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 0084 I-84 EB

Good

Over: T-390 (SHINY MT RD)

PALMYRA TWP .6 M W TR 390, Pike, PA

Built 2021 Load: 43.4 t ADT: 7,355

S PARK ROAD

Good

Over: US 422

LOWER POTTSGROVE 3139G02, Montgomery, PA

Built 2023 Load: 43.4 t ADT: 194

PA 116; SR 0116

Good

Over: SILVER BROOK CREEK

1.0 MI EAST OF GETTYSBURG, Adams, PA

Built 1970 Load: 43.5 t ADT: 7,355

GILKESON RD

Good

Over: PAINTERS RUN

100N.W.OLD GILKESON RD., Allegheny, PA

Built 1963 Load: 43.5 t ADT: 23,354

MCKNIGHT RD

Good

Over: PERRY HIGHWAY-US 19

200 NORTH OF SR 4086, Allegheny, PA

Built 1953 Load: 43.5 t ADT: 9,788

HORNING RD

Good

Over: LICK RUN

LC04 LICK RUN NO. 4, Allegheny, PA

Built 1988 Load: 43.5 t ADT: 7,000

RAMP W

Good

Over: over S.B. (I-79)

RAMP W OVER I79 S.B., Allegheny, PA

Built 1975 Load: 43.5 t ADT: 4,534

SR0128

Good

Over: SR0028 NB&SB

SLATE LICK NO.2, Armstrong, PA

Built 1971 Load: 43.5 t ADT: 1,026

CANNELTON ROAD

Good

Over: DILWORTH RUN

500 SW OF SR 0051, Beaver, PA

Built 1955 Load: 43.5 t ADT: 1,936

PA 96

Good

Over: SMALLY SPRING

0.3 MI.N.OF BUFFALO MILLS, Bedford, PA

Built 1992 Load: 43.5 t ADT: 1,847

SR 4034

Good

Over: SCRUBGRASS CREEK

1 MI.W.OF IMLER, Bedford, PA

Built 1998 Load: 43.5 t ADT: 1,153

SR 4017(LR 06036)

Good

Over: IRISH CREEK

DAUBERVILLE, Berks, PA

Built 1991 Load: 43.5 t ADT: 2,934

US 22

Good

Over: GILLANS RUN

.5 MI.N.OF DUNCANSVILLE, Blair, PA

Built 1994 Load: 43.5 t ADT: 11,775

SR 1013

Good

Over: SINKING RUN

.75 MI.E.OF ARCH SPRING, Blair, PA

Built 1999 Load: 43.5 t ADT: 696

SR 2008

Good

Over: HALTER CREEK

36 FT. EAST OF SR 0036, Blair, PA

Built 1996 Load: 43.5 t ADT: 490

SR 3013

Good

Over: PINE RUN

.75 MI.N.OF SPROUL, Blair, PA

Built 1957 Load: 43.5 t ADT: 5,761

SR 4010 (17TH ST)

Good

Over: I-99 / US 220

0.1 MI. E. OF ALTOONA, Blair, PA

Built 1992 Load: 43.5 t ADT: 25,718

SR 0187

Good

Over: BULLARD CREEK

1 MI SO.OF ROME BORO, Bradford, PA

Built 1957 Load: 43.5 t ADT: 3,145

SR 1055

Good

Over: PARKS CREEK

1 MI. NORTH OF ROME BORO, Bradford, PA

Built 1961 Load: 43.5 t ADT: 399

Dunks Ferry Road

Good

Over: Poquessing Creek

at the City Limit, Philadelphia, PA

Built 1990 Load: 43.5 t ADT: 9,729

LANDISVILLE ROAD

Good

Over: PINE RUN

BUCKINGHAM TWP. 23D04, Bucks, PA

Built 2000 Load: 43.5 t ADT: 400

PA 56

Good

Over: CSA LINE

1.3 MILE EAST OF TR 403 S, Cambria, PA

Built 1972 Load: 43.5 t ADT: 19,827

SR 1001

Good

Over: HOWELLS RUN

.25 MI.E.OF EBENSBURG, Cambria, PA

Built 1999 Load: 43.5 t ADT: 2,288

SR 3048 WAS SR 869

Good

Over: SANDY RUN

1 MI.W.OF ST.MICHAEL, Cambria, PA

Built 1965 Load: 43.5 t ADT: 1,997

T330 PLUMMER ROAD

Good

Over: LAUREL RUN

.5 MI.N.OF SIDMAN, Cambria, PA

Built 2007 Load: 43.5 t ADT: 114

ROUTE 202 (NB)

