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-315 JO JO ROAD

Fair

Over: WIND RUN

300 EAST KANE/MOISER RD, McKean, PA

Built 1974 Load: 45.4 t ADT: 50

SR 80 WB

Fair

Over: OVER WOLF CREEK

WOLF CREEK TOWNSHIP, Mercer, PA

Built 1965 Load: 45.4 t ADT: 8,040

BRIDGE 650 T-895

Fair

Over: OVER FRENCH CREEK BRANCH

FRENCH CREEK TWP., Mercer, PA

Built 1905 Load: 45.4 t ADT: 20

BRIDGE 711 T-320

Fair

Over: OVER BOOTH RUN

S.BARRY RD W.SALEM TWP., Mercer, PA

Built 1990 Load: 45.4 t ADT: 66

RAMP C. SR 80WB

Fair

Over: OVER HOGBACK RUN

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 Load: 45.4 t ADT: 2,061

SR 103-PA 103

Fair

Over: MINEHART RUN

GRANVILLE, Mifflin, PA

Built 1958 Load: 45.4 t ADT: 2,089

SR 1003

Fair

Over: HAVICE CREEK

SIGLERVILLE, Mifflin, PA

Built 1984 Load: 45.4 t ADT: 386

PA 191 (LR 171)

Fair

Over: MILL CREEK

MOUNTAIN HOME, Monroe, PA

Built 1919 Load: 45.4 t ADT: 358

SR 1017(LR 45070)

Fair

Over: GRISCOM CREEK

VILLAGE OF BUCKHILL FALLS, Monroe, PA

Built 1956 Load: 45.4 t ADT: 1,002

GOLF COURSE RD

Fair

Over: LAKE CREEK

SAYLORSBURG, Monroe, PA

Built 1930 Load: 45.4 t ADT: 50

SR8004(LR1002RAMP)

Fair

Over: I-380 SB

I-80 I-380 INTERCHANGE, Monroe, PA

Built 1964 Load: 45.4 t ADT: 2,453

GRAVEL PIKE

Fair

Over: SWAMP CREEK

1MI.S.ZIEGLERSVIL. 3029E7, Montgomery, PA

Built 1947 Load: 45.4 t ADT: 9,235

SCHUYLKILL EXPWAY.

Fair

Over: LR46138&ARROWMINK CREEK

W. CONSHO. 3368-A10, Montgomery, PA

Built 1951 Load: 45.4 t ADT: 85,964

ROUTE 100

Fair

Over: HIGH ST. NORFOLK SOUTH.

POTTSTOWN 3138E01, Montgomery, PA

Built 1954 Load: 45.4 t ADT: 34,085

OLD YORK ROAD

Fair

Over: BRANCH PENNYPACK CREEK

N.PENA TRNPK 3259C04, Montgomery, PA

Built 1968 Load: 45.4 t ADT: 19,716

COUNTY LINE EXPWAY

Fair

Over: TROUT CREEK

UPP MERION 27J11/3366D5, Montgomery, PA

Built 1967 Load: 45.4 t ADT: 111,122

SWAMP CREEK ROAD

Fair

Over: UNAMI CREEK

1MI.N. PA 63 2917J07, Montgomery, PA

Built 1892 Load: 45.4 t ADT: 223

LIMEKILN PIKE

Fair

Over: ROCK CREEK 3370E08

1MI. N CHELTENHAM, Montgomery, PA

Built 1841 Load: 45.4 t ADT: 10,020

BELMONT AVENUE

Fair

Over: GULLEY RUN

BELMONT HILLS 36F12, Montgomery, PA

Built 1953 Load: 45.4 t ADT: 17,721

NEIFFER ROAD

Fair

Over: SWAMP CREEK

W OF ZIEGLERV 3028H7, Montgomery, PA

Built 1966 Load: 45.4 t ADT: 1,981

CAMP HILL ROAD

Fair

Over: PINE RUN

1 M. SW Rte 2017 3258-A9, Montgomery, PA

Built 1970 Load: 45.4 t ADT: 3,000

QUARRY ROAD(T419)

Fair

Over: WEST SKIPPACK CREEK

.20MI N OF SR1015 3142-J1, Montgomery, PA

Built 1928 Load: 45.4 t ADT: 450

PA TPK (RAMPS A&B)

Fair

Over: PA TPK (I-276)

WILLOW GROVE INTERCHANGE, Montgomery, PA

Built 1983 Load: 45.4 t ADT: 23,220

RAMP R(76E TO 476N

Fair

Over: RAMP S

CONSHOHOCKEN INTER.35D04, Montgomery, PA

Built 1975 Load: 45.4 t ADT: 5,764

I-78 WB(LR 1045)

Fair

Over: PA 412 & RAMP(LR 530)

