State profile · Above median Poor share

Pennsylvania bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Pennsylvania.

23,299
Public bridges
34.0%
Good condition
12.6%
Poor condition

Pennsylvania holds 23,299 public highway bridges (#8 of 52 by inventory) with a 12.58% Poor share (#7 of 52 by Poor share).

That is 12.6% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 46 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

23,299

Public highway bridges in Pennsylvania

Good Condition

34.0%

7,915 bridges rated 7-9

-16.0pp vs 50% benchmark

Poor Condition

12.6%

2,932 bridges whose lowest applicable component is rated 0-4

5.1pp vs national avg 7.5%

Pennsylvania vs national bridge condition

Pennsylvania - Good condition share 34.0%
National avg

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

Pennsylvania - Poor-condition share 41.9%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

Pennsylvania in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: Pennsylvania has 23,299 bridges and a 12.6% Poor-condition share in the 2024 NBI, rank #46 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: Pennsylvania has 23,299 bridges and a 12.6% Poor-condition share in the 2024 NBI, rank #46 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

Pennsylvania vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

23,299 8th of 54 higher than 46 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for Pennsylvania

The highlighted point is Pennsylvania: 23,299 bridges and 12.58% in Poor condition, rank #46 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Pennsylvania on that same Poor-share ordering:

  • Michigan: 11,371 bridges · 11.27% Poor
  • Louisiana: 12,698 bridges · 11.48% Poor
  • Pennsylvania: 23,299 bridges · 12.58% Poor
  • Guam: 47 bridges · 12.77% Poor
  • Puerto Rico: 2,385 bridges · 13.92% Poor

The full national sortable table lives on the rankings page.

Material families in Pennsylvania

Exclusive FHWA material families across all 23,299 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Pennsylvania’s inventory

State agency holds 70.3% of the 23,299 public highway bridges filed under Pennsylvania in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Pennsylvania’s bridges were built

Pre-1950 construction accounts for 24.8% of the 23,299 bridges with a recorded original year in Pennsylvania. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Pennsylvania34%53.4%12.6%GoodFairPoor
Bridge inventory deck-condition mix - Pennsylvania (FHWA NBI)

Counties (67)

Adams 254 Allegheny 1294 Armstrong 263 Beaver 299 Bedford 417 Berks 667 Blair 338 Bradford 399 Bucks 699 Butler 378 Cambria 284 Cameron 62 Carbon 134 Centre 367 Chester 680 Clarion 172 Clearfield 292 Clinton 212 Columbia 271 Crawford 399 Cumberland 348 Dauphin 449 Delaware 387 Elk 127 Erie 442 Fayette 422 Forest 71 Franklin 294 Fulton 159 Greene 306 Huntingdon 238 Indiana 301 Jefferson 202 Juniata 169 Lackawanna 363 Lancaster 801 Lawrence 265 Lebanon 228 Lehigh 381 Luzerne 457 Lycoming 482 McKean 226 Mercer 438 Mifflin 196 Monroe 315 Montgomery 828 Montour 108 Northampton 356 Northumberland 299 Perry 183 Philadelphia 585 Pike 158 Potter 207 Schuylkill 368 Snyder 161 Somerset 454 Sullivan 119 Susquehanna 284 Tioga 429 Union 163 Venango 189 Warren 217 Washington 655 Wayne 259 Westmoreland 620 Wyoming 140 York 569

Pennsylvania vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Pennsylvania on the same metric.

MI

Michigan

11.27% top marginal rate
Structure
Progressive
Burden @ $100K
$11,371

LA

Louisiana

11.48% top marginal rate
Structure
Progressive
Burden @ $100K
$12,698
Selected

PA

Pennsylvania

12.58% top marginal rate
Structure
Progressive
Burden @ $100K
$23,299

GU

Guam

12.77% top marginal rate
Structure
Progressive
Burden @ $100K
$47

PR

Puerto Rico

13.92% top marginal rate
Structure
Progressive
Burden @ $100K
$2,385

Bridges Needing Most Attention in Pennsylvania

Six lowest-condition bridges in Pennsylvania, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

