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

CHURCHVILLE LANE

Fair

Over: CHURCHVILLE RSVR/3261-A1

NORTH OF HOLLAND 36A09, Bucks, PA

Built 1942 Load: 33.6 t ADT: 3,899

N. AMBLER STREET

Fair

Over: BRANCH OF TOHICKON CREEK

0.18 MI TO SR 0212 08B13, Bucks, PA

Built 1978 Load: 33.6 t ADT: 700

OLD EASTON ROAD

Fair

Over: NOCKAMIXON CREEK

AHLERS BRIDGE 2584-A3, Bucks, PA

Built 1804 Load: 33.6 t ADT: 100

ROCK RIDGE ROAD

Fair

Over: BEAVER CREEK

ROCK RIDGE ROAD 2584-H8, Bucks, PA

Built 1980 Load: 33.6 t ADT: 350

SR0038

Fair

Over: THORN CREEK

NORTH OF BUTLER, Butler, PA

Built 1947 Load: 33.6 t ADT: 5,411

SR0079 SB

Fair

Over: T302 TOLLGATE SCHOOL RD

SOUTH OF ZELIENOPLE, Butler, PA

Built 1962 Load: 33.6 t ADT: 17,867

SR0080 EB

Fair

Over: T-538 SQUAW VALLEY RD

GERWICK ROAD EB, Butler, PA

Built 1965 Load: 33.6 t ADT: 9,778

SR0080 WB

Fair

Over: T-538 SQUAW VALLEY RD

GERWICK ROAD WB, Butler, PA

Built 1965 Load: 33.6 t ADT: 10,140

SR0268

Fair

Over: BEAR CREEK

BRUIN BORO, Butler, PA

Built 1984 Load: 33.6 t ADT: 1,520

T-360 WELSH RD

Fair

Over: LITTLE CONNOQUEN CR

0.75 mi. N of SR 3030, Butler, PA

Built 1901 Load: 33.6 t ADT: 100

US 219

Fair

Over: PA 756 (ELTON ROAD)

OVER TR 756, Cambria, PA

Built 1964 Load: 33.6 t ADT: 25,839

T-407 Sportsman Rd

Fair

Over: NOELS CREEK

1 MI.NW.OF CASSANDRA, Cambria, PA

Built 1979 Load: 33.6 t ADT: 222

PA 248 (LR 163)

Fair

Over: SR 2002 (APPL.1461)

PA.248 OVER DELAWARE AVE., Carbon, PA

Built 1962 Load: 33.6 t ADT: 23,671

SR 45-PA 45

Fair

Over: ROARING RUN

SHINGLETOWN, Centre, PA

Built 1961 Load: 33.6 t ADT: 3,891

SR 45-US 322 BUS

Fair

Over: BRANCH SPRING CREEK

BOALSBURG, Centre, PA

Built 1961 Load: 33.6 t ADT: 14,439

SR 64-PA 64

Fair

Over: LITTLE FISHING CREEK

SNYDERTOWN, Centre, PA

Built 1958 Load: 33.6 t ADT: 4,048

SR 3011

Fair

Over: US 322-US 322

LEMONT, Centre, PA

Built 1985 Load: 33.6 t ADT: 8,191

SR 3025

Fair

Over: SPARROW RUN

HANNAH, Centre, PA

Built 1939 Load: 33.6 t ADT: 51

US 1 BY-PASS (NB)

Fair

Over: CHURCH ROAD

NEAR AVONDALE 46F04, Chester, PA

Built 1965 Load: 33.6 t ADT: 20,194

US 1 BY-PASS

Fair

Over: E.BRANCH RED CLAY CREEK

NR.KENNETT SQUARE 47F3, Chester, PA

Built 1965 Load: 33.6 t ADT: 23,485

SCHUYLKILL ROAD

Fair

Over: FRENCH CREEK

WEST PHOENIXVILLE 15A5, Chester, PA

Built 1940 Load: 33.6 t ADT: 18,111

ROUTE 30 BY-PASS

Fair

Over: HIKE/BIKE PATH

DOWNINGTOWN 20G13, Chester, PA

Built 1961 Load: 33.6 t ADT: 64,245

POTTSTOWN BY-PASS

Fair

Over: SCHUYLKILL ROAD

COVENTRY MALL 2D13, Chester, PA

Built 1954 Load: 33.6 t ADT: 18,832

TRAFFIC ROUTE 202

Fair

Over: KING ROAD

NEAR WEST CHESTER 22D13, Chester, PA

Built 1968 Load: 33.6 t ADT: 24,392

TRAFFIC ROUTE 202

Fair

Over: KING ROAD

NEAR WEST CHESTER 22D13, Chester, PA

Built 1968 Load: 33.6 t ADT: 25,031

US 202 BY-PASS

Fair

Over: LITTLE VALLEY CREEK

PAOLI 23G06, Chester, PA

Built 1966 Load: 33.6 t ADT: 92,313

PAOLI PIKE

Fair

Over: PHILA.ELECTRIC COMPANY

NEAR VALLEY FORGE 24C05, Chester, PA

Built 1967 Load: 33.6 t ADT: 10,713

YELLOW SPRINGS RD.