EXIT 67(21)PA 412, Northampton, PA

Built 1988 Load: 45.4 t ADT: 27,603

FRONT ST

Fair

Over: SILVER CREEK

SOUTH OF WATER ST, Northampton, PA

Built 1937 Load: 45.4 t ADT: 2,200

PA 44

Fair

Over: DRY RUN

0.5 MI N OF WATSONTOWN, Northumberland, PA

Built 1962 Load: 45.4 t ADT: 3,171

SR 0044

Fair

Over: OVER DELAWARE RUN

0.5 MI W OF DEWART, Northumberland, PA

Built 1958 Load: 45.4 t ADT: 3,688

I-80 WB

Fair

Over: OVER SR 1019 & MUDDY RUN

2 MI NE OF MILTON, Northumberland, PA

Built 1962 Load: 45.4 t ADT: 13,142

T-473 (FOYE ROAD)

Fair

Over: LITTLE SHAMOKIN CREEK

SEVEN POINTS, Northumberland, PA

Built 1995 Load: 45.4 t ADT: 150

WILLOW STREET

Fair

Over: CARBON RUN

SHAMOKIN CITY, Northumberland, PA

Built 1935 Load: 45.4 t ADT: 300

SR 3006

Fair

Over: HOUSTONS RUN

3 MI. S.W. OF BLAIN, Perry, PA

Built 1930 Load: 45.4 t ADT: 108

DOBBS RD

Fair

Over: BIG BUFFALO CREEK

3 MI.NE KISTLER B.BUFFALO, Perry, PA

Built 1990 Load: 45.4 t ADT: 50

MCCABE ROAD

Fair

Over: MCCABE RUN

1 SW BRDGPRT. MCCABE RUN, Perry, PA

Built 1960 Load: 45.4 t ADT: 225

MCCABE ROAD

Fair

Over: MCCABE RUN

3.3 SW SR 74; MCCABE RUN, Perry, PA

Built 1950 Load: 45.4 t ADT: 175

SR 0191 TR 191

Fair

Over: TRIBUTARY TO TAYLOR CRK

GREENE TWP 100 S SR 3008, Pike, PA

Built 1957 Load: 45.4 t ADT: 377

SR 1003

Fair

Over: GENESEE FORK

2 MI S LOUCKS MILLS, Potter, PA

Built 1966 Load: 45.4 t ADT: 179

SR 1009

Fair

Over: LUDINGTON RUN

2 MI N NEWFIELD, Potter, PA

Built 1910 Load: 45.4 t ADT: 86

T-400 PROUTY ROAD

Fair

Over: AYERS HILL BRANCH

7 MI NE COSTELLO, Potter, PA

Built 1961 Load: 45.4 t ADT: 100

US 209 (LR 199)

Fair

Over: WEST BR. SCHUYLKILL RIVE

AT JCT.PA 901, Schuylkill, PA

Built 1930 Load: 45.4 t ADT: 16,267

MILL ROAD

Fair

Over: LITTLE MAHANTANGO CREEK

T-472 U.MAHANTANGO TWP., Schuylkill, PA

Built 1973 Load: 45.4 t ADT: 500

T-460 MULLS ROAD

Fair

Over: OVER MIDDLE CREEK

2.5 MI.SW OF SELINGSGROVE, Snyder, PA

Built 1953 Load: 45.4 t ADT: 100

US 219 SBL

Fair

Over: PA 281

OVER TR 281, Somerset, PA

Built 1973 Load: 45.4 t ADT: 5,793

PA 601

Fair

Over: PA 56

PAINT BORO., Somerset, PA

Built 1960 Load: 45.4 t ADT: 2,578

PA 985

Fair

Over: TRIB.TO BENS CREEK

THOMAS MILLS, Somerset, PA

Built 1921 Load: 45.4 t ADT: 1,186

PA 985

Fair

Over: NORTH FORK OF BENS CREEK

SULPHUR SPRINGS, Somerset, PA

Built 1922 Load: 45.4 t ADT: 1,696

SR 1012

Fair

Over: POKEY RUN

POKEYTOWN, Somerset, PA

Built 1915 Load: 45.4 t ADT: 160

SR 1033

Fair

Over: ROARING FORK CREEK

4 MI.SE. OF WINDBER, Somerset, PA

Built 1978 Load: 45.4 t ADT: 215

SR 2016

Fair

Over: CASSELMAN RIVER

ROCKWOOD BORO., Somerset, PA

Built 1992 Load: 45.4 t ADT: 1,518

SR 3015

Fair

Over: W.BR.COXES CREEK

2 MI.S.OF SOMERSET, Somerset, PA

Built 1998 Load: 45.4 t ADT: 2,741

Showing 9,501-9,550 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.