BLVD OF THE ALLIES

Poor

Over: CSX RR & BIKE TRAIL

005 Charles Anderson Brid, Allegheny, PA

Built 1938 Load: 0.0 t ADT: 21,211

TIMBERLAND AV

Poor

Over: SAW MILL RUN CREEK

113 Timberland Ave, Allegheny, PA

Built 1909 Load: 0.0 t ADT: 30

FREMONT ST

Poor

Over: GIRTYS RUN

FREMONT 25 FROM NORTH AV, Allegheny, PA

Built 1911 Load: 0.0 t ADT: 50

OLD WILLIAMPENN HW

Poor

Over: THOMPSON RUN CREEK

446002 OLD WM PENN HGWY, Allegheny, PA

Built 1900 Load: 0.0 t ADT: 300

FALLSTON BR

Poor

Over: BEAVER RIVER

004026 FALLSTON BRIDGE, Beaver, PA

Built 1884 Load: 0.0 t ADT: 6,523

ELEVENTH AVENUE ET

Poor

Over: BLOCKHOUSE RUN

423005 100 YD /13 ST INT, Beaver, PA

Built 1925 Load: 0.0 t

All Bridges in Pennsylvania

GALLAGHER ROAD

Good

Over: NORFOLK SOUTHERN

GALLAGHER RD. 3368-B4, Montgomery, PA

Built 1995 Load: 39.0 t ADT: 4,000

I-80 EBL

Good

Over: KASE RUN & PRIVATE DRIVE

3 MI E OF DANVILLE EXIT, Montour, PA

Built 1963 Load: 39.0 t ADT: 13,445

SR 2007

Good

Over: OVER KASE RUN

5MI NE OF DANVILLE, Montour, PA

Built 1963 Load: 39.0 t ADT: 290

SR 1007

Good

Over: TRIBUTARY WARRIOR RUN

0.5 MI S OF WARRIOR RUN, Northumberland, PA

Built 1957 Load: 39.0 t ADT: 1,170

BROWN AV.CO.BR#191

Good

Over: LIMESTONE RUN

MILTON BORO, Northumberland, PA

Built 1995 Load: 39.0 t ADT: 1,220

LAUREL RUN ROAD

Good

Over: SOUTH BR LAUREL RUN

3 MI SW OF ELK HILL RD, Perry, PA

Built 1999 Load: 39.0 t ADT: 40

SR 2002

Good

Over: BEECH FLATS RUN

2 MI SW GALETON, Potter, PA

Built 1993 Load: 39.0 t ADT: 476

US TR 11 & 15 NBL

Good

Over: NEW SR 11/15 OVER 11/15

1 MI N OF SELINSGROVE, Snyder, PA

Built 1976 Load: 39.0 t ADT: 10,724

US 219 SBL

Good

Over: T893 MILOW-KIMMER ROAD

3.0 MILE SOUTH OF TR 30, Somerset, PA

Built 2001 Load: 39.0 t ADT: 6,344

SR 4017

Good

Over: BEAVER DAM CREEK

0.1 MI. SE FROM SR 4004, Somerset, PA

Built 1937 Load: 39.0 t ADT: 216

PA TPK (I-76)

Good

Over: BRANCH COXES CRK

NEAR SOMERSET INTERCHANGE, Somerset, PA

Built 2004 Load: 39.0 t ADT: 32,134

T-357 #3

Good

Over: ELK CREEK

2 MI NE OF HILLSGROVE, Sullivan, PA

Built 1989 Load: 39.0 t ADT: 50

T318(NARROW GOUGE)

Good

Over: E.BRANCH WYALUSING CREEK

3 MI NE OF RUSH TWP, Susquehanna, PA

Built 1989 Load: 39.0 t ADT: 50

SR 1006

Good

Over: OVER LITTLE BUFFALO CRK

1 MI NE KELLY CROSS ROADS, Union, PA

Built 1951 Load: 39.0 t ADT: 160

SR 3065

Good

Over: WILLIS RUN

BUSINESS I83 E 2ND.AVE, York, PA

Built 1957 Load: 39.0 t ADT: 11,762

FRANKFORD AVENUE

Good

Over: PENNYPACK CREEK

HOLMESBURGH 3482G04, Philadelphia, PA

Built 1697 Load: 39.0 t ADT: 15,160

S.R. 3003

Good

Over: CHILLISQUAQUE CREEK

4 MI SW WASHINGTONVILLE, Montour, PA

Built 1997 Load: 39.0 t ADT: 146

T-539 STILLWATER R

Good

Over: OVER STILLWATER CREEK

SUGAR GROVE TOWNSHIP, Warren, PA

Built 1997 Load: 39.0 t ADT: 100

SR 19 PERRY HWY

Good

Over: OVER CONNEAUT LAKE OUTLT

UNION TOWNSHIP, Crawford, PA

Built 1998 Load: 39.0 t ADT: 2,723

SR 655-PA 655

Good

Over: LITTLE KISHACOQUILLAS CR

BELLEVILLE, Mifflin, PA

Built 1999 Load: 39.0 t ADT: 6,672

BRISTOL ROAD

Good

Over: LITTLE NESHAMINY CREEK

VILLAGE HARTSVILLE 29E13, Bucks, PA

Built 1999 Load: 39.0 t ADT: 11,970

EAST EAGLE ROAD

Good

Over: SEPTA (P & W)

2MI N.W.CHESTER PK 26F05, Delaware, PA

Built 2001 Load: 39.0 t ADT: 24,967

SR 4035

Good

Over: OVER CATLIN HOLLOW CREEK

.75 MILE NW OF CHARLESTON, Tioga, PA

Built 2000 Load: 39.0 t ADT: 1,686

I-78 WB (LR 1045)

