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

T527 Ashcroft Rd

Good

Over: LITTLE CHEST CREEK

1 MI.SW.OF PATTON, Cambria, PA

Built 2007 Load: 52.6 t ADT: 50

T-582 BANNER RD

Good

Over: LITTLE PAINT CREEK

1.2 mi SW int. w/ SR4029, Clarion, PA

Built 1998 Load: 52.6 t ADT: 50

SR 2012

Good

Over: BALD EAGLE CR/CR.RD/CARO

CASTANEA FIREMENS MEMORIA, Clinton, PA

Built 1996 Load: 52.6 t ADT: 1,169

ON TSR 306

Good

Over: TWO MILE RUN

2 MILE WEST WESTPORT, Clinton, PA

Built 1918 Load: 52.6 t ADT: 190

SR 0487

Good

Over: OVER ROARING CREEK

3.5 MILES S OF CATAWISSA, Columbia, PA

Built 1974 Load: 52.6 t ADT: 4,568

SR 4004

Good

Over: OVER HEMLOCK CREEK

1 MI NORTH OF FERNVILLE, Columbia, PA

Built 1957 Load: 52.6 t ADT: 102

SR 77 STATE STREET

Good

Over: OVER BRITTON RUN

SPARTA TOWNSHIP, Crawford, PA

Built 1982 Load: 52.6 t ADT: 1,282

MID-COUNTY EXWY.NB

Good

Over: MACDADE BLVD & CRUM CR.

MACDADE BLVD.INTER.34J13, Delaware, PA

Built 1988 Load: 52.6 t ADT: 34,047

MID-COUNTY EXWY.SB

Good

Over: CONESTOGA RD & SPROUL RD

CONESTOGA;SPROUL 14G11, Delaware, PA

Built 1989 Load: 52.6 t ADT: 43,234

SR 5 PURPLE HEART

Good

Over: OVER TWENTY MILE CREEK

NORTH EAST TOWNSHIP, Erie, PA

Built 1988 Load: 52.6 t ADT: 1,410

SR 4034

Good

Over: OVER CASCADE CREEK

CITY OF ERIE, Erie, PA

Built 1990 Load: 52.6 t ADT: 14,278

SR 3006;Milnor Rd.

Good

Over: Trib Conococheague Creek

0.5 Mi. NW of Milnor, Franklin, PA

Built 1982 Load: 52.6 t ADT: 154

PA TPK (I-76)

Good

Over: SR 1010(LR 29035)

NEAR BURNT CABINS, Fulton, PA

Built 1939 Load: 52.6 t ADT: 21,197

SEEGER ROAD

Good

Over: STANDING STONE CREEK

1.5 MILES NE OF SR 1023, Huntingdon, PA

Built 2002 Load: 52.6 t ADT: 30

SR 3011

Good

Over: ST JOHNS CREEK

TAYLOR BO 150 W SR 3010, Lackawanna, PA

Built 1957 Load: 52.6 t ADT: 7,275

T-913 MT VERNON RD

Good

Over: PEQUEA CREEK

0.9 MI SOUTH OF SR 340, Lancaster, PA

Built 1998 Load: 52.6 t ADT: 620

T-383 Cassel Rd

Good

Over: PA TPK (I-476)