Fair

Over: VALLEY CR. 3365-G7

VALLEY FORGE PARK 16C13, Chester, PA

Built 1865 Load: 33.6 t ADT: 1,492

LINFIELD BRIDGE

Fair

Over: SCHUYLKILL RIVER

PARKERFORD 7E5, Chester, PA

Built 1932 Load: 33.6 t ADT: 5,576

FORGE ROAD

Fair

Over: US-1 BY-PASS

.7MI.N.PA INTERCH. 50K06, Chester, PA

Built 1968 Load: 33.6 t ADT: 1,084

STRASBURG ROAD

Fair

Over: OFFICERS RUN

NEAR BOYDS CORNER 26J7, Chester, PA

Built 1938 Load: 33.6 t ADT: 994

OLD STOTTSVILLE RD

Fair

Over: BRANCH BUCK RUN

NEAR STOTTSVILLE 27J9, Chester, PA

Built 1960 Load: 33.6 t ADT: 1,240

SCROGGY ROAD

Fair

Over: US-1 BY-PASS

.6MI.N.PA 472 INT. 43E13, Chester, PA

Built 1968 Load: 33.6 t ADT: 1,008

LITTLE CONESTOGA R

Fair

Over: BLACK HORSE CREEK

MARSH CREEK PARK 20D01, Chester, PA

Built 1973 Load: 33.6 t ADT: 6,285

STYER ROAD

Fair

Over: MARSH CREEK

UPPER UWCHLAN TWP. 12C13, Chester, PA

Built 1905 Load: 33.6 t ADT: 1,399

PA TPK (I-76)

Fair

Over: T-457

NEAR MARSH CREEK STATE PK, Chester, PA

Built 1950 Load: 33.6 t ADT: 46,178

PA TPK (I-76)

Fair

Over: T-466

NEAR TR113 & TR401 JCT, Chester, PA

Built 1950 Load: 33.6 t ADT: 47,120

PA TPK (I-76)

Fair

Over: SR 0401 LR 15139

NORTHEAST OF LIONVILLE, Chester, PA

Built 1950 Load: 33.6 t ADT: 47,120

SR1005

Fair

Over: CLARION RIVER

WEAVER MEM. BRIDGE, Clarion, PA

Built 1988 Load: 33.6 t ADT: 2,318

SR2009

Fair

Over: CHERRY RUN

CHERRY RUN CAMP NO.1, Clarion, PA

Built 1938 Load: 33.6 t ADT: 555

SR2009

Fair

Over: CHERRY RUN

CHERRY RUN CHURCH, Clarion, PA

Built 1938 Load: 33.6 t ADT: 306

SR 4015

Fair

Over: SR 80-I 80

1 MI E EXIT 101, Clearfield, PA

Built 1969 Load: 33.6 t ADT: 268

SR 80-I 80

Fair

Over: SR 2002

EXIT 192 CARROLL, Clinton, PA

Built 1970 Load: 33.6 t ADT: 9,395

SR 150-PA 150

Fair

Over: BEECH CREEK

BEECH CREEK BORO, Clinton, PA

Built 1935 Load: 33.6 t ADT: 4,091

SR 220-US 220

Fair

Over: PRIVATE DRIVE

MILL HALL, Clinton, PA

Built 1975 Load: 33.6 t ADT: 6,691

SR 220-US 220

Fair

Over: PRIVATE DRIVE

MILL HALL, Clinton, PA

Built 1975 Load: 33.6 t ADT: 6,918

S.R. 0487

Fair

Over: OVER FISHING CREEK

BOROUGH OF STILLWATER, Columbia, PA

Built 1930 Load: 33.6 t ADT: 3,739

S.R. 2012

Fair

Over: OVER ROARING CREEK

0.75 MI E OF MILL GROVE, Columbia, PA

Built 1908 Load: 33.6 t ADT: 237

SERENO ROAD

Fair

Over: LITTLE FISHING CREEK

3.5 MI WEST OF WALLER, Columbia, PA

Built 1962 Load: 33.6 t ADT: 103

SR 4037

Fair

Over: MUD RUN

1 MI W OF ROHRSBURG, Columbia, PA

Built 1938 Load: 33.6 t ADT: 526

Showing 5,301-5,350 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.