Good

Over: AMTRAK;RAMP EB;DUNWOODY

SOUTH OF RT. 30 22D11, Chester, PA

Built 1969 Load: 43.5 t ADT: 24,392

SR2003

Good

Over: LEATHERWOOD CREEK

WEST BRINKERTON, Clarion, PA

Built 1941 Load: 43.5 t ADT: 555

SR 53-PA 53

Good

Over: BEAVER RUN

1 MI W OSCEOLA MILLS, Clearfield, PA

Built 1990 Load: 43.5 t ADT: 3,795

SR 80-I 80

Good

Over: TSR 342 & FISHING CREEK

2 MI E EXIT 173, Clinton, PA

Built 1969 Load: 43.5 t ADT: 9,634

SR 80-I 80

Good

Over: MT RIANSARES FORESTRY RD

2 MI W EXIT 185, Clinton, PA

Built 1968 Load: 43.5 t ADT: 9,024

SR 80-I 80

Good

Over: MT RIANSARES FORESTRY RD

2 MI W EXIT 185, Clinton, PA

Built 1968 Load: 43.5 t ADT: 8,204

SR 220-US 220

Good

Over: SR 150-PA 150

1 MILE SOUTH AVIS, Clinton, PA

Built 1976 Load: 43.5 t ADT: 9,262

RIANSARES ROAD

Good

Over: LONG RUN

1200 FT SOUTH OF SR 477, Clinton, PA

Built 2004 Load: 43.5 t ADT: 25

LT BR YOUNG W C RD

Good

Over: SHINGLE BRANCH

2.5 MI NO. OF GLEASONTON, Clinton, PA

Built 1997 Load: 43.5 t ADT: 20

SR 27 WASHINGTON

Good

Over: OVER LAKE CREEK TRIB

RANDOLPH TOWNSHIP, Crawford, PA

Built 1986 Load: 43.5 t ADT: 1,729

PA 581; SR 0581

Good

Over: SR 8048 RAMP A&B

INTERSECT. OF US11&PA 581, Cumberland, PA

Built 1995 Load: 43.5 t ADT: 65,351

I-81 NB; SR 0081

Good

Over: T-561 Blue Ridge Ave.

1 MI. S.E. LINGLESTOWN, Dauphin, PA

Built 1969 Load: 43.5 t ADT: 28,014

SHARON AVENUE

Good

Over: AMTRAK (MAIN LINE)

.3MI.S.OF US-13 35K08, Delaware, PA

Built 1989 Load: 43.5 t ADT: 8,113

MELROSE AVENUE

Good

Over: I-95; RAMPS; & CSX R.R.

.5 Mi N of PA-320 3807-D3, Delaware, PA

Built 1963 Load: 43.5 t ADT: 2,107

SR 4034

Good

Over: OVER CASCADE CREEK

CITY OF ERIE, Erie, PA

Built 1990 Load: 43.5 t ADT: 14,278

SR 1051

Good

Over: OPOSSUM RUN

DUNBAR TOWNSHIP, Fayette, PA

Built 1997 Load: 43.5 t ADT: 2,754

T-345

Good

Over: OVER TIONESTA CREEK

AT TOWN OF KELLETTVILLE, Forest, PA

Built 1995 Load: 43.5 t ADT: 50

PA 416;Mercersburg

Good

Over: LICKING CREEK

2 mi. NW of Welsh Run, Franklin, PA

Built 1990 Load: 43.5 t ADT: 2,235

SR 1003

Good

Over: TRIB CONOCOCHEAGUE

WOODSTOCK, Franklin, PA

Built 1970 Load: 43.5 t ADT: 5,072

SR 1001

Good

Over: STANDING STONE CREEK

CORNPROPSTS MILLS, Huntingdon, PA

Built 1940 Load: 43.5 t ADT: 391

T353 PINE GROVE RD

Good

Over: NORTH SPRING CREEK

1.0 MI.N.OF SALTILLO, Huntingdon, PA

Built 1995 Load: 43.5 t ADT: 134

T-660 OLD INDIANA

Good

Over: GHOST TOWN TRAIL

BTW SR2017 & T668, Indiana, PA

Built 1989 Load: 43.5 t ADT: 400

SR 8008-US 22 RAMP

Good

Over: DELAWARE CREEK

THOMPSONTOWN, Juniata, PA

Built 1974 Load: 43.5 t ADT: 308

SR 1086; T-965

Good

Over: US 222; SR 0222

0.75 MI.S. OF ADAMSTOWN, Lancaster, PA

Built 1975 Load: 43.5 t ADT: 349

PA 772; S State St

Good

Over: Conestoga River

S.Side of Brownstown, Lancaster, PA

Built 1955 Load: 43.5 t ADT: 11,389

Showing 17,401-17,450 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.