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

I-579 NB

Fair

Over: SR28 8108 EAST OHIO ST.

Vets Bridge N. Appr, Allegheny, PA

Built 1988 Load: 32.7 t ADT: 31,778

RIVER ROAD

Fair

Over: LOBBS RUN

100 FT NE OF SR 3021, Allegheny, PA

Built 1952 Load: 32.7 t ADT: 5,993

STATE STREET

Fair

Over: PETERS CREEK

0.5 MI S OF 885, Allegheny, PA

Built 1935 Load: 32.7 t ADT: 6,888

UNION AV

Fair

Over: BR.ROBINSON RUN

@ INTERS.W\SR 3048, Allegheny, PA

Built 1925 Load: 32.7 t ADT: 8,632

BATEMAN ROAD

Fair

Over: N. BRA. OF ROBINSON RUN

300 FT N OF SR 3108, Allegheny, PA

Built 1943 Load: 32.7 t ADT: 2,713

PITTSBURGH STREET

Fair

Over: SHOOPS RUN

0.5 MI E OF PILLOW AVE, Allegheny, PA

Built 1920 Load: 32.7 t ADT: 12,231

SEVENTH AVE

Fair

Over: BULL CREEK

AT APPRCH TO TARENTUM BR, Allegheny, PA

Built 1895 Load: 32.7 t ADT: 9,142

BURCHFIELD RD

Fair

Over: PINE CREEK

SHALER TWP.OVER PINE CR., Allegheny, PA

Built 1915 Load: 32.7 t ADT: 2,723

BURTNER ROAD

Fair

Over: LITTLE BULL CREEK

300 SE OF SR 0028, Allegheny, PA

Built 1970 Load: 32.7 t ADT: 10,919

HOWES RUN RD.

Fair

Over: HOWES RUN

1850 N.E. OF SR 1034, Allegheny, PA

Built 1915 Load: 32.7 t ADT: 577

BULL CREEK RD

Fair

Over: HOWES RUN

150 S.E. OF SR 1033, Allegheny, PA

Built 1930 Load: 32.7 t ADT: 2,964

BULL CREEK RD

Fair

Over: BULL CREEK

2800 NORTH TWP. RD. 772, Allegheny, PA

Built 1922 Load: 32.7 t ADT: 2,964

LOVEDALE RD

Fair

Over: WYLIE RUN

238S.W.OF LIBERTY WAY, Allegheny, PA

Built 1972 Load: 32.7 t ADT: 7,888

ELIZABETH RD

Fair

Over: BR.OF BECKETS RUN

1600NORTH OF SR 0136, Allegheny, PA

Built 1952 Load: 32.7 t ADT: 259

BOYDS HOLLOW ROAD

Fair

Over: BOYDS HOLLOW RUN

.2 MI SW OF SR 2017, Allegheny, PA

Built 1936 Load: 32.7 t ADT: 634

PINEVIEW DR

Fair

Over: DOUGLAS RUN

@INTER.W/ROUND HILL RD, Allegheny, PA

Built 1940 Load: 32.7 t ADT: 1,625

BEUNA VISTA RD

Fair

Over: WILDCAT RUN

NEAR WILDCAT ROAD, Allegheny, PA

Built 1981 Load: 32.7 t ADT: 1,847

DOUGLASS RUN RD

Fair

Over: DOUGLAS RUN

NEAR WESTMORELAND CO., Allegheny, PA

Built 1986 Load: 32.7 t ADT: 4,176

BROUGHTON LIBRARY

Fair

Over: LICK RUN

1 1/2 MILES WEST OF SR 51, Allegheny, PA

Built 1920 Load: 32.7 t ADT: 29,917

RODI ROAD

Fair

Over: CHALFONT RUN

@ INTER W/ THOMPSON RN RD, Allegheny, PA

Built 1967 Load: 32.7 t ADT: 4,548

THOMPSON RUN RD

Fair

Over: LEAK RUN

@ INTERSECTION W/SR 2261, Allegheny, PA

Built 1916 Load: 32.7 t ADT: 5,157

OLD FRANKSTOWN RD

Fair

Over: PIERSONS RUN

350 NW PIERSON RUN RD., Allegheny, PA

Built 1959 Load: 32.7 t ADT: 5,010

FRANKSTOWN RD

Fair

Over: ABERS CREEK

300 EAST OF SR 0286, Allegheny, PA

Built 1974 Load: 32.7 t ADT: 5,438

ALLEGHENY RIVER BL

Fair

Over: SANDY CREEK

300 NORTHEAST OF SR 0130, Allegheny, PA

Built 1931 Load: 32.7 t ADT: 12,459

NEW TEXAS RD

Fair

Over: BR.LITTLE PLUM CRK.

