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

PA TPK (I-276)

Fair

Over: BR.PENNYPACK CR.

EAST OF HATBORO, Montgomery, PA

Built 1954 Load: 89.7 t ADT: 104,500

PA TPK (I-476)

Fair

Over: N.BR.STONY CREEK

NEAR CENTER SQUARE, Montgomery, PA

Built 1955 Load: 89.7 t ADT: 65,329

SR 11

Fair

Over: SECHLER RUN

BOROUGH OF DANVILLE, Montour, PA

Built 1955 Load: 89.7 t ADT: 12,743

SR 0084 I-84

Fair

Over: WEST BRANCH BIRCHY CREEK

DINGMAN TWP @ MILE 36.9, Pike, PA

Built 1967 Load: 89.7 t ADT: 12,776

I-81 NB

Fair

Over: RAUSCH CREEK

0.25 MI.N.OF EXIT 104(32), Schuylkill, PA

Built 1969 Load: 89.7 t ADT: 11,804

SR 4027(LR 53083)

Fair

Over: BIG RUN

LAVELLE RD. @ GERMANVILLE, Schuylkill, PA

Built 1953 Load: 89.7 t ADT: 2,737

T830 SHAFFER RUN R

Fair

Over: SHAFFERS RUN

4.6 MILE N OF FAIRHOPE, Somerset, PA

Built 1982 Load: 89.7 t ADT: 11

PA TPK (I-76)

Fair

Over: CRAB RUN

EAST OF LAUREL SUMMIT, Somerset, PA

Built 1939 Load: 89.7 t ADT: 31,991

PA TPK (I-76)

Fair

Over: GLADES CREEK

EAST OF BROTHERTON, Somerset, PA

Built 1939 Load: 89.7 t ADT: 29,452

PA TPK (I-76)

Fair

Over: TRIB. TO STONY CREEK

WEST OF ALLEGHENY TUNNEL, Somerset, PA

Built 1939 Load: 89.7 t ADT: 29,452

PA TPK (I-76)

Fair

Over: T-782

NEAR NEW BALTIMORE, Somerset, PA

Built 1939 Load: 89.7 t ADT: 31,200

T-460

Fair

Over: LICK CREEK

0.6 MI N OF CHERRY MILLS, Sullivan, PA

Built 1929 Load: 89.7 t ADT: 30

TR 287 & CONRAIL

Fair

Over: OVER ELKHORN CREEK

1 MI SW OF TIOGA, Tioga, PA

Built 1975 Load: 89.7 t ADT: 2,620

SR 308 FRANKLIN RD

Fair

Over: OVER SCRUBGRASS CREEK

CLINTON TOWNSHIP, Venango, PA

Built 1968 Load: 89.7 t ADT: 1,103

SR 0070

Fair

Over: CATFISH CREEK

CANTON TOWNSHIP, Washington, PA

Built 1960 Load: 89.7 t ADT: 43,891

SR 0070

Fair

Over: BR. LITTLE CHARTIERS CK.

SOUTH STRABANE TOWNSHIP, Washington, PA

Built 1960 Load: 89.7 t ADT: 25,692

SR 0070

Fair

Over: BR. PIGEON CREEK

SOMERSET TOWNSHIP, Washington, PA

Built 1956 Load: 89.7 t ADT: 27,992

SR 0070

Fair

Over: NORTH BR. PIGEON CREEK

SOMERSET TOWNSHIP, Washington, PA

Built 1956 Load: 89.7 t ADT: 27,992

SR 0056

Fair

Over: LITTLE PUCKETA CREEK

CITY OF NEW KENSINGTON, Westmoreland, PA

Built 1958 Load: 89.7 t ADT: 12,033

SR 0056

Fair

Over: LITTLE PUCKETA CREEK

CITY OF NEW KENSINGTON, Westmoreland, PA

Built 1958 Load: 89.7 t ADT: 12,033

SR 0056

Fair

Over: TRIB. KISKIMINITAS RIVER

ALLEGHENY TOWNSHIP, Westmoreland, PA

Built 1971 Load: 89.7 t ADT: 6,072

SR 0056

Fair

Over: TRIB. KISKIMINITAS RIVER

ALLEGHENY TOWNSHIP, Westmoreland, PA

Built 1971 Load: 89.7 t ADT: 6,541

SR 0981

Fair

Over: UNION RUN

DERRY TOWNSHIP, Westmoreland, PA

Built 1947 Load: 89.7 t ADT: 7,987

SR 0993

Fair

Over: BRUSH CREEK

NORTH HUNTINGDON TOWNSHIP, Westmoreland, PA

Built 1901 Load: 89.7 t ADT: 3,134

PA TURNPIKE (I-76)

Fair

Over: TR.SEWICKLEY CREEK

WEST OF OLD STANTON, Westmoreland, PA

Built 1939 Load: 89.7 t ADT: 34,735

PA TPK(I-76)

