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 1006

Good

Over: Wallis Run

2 MILES W OF PROCTOR, Lycoming, PA

Built 2013 Load: 38.9 t ADT: 115

U. PLEASANT STR RD

Good

Over: NORTH PLEASANT STREAM

OUTSIDE VILLAGE OF MASTEN, Lycoming, PA

Built 2013 Load: 38.9 t ADT: 10

SALEM HOLLOW RD

Good

Over: NORTH FORK PINE CREEK

600 FROM INTER.W/02141, Allegheny, PA

Built 2013 Load: 38.9 t ADT: 11,206

PA 26

Good

Over: STANDING STONE CREEK

1.1 MILE NORTH OF SR 1011, Huntingdon, PA

Built 2013 Load: 38.9 t ADT: 1,718

SR 0070 EB

Good

Over: SR 0519

SR 0070 over SR 0519, Washington, PA

Built 2013 Load: 38.9 t ADT: 12,969

SR 0070 WB

Good

Over: SR 0519

SR 0070 over SR 0519, Washington, PA

Built 2013 Load: 38.9 t ADT: 12,751

BOLLES HILL ROAD

Good

Over: TRIB APALACHIN CREEK

500 N OF INTER W/ SR 858, Susquehanna, PA

Built 2014 Load: 38.9 t ADT: 250

Rutan Road T-461

Good

Over: PIGEON CREEK

200 SOUTH OF SR 2019, Washington, PA

Built 2014 Load: 38.9 t ADT: 300

SR 2023

Good

Over: BUFFALO CREEK

SALCO, Somerset, PA

Built 2014 Load: 38.9 t ADT: 176

SR 2036

Good

Over: Gorby Run

0.3 mi W from SR 0088, Washington, PA

Built 2014 Load: 38.9 t ADT: 1,319

SR 0068

Good

Over: SUGAR CREEK

1 Mi W SR 4002 Intersect., Armstrong, PA

Built 2014 Load: 38.9 t ADT: 2,617

BUTLER ST

Good

Over: FILL PED TRAIL

AT PGH ZOO, Allegheny, PA

Built 2014 Load: 38.9 t ADT: 14,090

PA 897; SR 0897

Good

Over: WHITE HORSE RUN

.5 MI S. OF WHITE HORSE, Lancaster, PA

Built 2014 Load: 38.9 t ADT: 1,973

T-402 KELLOG ROAD

Good

Over: SOUTH BRANCH TOWANDA CRK

0.5 MI NW OF SOUTH BRANCH, Bradford, PA

Built 2014 Load: 38.9 t ADT: 51

T865 Old Airport

Good

Over: Slate Creek

340 SE OF SR 2013, Westmoreland, PA

Built 2014 Load: 38.9 t ADT: 4,538

PA 669

Good

Over: CASSELMAN RIVER

SALISBURY, Somerset, PA

Built 2014 Load: 38.9 t ADT: 1,576

PA TPK (I-76)

Good

Over: T-388

Upper Mifflin Twp., Cumberland, PA

Built 2014 Load: 38.9 t ADT: 21,102

SR 0070

Good

Over: Wheeling & Lake Erie R/R

1.0 mi E from SR 0201, Westmoreland, PA

Built 2015 Load: 38.9 t ADT: 24,615

SR 0903

Good

Over: PA TPK (I-476)

6 mi S of Albrightsville, Carbon, PA

Built 2015 Load: 38.9 t ADT: 5,877

SR 4005

Good

Over: CANOE CREEK

2.1 Mi E SR 3007 Inter., Clarion, PA

Built 2015 Load: 38.9 t ADT: 90

SR 1027

Good

Over: NORTH FORK

1.3 Mi S SR 4005 Inter., Jefferson, PA

Built 2015 Load: 38.9 t ADT: 523

PA TPK (I-476)

Good

Over: T-437 (Pohopoco Dr.)