ABOUT 1/4 MI. NW OF 2076, Allegheny, PA

Built 1985 Load: 32.7 t ADT: 6,265

NEW TEXAS RD

Fair

Over: LITTLE PLUM CREEK

100S.E.OF INTER.W/2086, Allegheny, PA

Built 1941 Load: 32.7 t ADT: 6,265

OLD LEECHBURG ROAD

Fair

Over: BR.LITTLE PLUM CREEK

@ INT W/ SR 2075, Allegheny, PA

Built 1900 Load: 32.7 t ADT: 4,194

LEECHBURG RD

Fair

Over: ABANDONED B&LE RR TRACK

240W.OF TURNPIKE, Allegheny, PA

Built 1936 Load: 32.7 t ADT: 4,065

LEECHBURG RD

Fair

Over: LITTLE PLUM CREEK

170W.OF TURNPIKE, Allegheny, PA

Built 1950 Load: 32.7 t ADT: 4,065

FORWARD AVE

Fair

Over: BEECHWOOD BLVD

0.1 NE OF BEECHWOOD BLVD, Allegheny, PA

Built 1952 Load: 32.7 t ADT: 6,915

MCLAUGHLIN RUN RD

Fair

Over: MCLAUGHLIN RUN

@ INTER.WITH SR 0019, Allegheny, PA

Built 1940 Load: 32.7 t ADT: 15,764

STEWART ROAD

Fair

Over: PINEY FORK CREEK

250 N OF PINEY FORK RD, Allegheny, PA

Built 1930 Load: 32.7 t ADT: 1,637

WALTON RD

Fair

Over: LOBBS RUN

250N.W.OF SR 0837, Allegheny, PA

Built 1962 Load: 32.7 t ADT: 567

WALTON RD.

Fair

Over: LOBBS RUN

0.5 MI. N.W. OF SR 0837, Allegheny, PA

Built 1925 Load: 32.7 t ADT: 567

NOBLESTOWN RD

Fair

Over: N.BRANCH ROBINSON RUN

INTER.W/ SR 0978, Allegheny, PA

Built 1921 Load: 32.7 t ADT: 1,677

WEST LIBERTY AVE

Fair

Over: SAW MILL RUN

@ S END OF LIBERTY TUNNEL, Allegheny, PA

Built 1926 Load: 32.7 t ADT: 42,292

MCCLAREN ROAD

Fair

Over: BRANCH OF MONTOUR RUN

150N.E.STUB.PIKE-ENLOW R, Allegheny, PA

Built 1948 Load: 32.7 t ADT: 5,907

FLAUGHERTY RUN RD

Fair

Over: FLAUGHERTY RUN

1/4 MI. E. OF TWP. RD.114, Allegheny, PA

Built 1925 Load: 32.7 t ADT: 6,031

GLASS RUN RD

Fair

Over: GLASS RUN

NEAR GLENWOOD INTERCHANGE, Allegheny, PA

Built 1965 Load: 32.7 t ADT: 6,305

MCKEE RD

Fair

Over: N.BR.ROBINSON RUN

@ INTER.W/ROBB HILL RD, Allegheny, PA

Built 1962 Load: 32.7 t ADT: 12,490

MCKEES ROCKS BR

Fair

Over: CHAMBERS STREET

OVER CHAMBERS ST., Allegheny, PA

Built 1931 Load: 32.7 t ADT: 27,207

MCKEES ROCKS BR

Fair

Over: MUNSON AVE.

MUNSON AVE., Allegheny, PA

Built 1931 Load: 32.7 t ADT: 30,779

MCKEES ROCKS BR

Fair

Over: HELEN STREET

OVER HELEN STREET, Allegheny, PA

Built 1931 Load: 32.7 t ADT: 27,207

WEST CARSON ST

Fair

Over: SAW MILL RUN

PGH.@ WEST END CIRCLE, Allegheny, PA

Built 1910 Load: 32.7 t ADT: 13,534

EVERGREEN RD

Fair

Over: GIRTYS RUN

MILLVALE @ 28 NB OFF RAMP, Allegheny, PA

Built 1960 Load: 32.7 t ADT: 10,069

EVERGREEN ROAD

Fair

Over: GIRTYS RUN

AT INT NORTH AVE MILLVALE, Allegheny, PA

Built 1932 Load: 32.7 t ADT: 11,523

BABCOCK BLVD

Fair

Over: GIRTYS RUN

0.3 MI. N.W. OF SR 4002, Allegheny, PA

Built 1931 Load: 32.7 t ADT: 12,681

BABCOCK BLVD

Fair

Over: GIRTYS RUN

100 S.E. OF SHAFER RD., Allegheny, PA

Built 1930 Load: 32.7 t ADT: 12,681

ROCHESTER RD.

Fair

Over: LOWRIES RUN

3000 NORTH OF SR 4022, Allegheny, PA

Built 1941 Load: 32.7 t ADT: 5,431

UNION AV

Fair

Over: I-279 NB&SB

UNION AVE. OVER I-279, Allegheny, PA

Built 1987 Load: 32.7 t ADT: 9,229

Showing 3,951-4,000 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.