Fair

Over: SR 2006 Mennonite Camp

NEAR SR982 & SR31 JCT, Westmoreland, PA

Built 1939 Load: 89.7 t ADT: 34,232

PA TPK (I-76)

Fair

Over: JACOBS CREEK

WEST OF DONEGAL INTERCHGE, Westmoreland, PA

Built 1939 Load: 89.7 t ADT: 34,232

PA TPK (I-76)

Fair

Over: JACOBS CREEK

WEST OF DONEGAL INTERCHGE, Westmoreland, PA

Built 1939 Load: 89.7 t ADT: 34,232

Johnson Street

Fair

Over: SEPTA

N of Wayne Ave 17B09, Philadelphia, PA

Built 1909 Load: 89.7 t ADT: 2,000

Mt Moriah Cemetery

Fair

Over: Cobbs Creek

S of Cobbs Crk Pkwy.36E03, Philadelphia, PA

Built 1929 Load: 89.7 t ADT: 400

66th Avenue

Fair

Over: SEPTA (MAIN LINE)

E of 10th Street 18A07, Philadelphia, PA

Built 1913 Load: 89.7 t ADT: 5,800

PA 93 (LR 170)

Fair

Over: NORFOLK/SOUT ACESS RD

PA93-US209 INTERSECTION, Carbon, PA

Built 1959 Load: 90.7 t ADT: 3,899

PA 93 (LR 170)

Fair

Over: NESQUEHONING CREEK

PA93-US209 INTERSECTION, Carbon, PA

Built 1959 Load: 90.7 t ADT: 3,899

I-80 RAMPS H-G

Fair

Over: BLACK CREEK

EXIT 42 RAMP, Carbon, PA

Built 1965 Load: 90.7 t ADT: 4,720

T-545

Fair

Over: HAMMERSLEY FORK

2.8 MI NE HAMMERSLEY FORK, Clinton, PA

Built 1933 Load: 90.7 t ADT: 15

I-80 EB (LR 1002)

Fair

Over: DRY SAWMILL RUN

8 MI.W. OF PA 33, Monroe, PA

Built 1962 Load: 90.7 t ADT: 17,842

PA 191

Fair

Over: BUCK HILL CREEK

3 MI.S.OF PIKE CO.LINE, Monroe, PA

Built 1948 Load: 90.7 t ADT: 358

SR 3020

Fair

Over: KLINES CREEK

0.1MI.N.0F SR 222, Berks, PA

Built 2004 Load: 90.7 t ADT: 1,293

T-301 MIDDLE RD

Fair

Over: PURDUE CREEK

300 FT NE OF WOODMERE RD, Erie, PA

Built 1990 Load: 91.6 t ADT: 360

T-363 LAFFERTY HOL

Fair

Over: KENDALL CREEK

1000 FT NE OF SR 46, McKean, PA

Built 1995 Load: 91.6 t ADT: 150

3008;Couchtown Rd

Fair

Over: Sherman Creek

4.75 Mi East of Blain, Perry, PA

Built 1864 Load: 91.6 t ADT: 159

PA 324; SR 0324

Fair

Over: PEQUEA CREEK

1 MI. N. OF MARTICVILLE, Lancaster, PA

Built 1930 Load: 92.5 t ADT: 3,035

SR 1002 (LR 443)

Fair

Over: PRIVATE RD.& L.CEDAR CK.

TILGHMAN W.OF CEDAR CREST, Lehigh, PA

Built 1936 Load: 92.5 t ADT: 21,937

SR 2044(LR 39002)

Fair

Over: TRIB. TO SAUCON CREEK

E.SAUCON VALLEY RD., Lehigh, PA

Built 1990 Load: 92.5 t ADT: 21,082

GLENMERE RD.

Fair

Over: BRODHEAD CREEK

1 MI. N. OF CANADENSIS, Monroe, PA

Built 1988 Load: 92.5 t ADT: 50

SR 2012

Fair

Over: SILVER CREEK

4 MI NW OF PORT TREVERTON, Snyder, PA

Built 1953 Load: 93.4 t ADT: 168

SR 1013

Fair

Over: JACOBS CREEK

BULLSKIN TOWNSHIP, Fayette, PA

Built 1923 Load: 94.3 t ADT: 560

WILD CHERRY LANE

Fair

Over: LITTLE LEHIGH CREEK

NORTH OF MACUNGIE, Lehigh, PA

Built 1980 Load: 94.3 t ADT: 400

BEIDLER ROAD(T231)

Fair

Over: Crow Creek

1 Mi N of PA 23 3366-K3, Montgomery, PA

Built 1964 Load: 94.3 t ADT: 1,122

SR 0136

Fair

Over: Southwest PA Railroad

HEMPFIELD TOWNSHIP, Westmoreland, PA

Built 1989 Load: 94.3 t ADT: 8,865

Showing 12,251-12,300 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.