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

BRIDGE 2710 T-481

Good

Over: OVER WOLF CREEK EAST BR.

E. GILMORE RD. WOLF CRK., Mercer, PA

Built 1996 Load: 49.0 t ADT: 231

RAMP D

Good

Over: RAMP A;INTERSTATE 95

KEYSTONE INDST.PK. 42F09, Bucks, PA

Built 1999 Load: 49.0 t ADT: 5,207

US 522

Good

Over: JUNIATA RIVER

522 @ 22 INTERSECTION, Huntingdon, PA

Built 1998 Load: 49.0 t ADT: 5,192

SR 322-US 322 E.B.

Good

Over: TRIB LAUREL RUN

MILROY, Mifflin, PA

Built 1999 Load: 49.0 t ADT: 8,370

SR 322-US 322 W.B.

Good

Over: TRIB LAUREL RUN

MILROY, Mifflin, PA

Built 1999 Load: 49.0 t ADT: 8,559

SR 322-US 322 E.B.

Good

Over: LINGLE CREEK

MILROY, Mifflin, PA

Built 1999 Load: 49.0 t ADT: 8,394

SR 322-US 322 W.B.

Good

Over: LINGLE CREEK

MILROY, Mifflin, PA

Built 1999 Load: 49.0 t ADT: 8,585

SR 0954

Good

Over: TWOLICK CREEK

UPPER TWO LICK, Indiana, PA

Built 1999 Load: 49.0 t ADT: 6,493

PA 655

Good

Over: TRIB TO SPRING CREEK

3 MI SW OF THREE SPRINGS, Huntingdon, PA

Built 2000 Load: 49.0 t ADT: 936

SR 26-PA 26 RAMP

Good

Over: SR 99-I 99

5 MI SE BELLEFONTE, Centre, PA

Built 2000 Load: 49.0 t ADT: 1,936

NEW HOPE ROAD

Good

Over: MILL CREEK

1.2MIWEST RTE 413 30E03, Bucks, PA

Built 2000 Load: 49.0 t ADT: 344

PA TPK (I-276)

Good

Over: NSRC & Diamond Run

NEAR NORRISTOWN, Montgomery, PA

Built 2000 Load: 49.0 t ADT: 65,138

SR 2019

Good

Over: TRIB TO BEAVER CREEK

2.3 MI.E.OF COLONIAL PARK, Dauphin, PA

Built 2000 Load: 49.0 t ADT: 8,999

SR 0239 TR 239

Good

Over: HUNTINGTON CREEK

HUNTINGTON TWP JCT SR4006, Luzerne, PA

Built 2000 Load: 49.0 t ADT: 2,491

SR 4004

Good

Over: DUNLAP CREEK

GERMAN TOWNSHIP, Fayette, PA

Built 2000 Load: 49.0 t ADT: 334

PA TPK NB(TOLL 43)

Good

Over: GEORGES CK. AB RR

1.3MI N OF TOLLBOTH NB, Fayette, PA

Built 1999 Load: 49.0 t ADT: 4,443

PA TPK NB(TOLL 43)