1 MI N OF BUCKS CO. LINE, Lehigh, PA

Built 1955 Load: 52.6 t ADT: 200

SR8047 RAMP EX2 SB

Good

Over: LUZ CO RAIL AUTHORITY

WB CITY RAMP EX 2 SB, Luzerne, PA

Built 1991 Load: 52.6 t ADT: 4,930

S.R. 414

Good

Over: OVER MILL RUN

VILLAGE OF CAMMAL, Lycoming, PA

Built 1941 Load: 52.6 t ADT: 597

SR 973

Good

Over: 2ND FORK LARRYS CREEK

BORO OF SALLADASBURG, Lycoming, PA

Built 1988 Load: 52.6 t ADT: 880

BRIDGE 3201 AIRPRT

Good

Over: OVER WOLF CREEK

AIRPORT RD. LIBERTY TWP., Mercer, PA

Built 1985 Load: 52.6 t ADT: 1,412

LAUREL RUN ROAD

Good

Over: LAUREL RUN

1.2 MI NW OF COWPENS ROAD, Perry, PA

Built 1939 Load: 52.6 t ADT: 40

MIDDLE BRANCH ROAD

Good

Over: TAYLOR CREEK

3 MI SW OF SR 402, Pike, PA

Built 2004 Load: 52.6 t ADT: 5

SR 15 NB & SB

Good

Over: TRIB.TO SUSQUEHANNA RIVE

1 MI N OF SHAMOKIN DAM, Snyder, PA

Built 1930 Load: 52.6 t ADT: 16,071

SR 4012

Good

Over: TRIBUTARY MIDDLE CREEK

1 MI N OF MIDDLE CREEK, Snyder, PA

Built 1939 Load: 52.6 t ADT: 479

T840 MT CARMEL DR

Good

Over: BISCUIT SPRING RUN

OGLETOWN, Somerset, PA

Built 1952 Load: 52.6 t ADT: 537

SR 349

Good

Over: OVER MILL CREEK

VILLAGE OF SABINSVILLE, Tioga, PA

Built 1996 Load: 52.6 t ADT: 966

SR 1003

Good

Over: OVER LITTLE BUFFALO CR

1 MI.N.OF KELLY CROSS RDS, Union, PA

Built 1934 Load: 52.6 t ADT: 431

SR 1037

Good

Over: CHARTIERS CREEK

CANONSBURG BOROUGH, Washington, PA

Built 1986 Load: 52.6 t ADT: 2,292

SR 2049

Good

Over: BARRS RUN

WEST BETHLEHEM TOWNSHIP, Washington, PA

Built 1943 Load: 52.6 t ADT: 1,466

BRIDGE STREET

Good

Over: NORFOLK SOUTHERN

250 NORTH OF SR 993, Westmoreland, PA

Built 1996 Load: 52.6 t ADT: 920

52nd Street

Good

Over: SEPTA

S of Baltimore Ave 27G13, Philadelphia, PA

Built 1903 Load: 52.6 t ADT: 9,300

SR 46-PA 46

Good

Over: WALCOTT CREEK

CROSBY, McKean, PA

Built 1997 Load: 52.6 t ADT: 1,304

SR3031

Good

Over: AULTMANS RUN

JACKSONVILLE NO.3, Indiana, PA

Built 1997 Load: 52.6 t ADT: 50

JEFFERSON STREET

Good

Over: OVER CONNEAUT CREEK

JEFFERSON ST. CONNTVLLE., Crawford, PA

Built 1998 Load: 52.6 t ADT: 318

PA 0274 SR 0274

Good

Over: MUDDY RUN

LOYSVILLE, Perry, PA

Built 1998 Load: 52.6 t ADT: 2,957

T-622 BRANCH RD

Good

Over: EAST BRANCH MAHONING CR

0.7 MILES SOUTH OF SR410, Jefferson, PA

Built 1999 Load: 52.6 t ADT: 45

SR 99 - I 99

Good

Over: T-425

4 MI SE BELLEFONTE, Centre, PA

Built 2000 Load: 52.6 t ADT: 8,805

SR 79 SB

Good

Over: OVER WEST 32ND STREET

CITY OF ERIE, Erie, PA

Built 2001 Load: 52.6 t ADT: 12,845

SR 99-I 99

Good

Over: SR 3043

0.5 MI E OF STATE COLLEGE, Centre, PA

Built 2002 Load: 52.6 t ADT: 13,842

SR 328

Good

Over: HAMMOND CREEK

1.5 MI. W. OF MILLERTON, Tioga, PA

Built 2002 Load: 52.6 t ADT: 1,624

COOKS RUN ROAD

Good

Over: ROCK RUN

3.4 MI NW OF SR 120, Clinton, PA

Built 2001 Load: 52.6 t ADT: 20

I-81 SR 0081

Good

Over: MOUNTAIN RUN

0.5 MI N. OF SCOTLAND, Franklin, PA

Built 2003 Load: 52.6 t ADT: 43,367

SR 290 WINTERGREEN

Good

Over: OVER FOUR MILE CREEK

HARBORCREEK TOWNSHIP, Erie, PA

Built 2003 Load: 52.6 t ADT: 8,280

SR 99 I-99

Good

Over: LAUREL AND OLIVER RUNS

2 MILES WEST PORT MATILDA, Centre, PA

Built 2003 Load: 52.6 t ADT: 7,046

SR 6 S.MAIN ST.

Good

Over: OVER FRENCH CREEK S.BR.

UNION CITY BORO, Erie, PA

Built 1910 Load: 52.6 t ADT: 6,877

SR3020 OLD LANC.PK

Good

Over: US 222

OLD LANCASTER PIKE, Berks, PA

Built 2004 Load: 52.6 t ADT: 1,293

SR 3002 EB

Good

Over: SR 6022

4 MI W OF LEWISTOWN EXIT, Mifflin, PA

Built 2005 Load: 52.6 t ADT: 4,314

SR 0029 TR 29

Good

Over: HARVEYS CREEK

PLYMOUTH TWP 1.8M N TR 11, Luzerne, PA

Built 2005 Load: 52.6 t ADT: 3,789

KELLERS CHURCH RD

Good

Over: CABIN RUN

PLUMSTEADVILLE 2810E07, Bucks, PA

Built 2006 Load: 52.6 t ADT: 1,932

Showing 19,251-19,300 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.