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

HOSTETTER ROAD

Fair

Over: SOUTH BR. CONEWAGO

1.5 MI.SW MCSHERRYSTOWN, Adams, PA

Built 1958 Load: 32.7 t ADT: 100

OLD RT. 15; T-602

Fair

Over: LATIMORE CREEK

2 NE YORK SPRG/LATIMOR CR, Adams, PA

Built 1920 Load: 32.7 t ADT: 375

CAMPGROUND ROAD

Fair

Over: HOSACK RUN

0.15 MI SW OF SR 233, Adams, PA

Built 1976 Load: 32.7 t ADT: 40

RT 0008 NB SB

Fair

Over: PINE CREEK

450S.OF SR 1013, Allegheny, PA

Built 1925 Load: 32.7 t ADT: 40,313

RT 0008 NB SB

Fair

Over: PINE CREEK NEAR FLOOD CH

NEAR INT WITH SAXONBURG B, Allegheny, PA

Built 1925 Load: 32.7 t ADT: 40,313

RT 0008 NB SB

Fair

Over: PINE CREEK

0.8 MI N OF SR 1013, Allegheny, PA

Built 1912 Load: 32.7 t ADT: 23,049

COUNTRY CLUB DR

Fair

Over: SR 0019

COUNTRY CLUB RD OVER SR19, Allegheny, PA

Built 1940 Load: 32.7 t ADT: 709

SAW MILL RUN BL

Fair

Over: SAW MILL RUN

19&51 SB @ W.END CIRCLE, Allegheny, PA

Built 1950 Load: 32.7 t ADT: 3,319

SR 0019 NB SB

Fair

Over: PINE CREEK

150 SOUTH OF PINE CR.RD., Allegheny, PA

Built 1940 Load: 32.7 t ADT: 12,514

US 0022 EB WB

Fair

Over: THOMPSON RUN

AT TR 286 EXIT RAMP, Allegheny, PA

Built 1943 Load: 32.7 t ADT: 44,760

US 0022 EB WB

Fair

Over: ABERS CREEK

NEAR TR 286 EXIT RAMP, Allegheny, PA

Built 1943 Load: 32.7 t ADT: 35,857

SR 28 NB

Fair

Over: LEXINGTON & DELAFIELD

O/DELAFIELD & LEXINGTON, Allegheny, PA

Built 1965 Load: 32.7 t ADT: 38,117

ALLEGHENY VALLE EX

Fair

Over: BULL CREEK

TARENTUM INTERCHANGE, Allegheny, PA

Built 1982 Load: 32.7 t ADT: 36,674

SR 0030 EB WB

Fair

Over: SR 2037

LR 1074 SB, Allegheny, PA

Built 1931 Load: 32.7 t ADT: 16,855

WALNUT STREET

Fair

Over: YOUGH CSX LOCAL STS

Boston Bridge, Allegheny, PA

Built 1931 Load: 32.7 t ADT: 12,916

SR 0048 WALNUT ST

Fair

Over: LONG RUN

0.1 MI S OF SR 0048, Allegheny, PA

Built 1934 Load: 32.7 t ADT: 8,278

CLAIRTON BL

Fair

Over: FALLEN TIMBER RUN

@ INT.W/ROBERTS HOLLOW RD, Allegheny, PA

Built 1948 Load: 32.7 t ADT: 18,567

CLAIRTON BLVD

Fair

Over: LEWIS RUN

1 MI.N.OF INT.W/LR 02182, Allegheny, PA

Built 1959 Load: 32.7 t ADT: 23,832

SR 51 NB SB

Fair

Over: OVER LEWIS RUN

ONE MILE N OF SR 2030, Allegheny, PA

Built 1960 Load: 32.7 t ADT: 23,832

CLAIRTON BLVD

Fair

Over: LEWIS RUN

100 FT SO COAL VALLEY RD, Allegheny, PA

Built 1935 Load: 32.7 t ADT: 23,832

CLAIRTON BLVD.

Fair

Over: LEBANON CHURCH RD

INTER. OF LEB.CHURCH RD, Allegheny, PA

Built 1939 Load: 32.7 t ADT: 27,346

CORAOPOLIS BLVD

Fair

Over: MONTOUR RUN

GROVETON INTER 79 & 51, Allegheny, PA

Built 1973 Load: 32.7 t ADT: 10,071

STOOPS FERRY RD

Fair

Over: NARROWS RUN

@ YAMAHA / SUZUKI, Allegheny, PA

Built 1962 Load: 32.7 t ADT: 28,421

CROSS ST

Fair

Over: SAW MILL RUN

WEST END CIRCLE, Allegheny, PA

Built 1929 Load: 32.7 t ADT: 21,335

SR 0065 SH

Fair

Over: TUNNEL REEDSDALE- Ridge

REEDSDALE RP. TO RIDGE AV, Allegheny, PA

Built 1968 Load: 32.7 t ADT: 39,381

RT 0019 SB

Fair

Over: Ramp H (8055)

TR 19-65 SB OVER RP.H, Allegheny, PA

Built 1969 Load: 32.7 t ADT: 9,125

OHIO RIVER BL

Fair

Over: FOREST AVE.