Good

Over: RAMPS A&B SR8018

W.B.OVER SR 8018, Northampton, PA

Built 2001 Load: 39.0 t ADT: 35,465

SR 1009

Good

Over: STARRUCCA CREEK

HARMONY TWP 2.4M E SR1015, Susquehanna, PA

Built 1999 Load: 39.0 t ADT: 471

US 22

Good

Over: SR 4016 & SHAFFERS RUN

.2 M SW PA453(WATER ST), Huntingdon, PA

Built 2001 Load: 39.0 t ADT: 4,055

RAMP 15 SB

Good

Over: TIOGA RIVER & SR 8003

0.5 MI N OF MANSFIELD, Tioga, PA

Built 2001 Load: 39.0 t ADT: 5,004

US 219 NBL

Good

Over: T893 MILOW-FIMMER ROAD

3 MI S OF SR30, Somerset, PA

Built 2002 Load: 39.0 t ADT: 6,276

T-671

Good

Over: LYCOMING CREEK

0.2 MI NE END OF RALSTON, Lycoming, PA

Built 2002 Load: 39.0 t ADT: 108

SR 0220

Good

Over: OVER MUNCY CREEK

PICTURE ROCKS BORO, Lycoming, PA

Built 2002 Load: 39.0 t ADT: 4,302

T-506 GOOD DR

Good

Over: US ROUTE 30

2500 SW OF SR 4020, Lancaster, PA

Built 2001 Load: 39.0 t ADT: 10,300

PA TPK (TOLL 43)

Good

Over: T-854 TRIB. PIGEON CR.

2 MI.S.OF MONONGAHELA INT, Washington, PA

Built 2001 Load: 39.0 t ADT: 5,633

WALKER BRIDGE T395

Good

Over: PIKE RUN

INTERSECTION OF SR 2036, Washington, PA

Built 2002 Load: 39.0 t ADT: 25

SR 3003

Good

Over: GEORGES CREEK

SPRINGHILL/NICHOLSON TWPS, Fayette, PA

Built 2003 Load: 39.0 t ADT: 135

T-510 KNIESS ROAD

Good

Over: CRAB RUN

@ INT T-394 FASSINGER RD, Butler, PA

Built 2002 Load: 39.0 t ADT: 100

SR 3023

Good

Over: EAST BR WYLAUSING CRK

RUSH TWP 425 S TR 706, Susquehanna, PA

Built 2003 Load: 39.0 t ADT: 794

SR.5 EAST LAKE RD.

Good

Over: OVER CSX RAILROAD

CITY OF ERIE, Erie, PA

Built 2002 Load: 39.0 t ADT: 10,262

SR 1008 SIDEHILL R

Good

Over: OVER TWELVE MILE CREEK

NORTH EAST TOWNSHIP, Erie, PA

Built 2004 Load: 39.0 t ADT: 1,113

SR 1075

Good

Over: WYALUSING CREEK

3 MI E OF STEVENSVILLE, Bradford, PA

Built 2004 Load: 39.0 t ADT: 125

SR 4006 PORTER RD

Good

Over: LITTLE SHENANGO RIVER

WEST SALEM TOWNSHIP, Mercer, PA

Built 2005 Load: 39.0 t ADT: 1,277

SR 2012

Good

Over: ALLOWAY CREEK

3 MI.W.OF LITTLESTOWN, Adams, PA

Built 2006 Load: 39.0 t ADT: 275

SR 3025

Good

Over: TUSCARORA CREEK

1 MI N WATERLOO, Juniata, PA

Built 2006 Load: 39.0 t ADT: 263

SR 2002

Good

Over: SHERMANS CREEK

1.5 MI.E. OF DELLVILLE, Perry, PA

Built 2006 Load: 39.0 t ADT: 1,264

WILLIAMSON ROAD

Good

Over: OVER LT.SHENANGO RIVER

HEMPFIELD TOWNSHIP, Mercer, PA

Built 2006 Load: 39.0 t ADT: 2,248

MICKLEY ROAD

Good

Over: JORDAN CREEK

HELFRICH SPRINGS, Lehigh, PA

Built 2006 Load: 39.0 t ADT: 11,000

Hulton Rd

Good

Over: Turnpike B&LE RR

Beside Oakmont Golf Club, Allegheny, PA

Built 2007 Load: 39.0 t ADT: 12,509

TWP RD 411

Good

Over: WHITELEY CREEK

TOWNSHIP ROAD 411, Greene, PA

Built 2005 Load: 39.0 t ADT: 25

T-533

Good

Over: MACEDONIA RUN

1.5 MI NW ARCH ROCK, Juniata, PA

Built 2008 Load: 39.0 t ADT: 10

T-735 AMY ROAD

Good

Over: GRAVEL RUN

.1 MI.S.SR 1002 ON T-735, Crawford, PA

Built 2006 Load: 39.0 t ADT: 50

SR 0247

Good

Over: W BR LACKAWAXEN RIVER

CLINTON TWP 0.1M E TR 170, Wayne, PA

Built 2008 Load: 39.0 t ADT: 1,002

Showing 15,901-15,950 of 23,299 bridges

Related

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

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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

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.

What to do with this

Use Pennsylvania's inventory picture to drill to a county or a specific span.

  • Browse counties in Pennsylvania and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Pennsylvania Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.