Mahoning Valley Interch., Carbon, PA

Built 2015 Load: 38.9 t ADT: 22,198

PA-997;Cumb. Hwy

Good

Over: Conodoguinet Creek

1 Mi. N. of Pleasant Hall, Franklin, PA

Built 2015 Load: 38.9 t ADT: 4,203

SR 555-PA 555

Good

Over: KERSEY RUN

WEEDVILLE, Elk, PA

Built 2015 Load: 38.9 t ADT: 1,545

SERVICE CREEK ROAD

Good

Over: SERVICE CREEK

1350 EAST OF SR 3022, Beaver, PA

Built 2015 Load: 38.9 t ADT: 211

SR 1033

Good

Over: WEST BRANCH CUSH CREEK

340Ft N SR 1056 Inter., Indiana, PA

Built 2015 Load: 38.9 t ADT: 328

Spring Lane Rd

Good

Over: Dogwood Run

1 NW Dillsburg, York, PA

Built 2016 Load: 38.9 t ADT: 800

Delaware Avenue

Good

Over: Frankford Creek

1 Mile N Lewis St 29J6, Philadelphia, PA

Built 2015 Load: 38.9 t ADT: 250

Elk Run Road

Good

Over: Elk Run

1 MI S OF WATROUS, Tioga, PA

Built 2016 Load: 38.9 t ADT: 428

LowerSwiftwater Rd

Good

Over: Paradise Creek

1.2 M. E. OF PA 314, Monroe, PA

Built 2016 Load: 38.9 t ADT: 330

U.S. 202

Good

Over: CONESTOGA ROAD (PA401)

1.5 MI. N. US30 3473K02, Chester, PA

Built 2016 Load: 38.9 t ADT: 85,474

PALO ALTO RD

Good

Over: POWDER RUN

.5 MI.E.OF GLADDENS, Somerset, PA

Built 2016 Load: 38.9 t ADT: 263

SR 0715 SH

Good

Over: McMichael Creek

1 M. N. OF BRODHEADSVILLE, Monroe, PA

Built 2016 Load: 38.9 t ADT: 4,326

SR 4041 (Midway)

Good

Over: I-78 (LR 141)

Midway Exit, Berks, PA

Built 2016 Load: 38.9 t ADT: 1,718

Laurel Road

Good

Over: Laurel Run

VILLAGE OF LAURELTON, Union, PA

Built 2016 Load: 38.9 t ADT: 941

SR 2008

Good

Over: Kreutz Creek

1 Mile South of Hellam, York, PA

Built 2016 Load: 38.9 t ADT: 389

Britain Church Rd

Good

Over: LITTLE CONOWINGO CRK

1MI NOF NEW TEXAS, Lancaster, PA

Built 2016 Load: 38.9 t ADT: 256

SR 4018 (Appl 745)

Good

Over: Trout Creek

Main St. (Emerald), Lehigh, PA

Built 2017 Load: 38.9 t ADT: 1,698

SR 1018

Good

Over: SOUTH BR EQUINUNK CREEK

MACHESTR TP @ JCT SR 1023, Wayne, PA

Built 2016 Load: 38.9 t ADT: 155

SR 4011 (LR 06017)

Good

Over: I-78 (LR 141)

Shartlesville Exit, Berks, PA

Built 2017 Load: 38.9 t ADT: 3,439

Table Rock Road

Good

Over: CONEWAGO CREEK

NORTH OF TABLE ROCK, Adams, PA

Built 2018 Load: 38.9 t ADT: 1,926

Melcroft Rd

Good

Over: CHAMPION CREEK

SALTLICK TOWNSHIP, Fayette, PA

Built 2018 Load: 38.9 t ADT: 1,470

Castile Run Rd

Good

Over: South Fork Ten Mile Cr

JEFFERSON T & CLARKSVILLE, Greene, PA

Built 2019 Load: 38.9 t ADT: 1,641

Marietta Ave

Good

Over: CHIQUES CREEK

2 MI EAST OF MARIETTA, Lancaster, PA

Built 2018 Load: 38.9 t ADT: 3,159

GROSSTOWN ROAD

Good

Over: Manatawny Creek

NW POTTSTOWN 11B6/302, Montgomery, PA

Built 2017 Load: 38.9 t ADT: 2,572

SR 957

Good

Over: Little Brokenstraw Creek

FREEHOLD TOWNSHIP, Warren, PA

Built 2017 Load: 38.9 t ADT: 1,445

SENECA SCHOOL RD

Good

Over: LIT CONNOQUENESSING CR

SENECA SCHOOL, Butler, PA

Built 2017 Load: 38.9 t ADT: 3,018

Mahood Rd (SR4002)

Good

Over: B & LE RR

SOUTH OF QUEEN JCT., Butler, PA

Built 2018 Load: 38.9 t ADT: 1,111

FOREST HILLS DR

Good

Over: LAUREL RUN

1 MI EAST OF SR 869, Cambria, PA

Built 2018 Load: 38.9 t ADT: 2,788

PA TPK (I-76)

Good

Over: T-501

North Middleton Twp., Cumberland, PA

Built 2017 Load: 38.9 t ADT: 21,102

Showing 15,751-15,800 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.