2 MI.S.E.OF SR 0079, Allegheny, PA

Built 1930 Load: 32.7 t ADT: 21,180

OHIO RIVER BL

Fair

Over: TOMS RUN

KILBUCK TWP. DIXMONT HOSP, Allegheny, PA

Built 1931 Load: 32.7 t ADT: 24,650

OHIO RIVER BL

Fair

Over: GLENFIELD ROAD

1/4 MI. S.E. OF SR 0079, Allegheny, PA

Built 1975 Load: 32.7 t ADT: 11,649

OHIO RIVER BL

Fair

Over: KILBUCK RUN

@ GLENFIELD I79 INTER-X, Allegheny, PA

Built 1941 Load: 32.7 t ADT: 11,649

OHIO RIVER BL

Fair

Over: FERRY STREET

1/2 MI. N.W. OF SR 4025, Allegheny, PA

Built 1931 Load: 32.7 t ADT: 18,201

OHIO RIVER BL

Fair

Over: LITTLE SEWICKLEY CRK

100 S.E. OF SR 4032, Allegheny, PA

Built 1937 Load: 32.7 t ADT: 18,201

OHIO RIVER BLVD

Fair

Over: BIG SEWICKLEY CREEK

0.1 MI NW OF CROSS ST, Allegheny, PA

Built 1946 Load: 32.7 t ADT: 18,201

RAYMOND SHAFER HW

Fair

Over: MOON RUN

I-79 NB AT TURN-AROUND, Allegheny, PA

Built 1971 Load: 32.7 t ADT: 44,704

RAYMOND SHAFER HW

Fair

Over: SR 0051 AT GROVETON

GROVETON-I79 SB OVER SR51, Allegheny, PA

Built 1974 Load: 32.7 t ADT: 21,929

RAYMOND SHAFER HWY

Fair

Over: SR 0279 SB

I-79 N.B. OVER I-279 S.B., Allegheny, PA

Built 1973 Load: 32.7 t ADT: 30,977

RAYMOND SHAFER HW

Fair

Over: SR 0019

I-79 SB OVER SR 19, Allegheny, PA

Built 1975 Load: 32.7 t ADT: 36,373

SANDY CREEK ROAD

Fair

Over: SANDY CREEK

200 NORTH OF SR 2058, Allegheny, PA

Built 1950 Load: 32.7 t ADT: 13,552

5th AVENUE

Fair

Over: CROOKED RUN

200S. OF S.INT.W/SR2037, Allegheny, PA

Built 1950 Load: 32.7 t ADT: 21,021

RAYMOND E WILT HW

Fair

Over: BEAR RUN

1000 S.E. OF SR 4022, Allegheny, PA

Built 1987 Load: 32.7 t ADT: 42,806

GOLDEN MILE HW

Fair

Over: ABERS CREEK

AT TR 286 AND TR 22 INT, Allegheny, PA

Built 1952 Load: 32.7 t ADT: 17,806

GOLDEN MILE HY

Fair

Over: ABERS CREEK

3200N.E. OF SR 0022, Allegheny, PA

Built 1952 Load: 32.7 t ADT: 17,806

BULL CREEK RD

Fair

Over: LITTLE BULL CREEK

@ INTER.W/PLEASANT AVE., Allegheny, PA

Built 1982 Load: 32.7 t ADT: 30,313

PENN LINCOLN PKWY

Fair

Over: RAMP B (BATES ST)

BATES ST. INTERCHANGE, Allegheny, PA

Built 1952 Load: 32.7 t ADT: 67,835

PARKWAY EAST

Fair

Over: BRADDOCK AVE

PARKWAY EAST-BRADDOCK AVE, Allegheny, PA

Built 1951 Load: 32.7 t ADT: 71,265

LAUREL ST

Fair

Over: PARKWAY EAST

3/4 MI. WEST OF SR 2051, Allegheny, PA

Built 1951 Load: 32.7 t ADT: 438

EDGEWOOD AVENUE

Fair

Over: 376 EB WB

EDGEWOOD AVE.O/PARKWAY, Allegheny, PA

Built 1951 Load: 32.7 t ADT: 7,037

CHESTNUT ST

Fair

Over: LR 763 906+78

CHESTNUT O/PARKWAY EAST, Allegheny, PA

Built 1950 Load: 32.7 t ADT: 214

PENN LINCOLN PY

Fair

Over: SR 8012-RAMP A

WILKINSBURG INTERCHANGE, Allegheny, PA

Built 1950 Load: 32.7 t ADT: 54,792

PENN LINCOLN PY

Fair

Over: LR 763-RAMP G

OVER RAMP G WILKINSBURG, Allegheny, PA

Built 1950 Load: 32.7 t ADT: 54,792

Showing 3,901-3,950 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.