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

BLUE TEEL CIRCLE

Fair

Over: BRANCH MINE RUN

N OF EAGLEVILLE RD, Montgomery, PA

Built 1978 Load: 28.1 t ADT: 50

INDIAN CREEK ROAD

Fair

Over: INDIAN CREEK

BTWN BERGEY RD & COWPATH, Montgomery, PA

Built 1970 Load: 28.1 t ADT: 500

FORMAN ROAD

Fair

Over: TRIB TO SKIPPACK CREEK

NE OF SCHOOLHOUSE RD, Montgomery, PA

Built 1970 Load: 28.1 t ADT: 1,500

LOMAN AVE

Fair

Over: TRIB TO LITTLE CONEWAGO

At int w/Derry Rd, York, PA

Built 1990 Load: 28.1 t ADT: 200

CAMBRIDGE DRIVE

Fair

Over: TREWELLYN CREEK

0.1 MI S WELSH RD 3145-C7, Montgomery, PA

Built 1988 Load: 28.1 t ADT: 500

PLUM RUN ROAD

Fair

Over: PLUM RUN

PLUM RUN ROAD BRIDGE, Adams, PA

Built 1993 Load: 28.1 t ADT: 500

COLUMBUS AVE

Fair

Over: HULL CREEK

170 FT SE OF 4TH STREET, Lackawanna, PA

Built 1983 Load: 28.1 t ADT: 200

BRENEMAN RD

Fair

Over: BACK RUN RD

AT INTERSECTION W/ BACK R, Lancaster, PA

Built 1997 Load: 28.1 t ADT: 200

EBY RD

Fair

Over: TRIB TO MILL CREEK

WEST OF RED LN, Lancaster, PA

Built 1990 Load: 28.1 t ADT: 200

MAPLE AVE

Fair

Over: GROFF CREEK

NORTH OF CENTER SQUARE RD, Lancaster, PA

Built 1986 Load: 28.1 t ADT: 100

N MAPLE AVE

Fair

Over: TRIB GROFF CREEK

SOUTH OF CENTER SQUARE RD, Lancaster, PA

Built 1985 Load: 28.1 t ADT: 200

BRETHREN CHURCH RD

Fair

Over: GROFF CREEK

NORTH OF CENTER SQUARE RD, Lancaster, PA

Built 1985 Load: 28.1 t ADT: 200

BRETHREN CHURCH RD

Fair

Over: TRIB GROFF CREEK

SOUTH OF PEACE RD, Lancaster, PA

Built 1983 Load: 28.1 t ADT: 500

CENTER SQUARE RD

Fair

Over: TRIB GROFF CREEK

WEST OF MAPLE AVE, Lancaster, PA

Built 1985 Load: 28.1 t ADT: 300

PA 116; SR 0116

Fair

Over: MIDDLE CREEK

FAIRFIELD, Adams, PA

Built 1954 Load: 29.0 t ADT: 6,265

PA 234; SR 0234

Fair

Over: CONEWAGO CREEK

BRIDGEPORT, Adams, PA

Built 1932 Load: 29.0 t ADT: 1,685

SR 2014

Fair

Over: ALLOWAY CREEK

0.5 MI. N. OF MD. LINE, Adams, PA

Built 1954 Load: 29.0 t ADT: 939

WINDING ROAD

Fair

Over: CONEWAGO CREEK

1.5 NW ARENDTSVIL/CONEWAG, Adams, PA

Built 1978 Load: 29.0 t ADT: 75

BALTIMORE RD

Fair

Over: BERMUDIAN CREEK

1SE YORK SPRG/BERMUDN CR., Adams, PA

Built 1938 Load: 29.0 t ADT: 150

SALEM CHURCH RD

Fair

Over: TRIB OF SWIFT RUN

1.5 GULDENS TR.SWIFT RUN, Adams, PA

Built 1950 Load: 29.0 t ADT: 50

SR 0028 SB

Fair

Over: COAL CO RD & BARGE BASIN

BARGE BASIN, Allegheny, PA

Built 1971 Load: 29.0 t ADT: 24,013

SR 0028 SB

Fair

Over: DEER CREEK

NEAR HARMARVILLE INTERCH, Allegheny, PA

Built 1970 Load: 29.0 t ADT: 24,013

SR 60

Fair

Over: P&O RR CHARTIERS CREEK

THORNBURG BRIDGE, Allegheny, PA

Built 1980 Load: 29.0 t ADT: 16,597

SR 65

Fair

Over: DILWORTH RUN W.BELVUE ST

.3 MI. NW OF SR 4012, Allegheny, PA

Built 1930 Load: 29.0 t ADT: 20,468

SR 65

Fair

Over: SPRUCE RUN CR.-SPRUCE ST

1/4 S.E. OF SR 4021, Allegheny, PA

Built 1930 Load: 29.0 t ADT: 21,180

Neville Island Brg

