVILLE INTERCHANGE, Montour, PA

Built 1963 ADT: 7,206

SR 642

Unknown

Over: OVER I-80 EBL AND WBL

4.5 MI NE OF DANVILLE, Montour, PA

Built 1963 ADT: 13,961

SR 2007

Unknown

Over: SR 2007 OVER I-80

2.5 MI E OF DANVILLE EXIT, Montour, PA

Built 1963 ADT: 13,961

SR 3006

Unknown

Over: SR 3006 OVER I-80 EB,WB

2.8 MI W OF DANVILLE EXIT, Montour, PA

Built 1962 ADT: 12,929

US 22 (LR 772)

Unknown

Over: PA 512(LR 48046)

PA 512 INTERCHANGE, Northampton, PA

Built 1954 ADT: 9,758

US 22 (LR 772)

Unknown

Over: TWP.LINE RD.(T-434)

US 22 OVER T-434, Northampton, PA

Built 1954 ADT: 750

US 22 (LR 772)

Unknown

Over: PA 191 & MONOCACY CR.

PA 191 INTERCHANGE, Northampton, PA

Built 1954 ADT: 8,528

SR2027 HECKTOWN RD

Unknown

Over: US 22 (LR 772)

HECKTOWN RD. OVER US.22, Northampton, PA

Built 1954 ADT: 40,600

SR2029FARMERSVILLE

Unknown

Over: SR 22 (LR 772)

T-452 OVER U.S. 22, Northampton, PA

Built 1954 ADT: 40,720

SR2031COUNTRY CLUB

Unknown

Over: US 22 (LR 772)

T-454 OVER U.S. 22, Northampton, PA

Built 1954 ADT: 15,125

US 22(LR 773)

Unknown

Over: SR 2012(LR 48013)25TH ST

25TH ST.INTERCHANGE, Northampton, PA

Built 1954 ADT: 10,896

SR 22 (LR 773)

Unknown

Over: SR 248 (LR 175)

25TH ST.INTERCHANGE, Northampton, PA

Built 1954 ADT: 3,380

US 22

Unknown

Over: SR 2019 (LR 48021)

13TH ST.INTERCHANGE, Northampton, PA

Built 1954 ADT: 14,418

US 22(LR 773)

Unknown

Over: BUSHKILL DR.,CEM. DR.,CK

0.25 MI.W.PA.611 EXIT, Northampton, PA

Built 1954 ADT: 5

US 22 (LR 773)

Unknown

Over: BUSHKILL CREEK & DRIVE

PA 611 EXIT, Northampton, PA

Built 1954 ADT: 350

SR2042 HECKTOWN RD

Unknown

Over: PA 33

HECKTOWN RD.OVER PA.33, Northampton, PA

Built 1972 ADT: 36,722

PA 33NB(LR 1098)

Unknown

Over: PA 248(LR 175)

PA 248 INTERCHANGE, Northampton, PA

Built 1972 ADT: 8,401

PA 33 SB(LR 1098)

Unknown

Over: PA 248 (LR 175)

PA 248 EXIT, Northampton, PA

Built 1972 ADT: 8,401

SR 33 SB(LR1098)

Unknown

Over: T-516 VAN BUREN RD.

1 MI N OF PA 248, Northampton, PA

Built 1972 ADT: 1,200

PA 33 NB(LR 1098)

Unknown

Over: SR 1012(LR 48087)

BELFAST INTERCHANGE, Northampton, PA

Built 1969 ADT: 1,797

PA 33 SB(LR 48040)

Unknown

Over: SR 1008(LR 48040)

BELFAST INTERCHANGE, Northampton, PA

Built 1969 ADT: 5,183

PA 33 SB(LR 1098)

Unknown

Over: SR 1012(LR 48087)

BELFAST INTERCHANGE, Northampton, PA

Built 1969 ADT: 1,797

SR1042 T614 KROMER

Unknown

Over: PA 33(LR 1098)

KROMER RD.OVER PA.33, Northampton, PA

Built 1969 ADT: 19,407

Showing 1,551-1,600 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.