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 22-US 22

Fair

Over: CARTERS RUN

2 MI W NEWTON HAMILTON, Mifflin, PA

Built 1948 Load: 99.8 t ADT: 5,994

PA 115

Fair

Over: TUNKHANNOCK CREEK

NEAR PA 903, Monroe, PA

Built 1974 Load: 99.8 t ADT: 7,528

PA 611 (LR 168)

Fair

Over: SCOT RUN

TANNERSVILLE, Monroe, PA

Built 1948 Load: 99.8 t ADT: 10,869

US 209 BUS.(LR164)

Fair

Over: APPENZELL CREEK

1 MILE S OF SNYDERSVILLE, Monroe, PA

Built 1925 Load: 99.8 t ADT: 4,721

CHURCH ROAD

Fair

Over: TOOKANY CREEK

.3MI.E.READING RR 3370K08, Montgomery, PA

Built 1927 Load: 99.8 t ADT: 8,669

SANATOGA STA RD

Fair

Over: SPROGELS RUN

.4 MI S OF E HIGH 3139-C2, Montgomery, PA

Built 2001 Load: 99.8 t ADT: 500

PA TPK (I-276)

Fair

Over: PENNYPACK CREEK

WILLOW GROVE INTERCHANGE, Montgomery, PA

Built 1954 Load: 99.8 t ADT: 97,693

SR 1014

Fair

Over: W. B. SUSQUEHANNA RIVER

WATSONTOWN BORO RIVER BR., Northumberland, PA

Built 1927 Load: 99.8 t ADT: 3,765

ENTRANCE ROAD

Fair

Over: NINE MILE RUN

DENTON HILL STATE PARK, Potter, PA

Built 1970 Load: 99.8 t ADT: 40

US 209

Fair

Over: W. BR. SCHUYLKILL RIVER

LLEWELLYN @ E.BUNTING AVE, Schuylkill, PA

Built 1993 Load: 99.8 t ADT: 5,105

PA 985

Fair

Over: QUEMAHONING CREEK

5 MI.N.OF SOMERSET, Somerset, PA

Built 1949 Load: 99.8 t ADT: 3,155

US 6

Fair

Over: CHARLESTON CREEK

0.25 MI E OF WELLSBORO, Tioga, PA

Built 1939 Load: 99.8 t ADT: 10,935

SR 4003

Fair

Over: BROUGHTON BROOK

0.75 MI SE OF WESTFIELD, Tioga, PA

Built 1952 Load: 99.8 t ADT: 104

SR 0019

Fair

Over: BR. LITTLE TENMILE CREEK

AMWELL TOWNSHIP, Washington, PA

Built 1965 Load: 99.8 t ADT: 2,808

SR 0019

Fair

Over: BRUSH RUN

PETERS TOWNSHIP, Washington, PA

Built 1940 Load: 99.8 t ADT: 23,832

SR 0022

Fair

Over: SAINT PATRICK RUN

ROBINSON TOWNSHIP, Washington, PA

Built 1968 Load: 99.8 t ADT: 26,066

SR 0040

Fair

Over: Out of Service CSX R/R

BUFFALO TOWNSHIP, Washington, PA

Built 1919 Load: 99.8 t ADT: 3,797

SR 0070

Fair

Over: BRANCH OF BUFFALO CREEK

BUFFALO TOWNSHIP, Washington, PA

Built 1960 Load: 99.8 t ADT: 28,637

SR 0070

Fair

Over: PIGEON CREEK

FALLOWFIELD TOWNSHIP, Washington, PA

Built 1949 Load: 99.8 t ADT: 28,172

SR 0070

Fair

Over: SOUTH BRANCH MAPLE CREEK

TWILIGHT BOROUGH, Washington, PA

Built 1952 Load: 99.8 t ADT: 26,234

SR 0088

Fair

Over: NORTH BRANCH FISHPOT RUN

EAST BETHLEHEM TOWNSHIP, Washington, PA

Built 1966 Load: 99.8 t ADT: 4,910

SR 4004

Fair

Over: LITTLE RACCOON RUN

SMITH & ROBINSON TWP., Washington, PA

Built 1928 Load: 99.8 t ADT: 4,084

SR 4004

Fair

Over: SAINT PATRICK RUN

ROBINSON TOWNSHIP, Washington, PA

Built 1968 Load: 99.8 t ADT: 924

SR 4007

Fair

Over: BRANCH OF RACCOON CREEK

SMITH TOWNSHIP, Washington, PA

Built 1970 Load: 99.8 t ADT: 3,144

SR 4020

Fair

Over: CHARTIERS CREEK

CANTON & S STRABANE TWP., Washington, PA

Built 1955 Load: 99.8 t ADT: 7,168

