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

ON MILL STREET

Fair

Over: LILLIBRIDGE CREEK

PORT ALLEGANY BORO, McKean, PA

Built 1962 Load: 44.5 t ADT: 1,822

WEST MILL STREET

Fair

Over: ALLEGHENY RIVER

1/2 MILE SW OF US 6, McKean, PA

Built 1992 Load: 44.5 t ADT: 500

T-362 WEST VALLEY

Fair

Over: BREWER RUN

500 FT N OF SAKETT HOLLOW, McKean, PA

Built 1940 Load: 44.5 t ADT: 100

SR 58 MERCER ROAD

Fair

Over: OVER LAWANGO RUN

DELAWARE TOWNSHIP, Mercer, PA

Built 1960 Load: 44.5 t ADT: 3,409

SR 79 NB

Fair

Over: OVER SR 1009

NEW VERNON TOWNSHIP, Mercer, PA

Built 1969 Load: 44.5 t ADT: 6,476

SR 79 SB

Fair

Over: OVER SR 1009

NEW VERNON TOWNSHIP, Mercer, PA

Built 1969 Load: 44.5 t ADT: 6,474

BRIDGE 2011 T-730

Fair

Over: OVER YELLOW CREEK

ANDRUSKY RD COOLSPRING, Mercer, PA

Built 1985 Load: 44.5 t ADT: 104

BRIDGE 408 T-718

Fair

Over: OVER SANDY CREEK

OLD PERRY HGY SANDY CREEK, Mercer, PA

Built 1986 Load: 44.5 t ADT: 78

SR 22-US 22

Fair

Over: MUSSER RUN

1 MI SW MCVEYTOWN, Mifflin, PA

Built 1935 Load: 44.5 t ADT: 6,199

SR 3009

Fair

Over: TOWN RUN

1 MILE NW MCVEYTOWN, Mifflin, PA

Built 1989 Load: 44.5 t ADT: 497

ON TSR 350

Fair

Over: KISHACOQUILLAS CREEK

BELLEVILLE, Mifflin, PA

Built 1941 Load: 44.5 t ADT: 741

T-446

Fair

Over: HONEY CREEK

50FT N INTER LR499 &T445, Mifflin, PA

Built 1993 Load: 44.5 t ADT: 150

PA 33NB(LR 796)

Fair

Over: I-80(LR 1002)

PA 33 NB OVER I-80, Monroe, PA

Built 1963 Load: 44.5 t ADT: 13,718

SCHUYLKILL EXPRWAY

Fair

Over: ABRAMS RUN/CROW CREEK

K OF PRUSSIA 34C01/3366H7, Montgomery, PA

Built 1950 Load: 44.5 t ADT: 49,444

P-TOWN X-WAY (EB)

Fair

Over: PA 29 COLLEGEVILLE ROAD

COLLEGEVILLE 3253D05, Montgomery, PA

Built 1976 Load: 44.5 t ADT: 31,365

POTTSTOWN EWAY(EB)

Fair

Over: PERKIOMEN CREEK/3365-H1

SOUTH OF OAKS 27D08, Montgomery, PA

Built 1982 Load: 44.5 t ADT: 30,709

POTTSTOWN EWAY(WB)

Fair

Over: PERKIOMEN CREEK

SO. OF OAKS 3365H1, Montgomery, PA

Built 1982 Load: 44.5 t ADT: 32,023

RAMP K

Fair

Over: ACCESS ROAD / 3368-D3

AT TURNPIKE EXT 25 29H09, Montgomery, PA

Built 1989 Load: 44.5 t ADT: 7,630

WEST BRANCH ROAD

Fair

Over: W. BR. PERKIOMEN CREEK

NE CORNER 2804C9, Montgomery, PA

Built 1935 Load: 44.5 t ADT: 842

BLAIR MILL ROAD

Fair

Over: BRCH PENNYPACK CR/3259A2

UPPER MORELAND, Montgomery, PA

Built 1958 Load: 44.5 t ADT: 14,560

FLINT HILL ROAD

Fair

Over: MATSUNK CREEK / 3367-H7

UPPER MERION TWP. 35B01, Montgomery, PA

Built 1998 Load: 44.5 t ADT: 1,979

UPPER GULPH ROAD

Fair

Over: OLD GULPH CREEK

3MI.TO ROSEMONT 34K05, Montgomery, PA

Built 1933 Load: 44.5 t ADT: 2,524

SUMNEYTOWN PIKE

Fair

Over: TOWAMENCIN CREEK

1.1 MI NW SR-363 3143-G2, Montgomery, PA

Built 1962 Load: 44.5 t ADT: 19,293

KEITH VALLEY ROAD

Fair

Over: PARK CREEK

1.25 MI NW SR463 3146-C7, Montgomery, PA

Built 1907 Load: 44.5 t ADT: 7,612

SUMNEYTOWN PIKE

Fair

Over: TREWELLYN CREEK

1.07 M SEOFSR202 3145-B10, Montgomery, PA

Built 1967 Load: 44.5 t ADT: 20,003

CONRAD DRIVE-RAMPS

Fair

Over: PULASKI DRIVE

AT PULASKI DRIVE 3366-F7, Montgomery, PA

Built 1962 Load: 44.5 t ADT: 5,170

SR 248 (LR 175)

