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

T-642 SMITH ROAD

Fair

Over: OVER LITTLE SUGAR BRANCH

2.7 MI. SW. FRENCHTOWN, Crawford, PA

Built 1955 Load: 32.7 t ADT: 150

T-387 BROWN HILL

Fair

Over: OVER CONNEAUT OUTLET CK.

2.5 MI. SE. CONNEAUT LK., Crawford, PA

Built 1988 Load: 32.7 t ADT: 250

T-402 PORTER ROAD

Fair

Over: OVER CONNEAUT CREEK

SUMMIT TOWNSHIP PORTER RD, Crawford, PA

Built 1995 Load: 32.7 t ADT: 250

WEST CENTER STREET

Fair

Over: OVER MILL RUN

CENTER STREET MEADVILLE, Crawford, PA

Built 1906 Load: 32.7 t ADT: 1,500

ARCH STREET

Fair

Over: OVER MILL RUN

ARCH ST. MEADVILLE CITY, Crawford, PA

Built 1970 Load: 32.7 t ADT: 4,280

DUTCH HILL R.T-576

Fair

Over: OVER HAMMOND RUN

DUTCH HILL RD. TITUSVILLE, Crawford, PA

Built 1992 Load: 32.7 t ADT: 150

US 15; SR 0015

Fair

Over: Cedar Run

N of Slate Hill Rd Exit, Cumberland, PA

Built 1956 Load: 32.7 t ADT: 89,416

PA 34; BALT. AVE.

Fair

Over: MOUNTAIN CREEK

MT HOLLY SPRINGS, Cumberland, PA

Built 1934 Load: 32.7 t ADT: 9,750

I-81 SB; SR 0081

Fair

Over: PA 233; SR 0233

NEWVILLE INTERCHANGE, Cumberland, PA

Built 1963 Load: 32.7 t ADT: 20,276

I-81 SB; SR 0081

Fair

Over: T-480; SHAGBARK LN

3 MI.S. OF CARLISLE, Cumberland, PA

Built 1963 Load: 32.7 t ADT: 20,276

SR 0581

Fair

Over: SR 1010 CARLISLE PIKE

581/11 @ Carlisle Pk, Cumberland, PA

Built 1995 Load: 32.7 t ADT: 31,030

PA 696; NEWBURG RD

Fair

Over: BURD RUN

0.5 MI N SHIPPENSBURG, Cumberland, PA

Built 1964 Load: 32.7 t ADT: 3,943

SR 4008 CENTER RD.

Fair

Over: DOUBLING GAP CREEK

0.3 MI.N.OF NEWVILLE, Cumberland, PA

Built 1926 Load: 32.7 t ADT: 569

PA TPK (I-76)

Fair

Over: WHISKEY RUN

UPPER MIFFLIN TWP, Cumberland, PA

Built 1938 Load: 32.7 t ADT: 21,102

PA TPK (I-76)

Fair

Over: BACK & CENTER CREEK

UPPER MIFFLIN TWP, Cumberland, PA

Built 1938 Load: 32.7 t ADT: 21,102

PA TPK (I-76)