Fair

Over: CSX RR NS RR OHIO RIVER

Neville Island Bridge, Allegheny, PA

Built 1976 Load: 29.0 t ADT: 50,492

RAYMOND SHAFER HW

Fair

Over: 8017 RAMP A & SR 4033

0.4 MILES N OF SR 0065, Allegheny, PA

Built 1975 Load: 29.0 t ADT: 33,782

Tarentum Bridge

Fair

Over: NSRR (Abdn) Allegheny R

Tarentum Bridge, Allegheny, PA

Built 1949 Load: 29.0 t ADT: 33,883

I-376

Fair

Over: SUNSET DRIVE

1 MI E OF RODI RD INTER, Allegheny, PA

Built 1962 Load: 29.0 t ADT: 52,457

I-376

Fair

Over: UNION RR THOMPSON RUN

2.5 MI W OF PA TURNPIKE, Allegheny, PA

Built 1962 Load: 29.0 t ADT: 52,457

NORTH CANAL ST

Fair

Over: SEITZ RUN

0.5 NE OF MAIN STREET, Allegheny, PA

Built 1960 Load: 29.0 t ADT: 3,236

BAKERSTOWN ROAD

Fair

Over: SR 0028

NEAR TARENTUM INTERCHANGE, Allegheny, PA

Built 1983 Load: 29.0 t ADT: 1,177

PORT VUE BRIDGE

Fair

Over: SR 2027 CSX RR YOUGH R

PORT VUE BRIDGE, Allegheny, PA

Built 1995 Load: 29.0 t ADT: 7,131

Blvd of the Allies

Fair

Over: 02270 PAT 2ND AV ROSS ST

Liberty Bridge, Allegheny, PA

Built 1921 Load: 29.0 t ADT: 3,951

Liberty Bridge

Fair

Over: MON R I376 0837 2 AV ARL

Liberty Bridge, Allegheny, PA

Built 1928 Load: 29.0 t ADT: 42,292

VOSKAMP DRIVE

Fair

Over: LITTLE DEER CREEK

DL04 LIT DEER CRK NO. 4, Allegheny, PA

Built 1910 Load: 29.0 t ADT: 41

MAPLE SPRING DR

Fair

Over: CATFISH RUN

CT05 CATFISH RUN NO. 5, Allegheny, PA

Built 1936 Load: 29.0 t ADT: 6,959

JACKMAN AV

Fair

Over: W BELLEVUE RD DILWRTH RN

DH03 INT RIVERVIEW AVE, Allegheny, PA

Built 1903 Load: 29.0 t ADT: 2,147

RAMP D

Fair

Over: ARDMORE BLVD.

RP D EB OVER ARDMORE BLVD, Allegheny, PA

Built 1952 Load: 29.0 t ADT: 5,831

RAMP H

Fair

Over: PGH. IND. RAILROAD

Neville Island Bridge, Allegheny, PA

Built 1972 Load: 29.0 t ADT: 2,761

SR0028 NB

Fair

Over: T-435 MCHADDON RD

MCHADDON NO.2 NB, Armstrong, PA

Built 1968 Load: 29.0 t ADT: 6,819

SR0028 SB

Fair

Over: T-435 MCHADDON RD

MCHADDON NO.2 SB, Armstrong, PA

Built 1968 Load: 29.0 t ADT: 6,844

SR0085

Fair

Over: TRIB TO COWANSHANNOCK CR

SOUTH OF RURAL VALLEY, Armstrong, PA

Built 1962 Load: 29.0 t ADT: 4,345

SR1015

Fair

Over: REDBANK CREEK

OAK RIDGE NO.2, Armstrong, PA

Built 1980 Load: 29.0 t ADT: 187

SR2012

Fair

Over: RUPP RUN

SILVIS HOLLOW, Armstrong, PA

Built 1933 Load: 29.0 t ADT: 151

BEAVER VALLEY EX

Fair

Over: TWP.RD.513

0.4 MI NE OF SR 0068, Beaver, PA

Built 1969 Load: 29.0 t ADT: 26,402

BRADY RUN RD

Fair

Over: SOUTH BRANCH BRADY RUN

100E.OF TWP.RD.404, Beaver, PA

Built 1930 Load: 29.0 t ADT: 85

PA 26

Fair

Over: RAVERS RUN

1.8 MILE SOUTH OF TR 913, Bedford, PA

Built 1929 Load: 29.0 t ADT: 1,961

I-99 / US 220 NBL

Fair

Over: PA 869

OVER TR 869, Bedford, PA

Built 1978 Load: 29.0 t ADT: 5,166

I-99 / US 220 SBL

Fair

Over: PA 869

OVER TR 869, Bedford, PA

Built 1978 Load: 29.0 t ADT: 4,766

Showing 2,501-2,550 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.