Good

Over: T-343 BROWNFIELD RUN

4.3MI. S OF FAIRCHANCE, Fayette, PA

Built 1999 Load: 49.0 t ADT: 4,443

SR 0519

Good

Over: LITTLE CHARTIERS CREEK

NORTH STRABANE TWP., Washington, PA

Built 2000 Load: 49.0 t ADT: 9,812

PA 283; SR 0300

Good

Over: PA 741 LTL CONESTOGA CK

FLORYS MILL, Lancaster, PA

Built 2000 Load: 49.0 t ADT: 65,843

SR 0079

Good

Over: SR 0019

AMWELL TWP, Washington, PA

Built 2000 Load: 49.0 t ADT: 12,106

US 522

Good

Over: LITTLE TONOLOWAY CREEK

WARFORDSBURG, Fulton, PA

Built 2002 Load: 49.0 t ADT: 1,992

SR 99-I 99

Good

Over: T-361 AND TRIB SPRING CR

1 MI E OF STATE COLLEGE, Centre, PA

Built 2002 Load: 49.0 t ADT: 13,842

SR 99-I 99

Good

Over: BRICKER ROAD

1 1/4 MI S OF 150 INTERCH, Centre, PA

Built 2001 Load: 49.0 t ADT: 12,128

SR 99-I 99

Good

Over: BRICKER ROAD

1 1/4 MI S SR 150 INTERCH, Centre, PA

Built 2001 Load: 49.0 t ADT: 12,501

SR 99-I 99

Good

Over: SR 322WB SR 3007 & RAMPS

STATE COLLEGE, Centre, PA

Built 2002 Load: 49.0 t ADT: 13,665

SR3040 ST JOHNS RD

Good

Over: LONG RUN

BUTLER TWP .6 M W SR 3021, Luzerne, PA

Built 2002 Load: 49.0 t ADT: 1,786

SR 2003

Good

Over: TRIB TO ROARING CREEK

1 MILE SOUTH OF KULP, Columbia, PA

Built 2003 Load: 49.0 t ADT: 64

DENTS RUN ROAD

Good

Over: BELL DRAFT

3 MI WEST OF SR 555, Elk, PA

Built 2003 Load: 49.0 t ADT: 25

SR 35-PA 35

Good

Over: TRIB COCOLAMUS CREEK

2 MI NORTH EAST COCOLAMUS, Juniata, PA

Built 2004 Load: 49.0 t ADT: 3,817

ON TSR 430

Good

Over: LITTLE PLUM RUN

CHATHAM RUN, Clinton, PA

Built 2004 Load: 49.0 t ADT: 579

PA 394;SR 0394

Good

Over: BEAVER DAM CREEK

HUNTERSTOWN, Adams, PA

Built 2004 Load: 49.0 t ADT: 3,688

T-430 OLD PARK RD

Good

Over: HUNGRY RUN

225 FT NW OF FREEDOM AVE, Mifflin, PA

Built 2005 Load: 49.0 t ADT: 173

MILL STREET

Good

Over: LAUREL RUN CREEK

MILL ST OVER LAUREL RUN C, Luzerne, PA

Built 2002 Load: 49.0 t ADT: 3,094

SCOTT STREET

Good

Over: COAL BROOK

SCOTT ST. OVER COAL BROOK, Luzerne, PA

Built 2003 Load: 49.0 t ADT: 5,565

SR 15

Good

Over: SR 49

.2 M W OF LAWRENCEVILLE, Tioga, PA

Built 2005 Load: 49.0 t ADT: 4,180

SR 15 NB

Good

Over: SR 49

.2 M W OF LAWRENCEVILLE, Tioga, PA

Built 2005 Load: 49.0 t ADT: 4,912

SR 99-I 99

Good

Over: ACCESS ROAD

2 MI SOUTH PORT MATILDA, Centre, PA

Built 2004 Load: 49.0 t ADT: 6,583

SR 1009

Good

Over: HAWK RUN

HAWK RUN, Clearfield, PA

Built 2007 Load: 49.0 t ADT: 886

SR 2025 N.LIBERTY

Good

Over: LAKE BARMORE OUTLET

PINE TOWNSHIP, Mercer, PA

Built 2007 Load: 49.0 t ADT: 2,906

SR 15 NB

Good

Over: W. BR. SUSQUEHANNA RIVER

MARKET ST. WMSPT RIVER BR, Lycoming, PA

Built 2007 Load: 49.0 t ADT: 13,032

SR 522

Good

Over: Tr. to Middle Creek

Middleburg Boro, Snyder, PA

Built 2008 Load: 49.0 t ADT: 11,923

SR 15 NBL

Good

Over: UNNAMED TR TO TIOGA R.

3 MI NORTH OF TIOGA BORO, Tioga, PA

Built 2008 Load: 49.0 t ADT: 4,320

SR 0166

Good

Over: DUNLAP CREEK

2 Miles N. of SR 4008, Fayette, PA

Built 2009 Load: 49.0 t ADT: 3,764

SR 1013

Good

Over: TRIB TUB MILL RUN

1.7 MILE NE OF BREEZEWOOD, Bedford, PA

Built 2009 Load: 49.0 t ADT: 168

BUTCHER HILL ROAD

Good

Over: W.HICKORY CK.

HARMONY TWP., Forest, PA

Built 2009 Load: 49.0 t ADT: 178

OLD ROUTE 6

Good

Over: SCOTTS RUN

CONEWANGO TWP, Warren, PA

Built 2009 Load: 49.0 t ADT: 19

SR 49

Good

Over: Trib to Cowanesque River

0.5 miles West of Osceola, Tioga, PA

Built 2009 Load: 49.0 t ADT: 3,676

KELSO RD

Good

Over: N BRANCH OF ROBINSON RUN

150 NW OF SR 3108, Allegheny, PA

Built 2010 Load: 49.0 t ADT: 746

Old HBG Rd 3001

Good

Over: Trib Rock Cr

NE of Gettysburg, Adams, PA

Built 2010 Load: 49.0 t ADT: 3,874

SR 2014

Good

Over: BEAVERDAM BR JUNIATA RIV

HOLLIDAYSBURG BOROUGH, Blair, PA

Built 2010 Load: 49.0 t ADT: 2,060

Showing 18,751-18,800 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.