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

ASHMEAD ROAD

Fair

Over: SEPTA (NEWTOWN BR); CSX

Montco/Phila Line 3481-D2, Montgomery, PA

Built 1936 Load: 52.6 t ADT: 15,733

MIDDLE CREEK ROAD

Fair

Over: SWAMP CREEK

350FT NE OF SR73 2915-F10, Montgomery, PA

Built 1924 Load: 52.6 t ADT: 250

PA TPK (I-276)

Fair

Over: T-343 BUTLER PIKE

EAST OF NORRISTOWN INTG, Montgomery, PA

Built 1954 Load: 52.6 t ADT: 73,197

SR 22 (LR 773)

Fair

Over: SR 248 (LR 175)

25TH ST.INTERCHANGE, Northampton, PA

Built 1954 Load: 52.6 t ADT: 33,325

SR 2005

Fair

Over: I-78(TOLL RD.DRJTBC)

MORGAN HILL ROAD, Northampton, PA

Built 1985 Load: 52.6 t ADT: 9,703

SANDT ROAD

Fair

Over: Trib to Ltl Bushkill Crk

0.5 EAST OF SR 1005, Northampton, PA

Built 1968 Load: 52.6 t ADT: 250

CHRISTIAN SPRINGS

Fair

Over: BRANCH OF MONOCACY CREEK

PA 248 / 946 INTERSECTION, Northampton, PA

Built 1985 Load: 52.6 t ADT: 150

US 22

Fair

Over: DELAWARE RIVER

CITY OF EASTON, Northampton, PA

Built 1938 Load: 52.6 t ADT: 34,700

PA 849; SR 0849

Fair

Over: US 11; SR 0011

1MI WEST OF DUCANNON, Perry, PA

Built 1959 Load: 52.6 t ADT: 1,484

SR 1019

Fair

Over: N.BR.COWANESQUE RIVER

HARRISON VALLEY, Potter, PA

Built 1990 Load: 52.6 t ADT: 474

SR 4025

Fair

Over: HEMLOCK HOLLOW RUN

OSWAYO, Potter, PA

Built 1960 Load: 52.6 t ADT: 74

PA 281

Fair

Over: LAUREL HILL CREEK

.2 MI.N.OF URSINA BORO, Somerset, PA

Built 1994 Load: 52.6 t ADT: 1,495

SR 4006

Fair

Over: QUEMAHONING CREEK

ACOSTA, Somerset, PA

Built 1915 Load: 52.6 t ADT: 524

T733 KEAFER HILL R

Fair

Over: BENS CREEK

2.1 MI.N.OF THOMAS MILLS, Somerset, PA

Built 1900 Load: 52.6 t ADT: 150

SR 0367 TR 367

Fair

Over: TUSCARORA CREEK

AUBURN TWP 200 S SR 3004, Susquehanna, PA

Built 1965 Load: 52.6 t ADT: 368

SR 1001

Fair

Over: BUFFALO CREEK

VILLAGE OF MAZEPPA, Union, PA

Built 1973 Load: 52.6 t ADT: 1,052

SR 3007

Fair

Over: BUFFALO CREEK

1.51 MI N OF MIFFLINBURG, Union, PA

Built 1972 Load: 52.6 t ADT: 5,212

SR 0231

Fair

Over: ROCKY RUN

EAST FINLEY TOWNSHIP, Washington, PA

Built 1929 Load: 52.6 t ADT: 429

VANDALE DR-TWP 675

Fair

Over: CHARTIERS CREEK

MCGOVERN TWEEN SR1009/I79, Washington, PA

Built 1977 Load: 52.6 t ADT: 300

SR 1022

Fair

Over: CRABTREE CREEK

SALEM TOWNSHIP, Westmoreland, PA

Built 1966 Load: 52.6 t ADT: 189

SR 2008

Fair

Over: FOURMILE RUN

COOK TOWNSHIP, Westmoreland, PA

Built 1960 Load: 52.6 t ADT: 115

SR 0006 TR 6

Fair

Over: TUNKHANNOCK CREEK

TUNKHNNCK TWP .3M E TR 92, Wyoming, PA

Built 1954 Load: 52.6 t ADT: 7,292

SR 3007 VOSBURG RD

Fair

Over: READING BLUMNT&NORTHERN

WASHINGTON TWP 1.7 MW TR6, Wyoming, PA

Built 1920 Load: 52.6 t ADT: 133

SCHUYLKILL EXWY.WB

Fair

Over: LR 67058 RAMP B

CTY.LINE AVE.INTG.3479J10, Philadelphia, PA

Built 1972 Load: 52.6 t ADT: 63,820

SCHUYLKILL EXPWAY.

Fair

Over: MONTGOMERY DRIVE

MONTG.DRIVE INTER.3589G03, Philadelphia, PA

Built 1953 Load: 52.6 t ADT: 109,240

INTERSTATE 95 N.B.