Fair

Over: TRIB.TO SHOENECK CREEK

0.5 MI.E.OF PA33, Northampton, PA

Built 1960 Load: 44.5 t ADT: 16,752

SLATEFORD ROAD

Fair

Over: SLATEFORD CREEK

N. OF PORTLAND -SLATEFORD, Northampton, PA

Built 1910 Load: 44.5 t ADT: 200

SR 3018

Fair

Over: OVER MAHANTANGO CR

VILLAGE OF PILLOW, Northumberland, PA

Built 1974 Load: 44.5 t ADT: 425

T-633 TURBOT TWP.

Fair

Over: OVER MUDDY RUN

1.5 MI N OF MILTON BORO, Northumberland, PA

Built 1942 Load: 44.5 t ADT: 650

ARCH ST SHAMOKIN

Fair

Over: CARBON RUN

SHAMOKIN CITY, Northumberland, PA

Built 1994 Load: 44.5 t ADT: 3,100

US 11&15; SR 0011

Fair

Over: PA 274;SR 0274

DUNCANNON BORO, Perry, PA

Built 1959 Load: 44.5 t ADT: 8,474

US 22-322;SR 0022

Fair

Over: WILD CAT RUN

2.5MI SE OF MILLERSTOWN, Perry, PA

Built 1965 Load: 44.5 t ADT: 17,710

RED BRIDGE RD.

Fair

Over: WILDCAT CREEK

2.0 MI W OF LIVERPOOL, Perry, PA

Built 1961 Load: 44.5 t ADT: 93

CROMWELL AVENUE

Fair

Over: WALLENPAUPACK CREEK

CROMWELLTOWN BRIDGE, Pike, PA

Built 1990 Load: 44.5 t ADT: 50

SR 1005

Fair

Over: PHOENIX RUN

SUNDERLINVILLE, Potter, PA

Built 1962 Load: 44.5 t ADT: 326

SR 2002

Fair

Over: WEST BRANCH PINE CREEK

2.5 MI NE CHERRY SPRINGS, Potter, PA

Built 1961 Load: 44.5 t ADT: 140

PA 54 (LR 290)

Fair

Over: LITTLE SCHUYLKILL RIVER

VILLAGE OF MINTZERS, Schuylkill, PA

Built 1941 Load: 44.5 t ADT: 4,733

FERNDALE RD SR2003

Fair

Over: SCHUYLKILL RIVER

NEW PHILADELPHIA, Schuylkill, PA

Built 1993 Load: 44.5 t ADT: 714

PA 281

Fair

Over: EAST BR COXES CREEK

NE of 4055\281 INTERSECT, Somerset, PA

Built 1989 Load: 44.5 t ADT: 7,028

SR 2013

Fair

Over: RUSH RUN

1 MI.S.OF GLADDENS, Somerset, PA

Built 1995 Load: 44.5 t ADT: 263

SR 3021

Fair

Over: WILSON CREEK

3 MI.E.OF ROCKWOOD, Somerset, PA

Built 1915 Load: 44.5 t ADT: 234

T480 SNAKEPATH RD

Fair

Over: LAUREL RUN

4 MI.S.OF SOMERSET, Somerset, PA

Built 1915 Load: 44.5 t ADT: 25

T-542 ROSE ROAD

Fair

Over: ROARING RUN

.5 MI.N.OF BOSWELL, Somerset, PA

Built 1916 Load: 44.5 t ADT: 50

T-390 BACK ROAD

Fair

Over: DRAKE RUN

3.5 MI.N.OF CONFLUENCE, Somerset, PA

Built 1915 Load: 44.5 t ADT: 25

T-755 TOOLAND RD

Fair

Over: WILLS CREEK

.7 MI.E.OF GLENCOE, Somerset, PA

Built 1986 Load: 44.5 t ADT: 51

HORN STREET

Fair

Over: JENNINGS RUN

HORN STREET WELLERSBURG, Somerset, PA

Built 1916 Load: 44.5 t ADT: 75

SR 3003

Fair

Over: Big Run

1.2 MI NORTH OF SONESTOWN, Sullivan, PA

Built 1954 Load: 44.5 t ADT: 28

SR 1009

Fair

Over: PIG PEN RUN

LANESBORO BO .7M E SR1015, Susquehanna, PA

Built 1962 Load: 44.5 t ADT: 471

SR 2015 LINDEVL RD

Fair

Over: HOP BOTTOM CREEK

BROOKLYN TWP 150 W TR167, Susquehanna, PA

Built 1945 Load: 44.5 t ADT: 256

Showing 9,201-9,250 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.