Fair

Over: YELLOW BREECHES CREEK

LOWER ALLEN TWP, Cumberland, PA

Built 2001 Load: 32.7 t ADT: 25,229

MESSIAH COLLEGE RD

Fair

Over: NORFOLK SOUTHERN

MESSIAH ACCESS RD/N.S.RR, Cumberland, PA

Built 1984 Load: 32.7 t ADT: 2,600

RACE STREET T-546

Fair

Over: TRIB YELLOW BREECHES CR

0.25 MI S OF SR 174, Cumberland, PA

Built 1913 Load: 32.7 t ADT: 525

SPRING HOUSE ROAD

Fair

Over: MIDDLE SPRING CREEK

.3 MI.NW US 11 & PA 696, Cumberland, PA

Built 1973 Load: 32.7 t ADT: 1,800

U.S.11&15; SR 0011

Fair

Over: Juniata River;Norfolk So

NEAR AMITY HALL, Dauphin, PA

Built 1959 Load: 32.7 t ADT: 8,449

PA 39; SR 0039

Fair

Over: US 22; SR 0022

INTER OF US22 & PA39, Dauphin, PA

Built 1971 Load: 32.7 t ADT: 18,448

I-81 SB; SR 0081

Fair

Over: SR 2017

SHELLSVILLE, Dauphin, PA

Built 1966 Load: 32.7 t ADT: 25,383

I-83; SR 0083

Fair

Over: 17TH ST

SOUTH HARRISBURG, Dauphin, PA

Built 1961 Load: 32.7 t ADT: 81,885

US 209; SR 0209

Fair

Over: LITTLE WICONISCO CREEK

MILLERSBURG, Dauphin, PA

Built 1910 Load: 32.7 t ADT: 3,834

I-283; SR 0283

Fair

Over: LAUREL RUN

2 MI.N. HIGHSPIRE, Dauphin, PA

Built 1969 Load: 32.7 t ADT: 46,710

PA-849;SR0849

Fair

Over: Juniata River

N. DUNCANNON, Dauphin, PA

Built 1922 Load: 32.7 t ADT: 4,301

SR 1009 N.CROSS RD

Fair

Over: DEEP CREEK

1 MI. S. PILLOW, Dauphin, PA

Built 1985 Load: 32.7 t ADT: 1,163

SR 2007 S.DEODATE

Fair

Over: CONEWAGO CREEK

5 MI.S.E. OF MIDDLETOWN, Dauphin, PA

Built 1968 Load: 32.7 t ADT: 2,299

SR 2018

Fair

Over: SWATARA CREEK

HUMMELSTOWN BORO, Dauphin, PA

Built 1922 Load: 32.7 t ADT: 5,099

SR 3007

Fair

Over: I-83; SR 0083

19 ST CITY OF HARRISBURG, Dauphin, PA

Built 1961 Load: 32.7 t ADT: 8,494

SR 3012 EAST SPANS

Fair

Over: SUSQUEHANNA RIVER (EAST)

CITY OF HARRISBURG, Dauphin, PA

Built 1928 Load: 32.7 t ADT: 10,617

SR 3012

Fair

Over: US 322; SR 3001

DERRY ST. LAWNTON, Dauphin, PA

Built 1953 Load: 32.7 t ADT: 15,247

SR 3013

Fair

Over: I-83; SR 0083

29TH STREET OVER I-83, Dauphin, PA

Built 1961 Load: 32.7 t ADT: 11,404

SR 3013 29th St.

Fair

Over: NORFOLK SOUTHERN

29THSTPAXTANGBORO, Dauphin, PA

Built 1973 Load: 32.7 t ADT: 11,404

MACLAY STREET

Fair

Over: PAXTON CREEK

MACLAY ST IN HARRISBURG, Dauphin, PA

Built 1940 Load: 32.7 t ADT: 24,178

SR 4013

Fair

Over: RATTLING CREEK

1 MI. S. LYKENS, Dauphin, PA

Built 1937 Load: 32.7 t ADT: 341

T-602

Fair

Over: PA TPK (I-76)

CONEWAGO TWP, Dauphin, PA

Built 1949 Load: 32.7 t ADT: 200

LR 22010 SR2009

Fair

Over: PA TPK (I-76)

CONEWAGO TOWNSHIP, Dauphin, PA

Built 1950 Load: 32.7 t ADT: 540

63RD STREET

Fair

Over: NORFOLK STHRN. RUTHRFORD

OFF DERRY ST/RUTHFRD YARD, Dauphin, PA

Built 1985 Load: 32.7 t ADT: 4,000

INCINERATOR DRIVE

Fair

Over: SPRING CREEK

SPRING CR/INCINOR DR/HBG, Dauphin, PA

Built 1969 Load: 32.7 t ADT: 700

HEMLOCK ST.

Fair

Over: PAXTON CREEK

PAXTON CR/HEMLOCK ST/HBG, Dauphin, PA

Built 1908 Load: 32.7 t

LYME ALLEY

Fair

Over: PAXTON CREEK

PAXTON CR/LYME ALLEY/HBG, Dauphin, PA

Built 1930 Load: 32.7 t

SYCAMORE ST HARRI

Fair

Over: PAXTON CREEK

400"WOFCAMERON/PAXTON, Dauphin, PA

Built 1920 Load: 32.7 t ADT: 1,000

SR 8003 RAMP C

Fair

Over: I-81; SR 8003 RAMP B

INTER I81 & US22, Dauphin, PA

Built 1977 Load: 32.7 t ADT: 14,612

SR 8003 RAMP A

Fair

Over: SR 8003 RAMP C

INTER OF I81 & US22, Dauphin, PA

Built 1977 Load: 32.7 t ADT: 2,859

SR 8015 RAMP C

Fair

Over: AMTRAK NSRC PENNSY

SOUTH HARRISBURG, Dauphin, PA

Built 1982 Load: 32.7 t ADT: 7,315

SR 8015 RAMP A

Fair

Over: SR 8015 RAMP C FRONT ST

SOUTH HARRISBURG, Dauphin, PA

Built 1982 Load: 32.7 t ADT: 6,662

SR8015 EXIT RAMP D

Fair

Over: RP B; AMTRK PENNSY NFS

SOUTH HARRISBURG, Dauphin, PA

Built 1982 Load: 32.7 t ADT: 6,607

SR 8018; RAMP EF

Fair

Over: WET WEATHER STREAM

AIRPORT CONNECTOR&PA 230, Dauphin, PA

Built 1976 Load: 32.7 t ADT: 3,251

SR 8018; RAMP L

Fair

Over: PA 230 AMTRAK AIRPT. DR

1 MI. E. HIGHSPIRE, Dauphin, PA

Built 1976 Load: 32.7 t ADT: 3,740

Showing 4,301-4,350 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.