Fair

Over: BROWN STREET

.1MI.N.SPG.GRD.ST.3590H07, Philadelphia, PA

Built 1975 Load: 52.6 t ADT: 80,788

Seventeenth Street

Fair

Over: SEPTA

at Indiana Avenue 3590E1, Philadelphia, PA

Built 1988 Load: 52.6 t ADT: 9,700

RAMPS B AND B-1

Fair

Over: NEILL DRIVE

ROOSEVELT EXPWY.3479-J09, Philadelphia, PA

Built 1971 Load: 52.6 t ADT: 19,899

RAMP NV SB TO VINE

Fair

Over: BROWN STREET

VINE ST INTERC.3590H07, Philadelphia, PA

Built 1975 Load: 52.6 t ADT: 15,019

SR0022 EB&WB

Fair

Over: SR0056

ARMAGH NO.1, Indiana, PA

Built 1998 Load: 52.6 t ADT: 12,742

SR 3012 CRSSGVILLE

Fair

Over: OVER CUSSEWAGO CK.W.BR.

ELK CREEK TOWNSHIP, Erie, PA

Built 1999 Load: 52.6 t ADT: 548

BARTOLI LANE

Fair

Over: SHICKSHINNY CREEK

0.4 MI WEST OF SR 239, Luzerne, PA

Built 1930 Load: 52.6 t ADT: 1,105

MAGARO ROAD

Fair

Over: TRIB.CONODOGUINET CREEK

.2W FRVW/TR.CONDGNT CREEK, Cumberland, PA

Built 2003 Load: 52.6 t ADT: 300

SR4023

Fair

Over: LIMESTONE RUN

TARRTOWN, Armstrong, PA

Built 2005 Load: 52.6 t ADT: 1,355

SR0219

Fair

Over: LITTLE TOBY CREEK

CLARK STREET, Jefferson, PA

Built 2008 Load: 52.6 t ADT: 7,004

Grims Mill Road

Fair

Over: Ironstone Creek

N. of Gablesville, Berks, PA

Built 1983 Load: 52.6 t ADT: 100

SR 14

Fair

Over: WOLFE CREEK

2 MI. N.COLUMBIA X-ROADS, Bradford, PA

Built 1957 Load: 53.1 t ADT: 1,523

MORSE AVENUE

Fair

Over: LACKAWANNA RIVER

100 FT WEST OF SR 171, Lackawanna, PA

Built 1916 Load: 53.1 t ADT: 170

RT 0022 EB WB

Fair

Over: SR 0978

OVER US 30 & TR 978, Allegheny, PA

Built 1966 Load: 53.5 t ADT: 22,115

ALLEGHENY VAL EX

Fair

Over: CRAWFORD RUN ROAD

2.5 MI S OF SR 28 EXIT 14, Allegheny, PA

Built 1976 Load: 53.5 t ADT: 20,245

CLAIRTON BLVD

Fair

Over: LEWIS RUN

NEAR SR 2030, Allegheny, PA

Built 1959 Load: 53.5 t ADT: 23,832

PENN LINCOLN PW

Fair

Over: WHISKEY RUN BELL RD

BELOW N&W RR TRESTLE, Allegheny, PA

Built 1953 Load: 53.5 t ADT: 76,172

DAYS RUN ROAD

Fair

Over: DAYS RUN

0.7 MI N OF BAILEYS RUN R, Allegheny, PA

Built 1953 Load: 53.5 t ADT: 497

MARKET ST

Fair

Over: I-376(WB) FORT PITT BLVD

121 MARKET ST BRIDGE, Allegheny, PA

Built 1940 Load: 53.5 t ADT: 2,824

BIG BEAVER BLVD

Fair

Over: SERVICE RD WALLACE RUN

0.1 MI N OF SR 551, Beaver, PA

Built 1951 Load: 53.5 t ADT: 11,613

AMERICAN SCHOOL RD

Fair

Over: CAMP RUN

004025 1300 E/N CAMP RUN, Beaver, PA

Built 1887 Load: 53.5 t ADT: 80

I-99 / US 220 SBL

Fair

Over: SR 1001/BUSINESS US 220

.5 MI.S.OF ALTOONA, Blair, PA

Built 1984 Load: 53.5 t ADT: 14,956

SR 1038

Fair

Over: OVER WAPPASENING CK

2 MI W OF WARREN CENTER, Bradford, PA

Built 1920 Load: 53.5 t ADT: 577

BRIDGETOWN PIKE

Fair

Over: NORFOLK SOUTHERN/3261-F3

NEAR ROUTE 213 36E11, Bucks, PA

Built 1987 Load: 53.5 t ADT: 4,040

COUNTY LINE ROAD

Fair

Over: SOUTHAMPTON CREEK

2MI.FEASTERVILLE 35A12, Bucks, PA

Built 1966 Load: 53.5 t ADT: 22,231

Showing 10,951-11,000 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.