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

SR 2023(LR 197)

Fair

Over: LITTLE MANATAWNY CR

@ OLDSTATE RD.(T-454), Berks, PA

Built 1926 Load: 23.6 t ADT: 1,564

T-666 SWAMP CK RD.

Fair

Over: SWAMP CREEK

NEW BERLINVILLE BRIDGE, Berks, PA

Built 1976 Load: 23.6 t ADT: 1,816

CHEESE LANE

Fair

Over: NO. BRANCH MILL CREEK

EAST OF JALAPPA, Berks, PA

Built 1968 Load: 23.6 t ADT: 75

US 22 WBL

Fair

Over: SR 8004 (22 / 764 RAMPS)

1.5 MI.W.OF ALTOONA, Blair, PA

Built 1982 Load: 23.6 t ADT: 9,098

SR 3012

Fair

Over: BLAIR GAP RUN

MULE SHOE STATION, Blair, PA

Built 1930 Load: 23.6 t ADT: 4,903

T473 N. Eighth St

Fair

Over: LITTLE JUNIATA RIVER

JUNIATA 8TH ST.TO SR4019, Blair, PA

Built 1979 Load: 23.6 t ADT: 10,200

T-641 (TWP BR)

Fair

Over: WEST BR. TOMJACK CREEK

2.2 MI. EAST OF WETONA, Bradford, PA

Built 1920 Load: 23.6 t ADT: 30

INTERSTATE 295(EB)

Fair

Over: FLOWERS MILL ROAD(T344)

FAIRLESS JUNCTION 37E11, Bucks, PA

Built 1972 Load: 23.6 t ADT: 23,523

INTERSTATE 295(WB)

Fair

Over: FLOWERS MILL ROAD(T344)

FAIRLESS JUNCTION 37E11, Bucks, PA

Built 1972 Load: 23.6 t ADT: 24,374

INTERSTATE 295 WB

Fair

Over: NORFOLK SOUTHERN;CSX

1MI.N.LANGHORNE 37H08, Bucks, PA

Built 1972 Load: 23.6 t ADT: 24,374

INTERSTATE 295 WB

Fair

Over: LR 281 PARALLEL: US 1

1MI.N.LANGHORNE 37H07, Bucks, PA

Built 1972 Load: 23.6 t ADT: 23,585

STREET ROAD

Fair

Over: SEPTA (NOT ACTIVE)

EAST CHERRY LANE 35D11, Bucks, PA

Built 1968 Load: 23.6 t ADT: 24,142

EDGLEY-WOODBOURNE

Fair

Over: QUEEN ANNE CREEK

1.8MI.SOUTH US-1 43A01, Bucks, PA

Built 1955 Load: 23.6 t ADT: 14,275

STONEY HILL ROAD

Fair

Over: US-1

WEST WOOLSTON DR. 38E07, Bucks, PA

Built 1985 Load: 23.6 t ADT: 5,791

TRAUGERS BRIDGE

Fair

Over: DELAWARE CANAL

SE OF DURHAM FURNACE, Bucks, PA

Built 1984 Load: 23.6 t ADT: 10

SR0079 SB

Fair

Over: SR8005 (RAMP E)

ROCK LAKE SB, Butler, PA

Built 1968 Load: 23.6 t ADT: 13,916

SR3039

Fair

Over: SR0422 EB&WB

DUFFY ROAD, Butler, PA

Built 1962 Load: 23.6 t ADT: 7,698

SR0528

Fair

Over: SR0079 SB

ROLLING HILLS SB, Butler, PA

Built 1968 Load: 23.6 t ADT: 8,016

SR3013

Fair

Over: CONNOQUENESSING CREEK

RIBOLD, Butler, PA

Built 1962 Load: 23.6 t ADT: 447

SR3025

Fair

Over: LIT CONNOQUENESSING CR

LITTLE CREEK RD NO.2, Butler, PA

Built 1977 Load: 23.6 t ADT: 279

T-712 TROUTMAN RD

Fair

Over: BEAR CREEK

1/2 MI S OF SR 1010, Butler, PA

Built 1903 Load: 23.6 t ADT: 100

T-354 SPITHALER

Fair

Over: CONNOQUENESSING CR

0.6MI NW of SR3010, Butler, PA

Built 1992 Load: 23.6 t ADT: 250

OAK STREET

Fair

Over: SOLOMON RUN

JOHNSTOWN OAK STREET, Cambria, PA

Built 1987 Load: 23.6 t ADT: 513

SR 120-PA 120

Fair

Over: PORTAGE CREEK

EMPORIUM, Cameron, PA

Built 1933 Load: 23.6 t ADT: 4,315

MERMON AVE

Fair

Over: NESQUEHONING CREEK

MERMON AVE, Carbon, PA

Built 1950 Load: 23.6 t ADT: 1,400

SR 80-I 80

Fair

Over: SR 26-PA 26

EXIT 161 BELLEFONTE INTER, Centre, PA

Built 1967 Load: 23.6 t ADT: 11,545

SR 322-US 322

Fair

Over: SR 3012 SLAB CABIN RUN

3 MI N STATE COLLEGE, Centre, PA

Built 1984 Load: 23.6 t ADT: 7,389

N BAILEY RD (T443)