SR 4041

Fair

Over: Westland Mine Entry

MOUNT PLEASANT TOWNSHIP, Washington, PA

Built 1932 Load: 99.8 t ADT: 261

SR 8005

Fair

Over: BR. LITTLE TENMILE CREEK

AMWELL TOWNSHIP, Washington, PA

Built 1965 Load: 99.8 t ADT: 1,515

SR 0022

Fair

Over: WHITETHORN CREEK

SALEM TOWNSHIP, Westmoreland, PA

Built 1949 Load: 99.8 t ADT: 21,415

SR 0022

Fair

Over: SPRUCE RUN

DERRY TOWNSHIP, Westmoreland, PA

Built 1951 Load: 99.8 t ADT: 22,738

SR 0030

Fair

Over: BRANCH OF BRUSH CREEK

IRWIN BOROUGH, Westmoreland, PA

Built 1939 Load: 99.8 t ADT: 25,296

SR 0056

Fair

Over: CHARTIERS RUN

CITY OF LOWER BURRELL, Westmoreland, PA

Built 1957 Load: 99.8 t ADT: 7,463

SR 0056

Fair

Over: PINE RUN

ALLEGHENY TOWNSHIP, Westmoreland, PA

Built 1971 Load: 99.8 t ADT: 12,613

SR 0066

Fair

Over: Norfolk Southern Railway

CITY OF GREENSBURG, Westmoreland, PA

Built 1989 Load: 99.8 t ADT: 8,051

SR 0070

Fair

Over: SPEERS RUN

NORTH BELLE VERNON BORO., Westmoreland, PA

Built 1949 Load: 99.8 t ADT: 29,948

SR 0119

Fair

Over: JACKS RUN

SOUTH GREENSBURG BOROUGH, Westmoreland, PA

Built 1951 Load: 99.8 t ADT: 20,486

SR 0993

Fair

Over: BRUSH CREEK

NORTH HUNTINGDON TOWNSHIP, Westmoreland, PA

Built 1901 Load: 99.8 t ADT: 3,134

SR 0993

Fair

Over: BRUSH CREEK

NORTH HUNTINGDON TOWNSHIP, Westmoreland, PA

Built 1901 Load: 99.8 t ADT: 3,134

SR 0993

Fair

Over: BRUSH CREEK

NORTH HUNTINGDON TOWNSHIP, Westmoreland, PA

Built 1901 Load: 99.8 t ADT: 3,134

SR 4061

Fair

Over: POKE RUN

WASHINGTON TOWNSHIP, Westmoreland, PA

Built 1986 Load: 99.8 t ADT: 124

SR 8007

Fair

Over: BRANCH OF SEWICKLEY CK.

NEW STANTON BOROUGH, Westmoreland, PA

Built 1977 Load: 99.8 t ADT: 4,403

Ryan Avenue

Fair

Over: Sandy Run

N of Sandyford Ave 19D08, Philadelphia, PA

Built 1929 Load: 99.8 t ADT: 8,700

GLEN ONOKO BRIDGE

Fair

Over: LEHIGH RIVER

LEHIGH GORGE SP, Carbon, PA

Built 1812 Load: 99.8 t ADT: 100

SOUTH SIDE ROAD

Fair

Over: ABANDONED RAILROAD

650 NORTH OF SR 993, Westmoreland, PA

Built 1998 Load: 99.8 t ADT: 100

SR 611(LR 165)

Fair

Over: MUD RUN

SANDTS EDDY, Northampton, PA

Built 2002 Load: 99.8 t ADT: 3,393

T-348 COLE ROAD

Fair

Over: TRIB.CONNEAUT CREEK

0.1 MI.SOUTH OF SR 198, Crawford, PA

Built 2000 Load: 99.8 t ADT: 250

SR 3047

Fair

Over: POSSUM HOLLOW RUN

INTERSECTION OF SR 3049, Westmoreland, PA

Built 2007 Load: 99.8 t ADT: 1,061

BALSAM SWAMP ROAD

Fair

Over: VAN AUKEN CREEK

.2 MI S. OF OLD RTE. 6, Wayne, PA

Built 2007 Load: 99.8 t ADT: 40

T-369 McBRIDE ROAD

Fair

Over: BIG RUN

1500 N of T455, Butler, PA

Built 2010 Load: 99.8 t ADT: 100

MAIN STREET EXT

Fair

Over: WOLFE RUN

.3 mi. N. SR 3014 Inter., Butler, PA

Built 2011 Load: 99.8 t ADT: 100

SUNNYBROOK ROAD

Fair

Over: LANDIS CREEK

0.4 MI E OF RIDGE PIKE, Montgomery, PA

Built 2003 Load: 99.8 t ADT: 500

Showing 12,401-12,450 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.