Fair

Over: US-30 BYPASS

.9MI.W.THORNDALE 29H1, Chester, PA

Built 1961 Load: 23.6 t ADT: 3,933

HOPEWELL ROAD

Fair

Over: US-1 BY-PASS

.7MI.S.PA 472 INT. 51B03, Chester, PA

Built 1968 Load: 23.6 t ADT: 1,503

NEW GARDEN STA RD

Fair

Over: EAST BR WHITE CLAY CREEK

LONDON GROVE TWP. 46E12, Chester, PA

Built 1984 Load: 23.6 t ADT: 4,524

SR 150-PA 150

Fair

Over: BALD EAGLE CREEK

FLEMINGTON, Clinton, PA

Built 1933 Load: 23.6 t ADT: 13,438

T-322 ISLAND RD

Fair

Over: FISHING CREEK

0.2 MI NE OF CEDAR SPRING, Clinton, PA

Built 1977 Load: 23.6 t ADT: 100

MILLVILLE ROAD

Fair

Over: OVER LITTLE FISHING CK

3 MILES S OF MILLVILLE, Columbia, PA

Built 1969 Load: 23.6 t ADT: 3,788

BROWN STREET

Fair

Over: OVER OIL CREEK

BROWN STREET TITUSVILLE, Crawford, PA

Built 1991 Load: 23.6 t ADT: 500

US 11 SB; SR 0011

Fair

Over: I-81; SR 0081 COLL/DIST

SUMMERDALE, Cumberland, PA

Built 1972 Load: 23.6 t ADT: 9,203

I-81 NB; SR 0081

Fair

Over: BURNT HOUSE RD.; T-451

4 MI.S. OF CARLISLE, Cumberland, PA

Built 1963 Load: 23.6 t ADT: 20,565

T-574; BERNHEISEL

Fair

Over: I-81; SR 0081

T-574 OVER I-81, Cumberland, PA

Built 1969 Load: 23.6 t ADT: 1,584

SR 1015 CENTER ST.

Fair

Over: CONODOGUINET CREEK&T-649

EAST PENNSBORO TWP, Cumberland, PA

Built 1969 Load: 23.6 t ADT: 10,805

I-81; SR 0081

Fair

Over: SR 8001 RAMP E

NORTH HARRISBURG, Dauphin, PA

Built 1972 Load: 23.6 t ADT: 57,261

US 322 WB; SR 0322

Fair

Over: SR 3030 & ABANDONED RR

CHAMBERS HILL, Dauphin, PA

Built 1970 Load: 23.6 t ADT: 21,239

BRYN MAWR AVENUE

Fair

Over: DARBY CREEK

3MI.EAST PA-3 25F03, Delaware, PA

Built 1928 Load: 23.6 t ADT: 6,908

T-322 PIGS EAR RD.

Fair

Over: EAST BRANCH SPRING CREEK

1.2 MI SOUTH OF RT 66 JCT, Elk, PA

Built 1900 Load: 23.6 t ADT: 69

SR 5 WEST LAKE RD.

Fair

Over: OVER CSX RAILROAD

GIRARD TOWNSHIP, Erie, PA

Built 1982 Load: 23.6 t ADT: 1,293

SR 4016 38TH ST

Fair

Over: OVER SR 79 NB/SB

CITY OF ERIE, Erie, PA

Built 1965 Load: 23.6 t ADT: 15,009

SR 2008

Fair

Over: MEADOW RUN

WHARTON TOWNSHIP, Fayette, PA

Built 1946 Load: 23.6 t ADT: 516

SR 4038

Fair

Over: BRANCH OF WASHINGTON RUN

PERRYOPOLIS BOROUGH, Fayette, PA

Built 1939 Load: 23.6 t ADT: 520

HOGSETT LANE

Fair

Over: COVE RUN

OLIVER, Fayette, PA

Built 1926 Load: 23.6 t ADT: 700

T-459 FURNACE RD

Fair

Over: COAL LICK RUN

1/4 MI EAST OF SR 2025, Fayette, PA

Built 1900 Load: 23.6 t ADT: 2,100

SR 3004 NEBRASKA

Fair

Over: OVER PINEY RUN

GREEN TOWNSHIP, Forest, PA

Built 1925 Load: 23.6 t ADT: 284

SR 1005

Fair

Over: I-81; SR 0081

1 MI.S. SHIPPENSBURG, Franklin, PA

Built 1963 Load: 23.6 t ADT: 1,662

Showing 1,151-1,200 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.