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-476)

Fair

Over: S.BR.STONY CREEK

NEAR CENTER SQUARE, Montgomery, PA

Built 1955 Load: 32.7 t ADT: 65,329

PA TPK (I-476)

Fair

Over: BR. TOWAMENCIN CRK

NEAR LANSDALE, Montgomery, PA

Built 1955 Load: 32.7 t ADT: 65,329

RAMPS B & C OFF

Fair

Over: GULPH CREEK / 34K04

GULPH MILLS INTERC3367F10, Montgomery, PA

Built 1950 Load: 32.7 t ADT: 12,805

SR 254

Fair

Over: OVER TRIB TO MUD CREEK

0.5 MI E WASHINGTONVILLE, Montour, PA

Built 1942 Load: 32.7 t ADT: 2,745

SR 254

Fair

Over: OVER TRIB TO MUD CREEK

1 MI E OF WASHINGTONVILLE, Montour, PA

Built 1942 Load: 32.7 t ADT: 1,315

SR 1009

Fair

Over: MIDDLE BR CHILLISQUAQ CR

4MI.NE.OF WASHINGTONVILLE, Montour, PA

Built 1923 Load: 32.7 t ADT: 99

SR 4003

Fair

Over: OVER LIMESTONE RUN

1 MI N OF LIMESTONEVILLE, Montour, PA

Built 1967 Load: 32.7 t ADT: 282

SR 4008

Fair

Over: TRB TO BR CHILLISQUAQ CR

1.0 MI S VILLAGE OF COMLY, Montour, PA

Built 1957 Load: 32.7 t ADT: 299

SR 4008

Fair

Over: CO LI BR CHILLISQUAQUE C

VILLAGE OF COMLY, Montour, PA

Built 1957 Load: 32.7 t ADT: 299

T-422 CTY BR # E

Fair

Over: LIMESTONE RUN

VILLAGE OF LIMESTONEVILLE, Montour, PA

Built 1913 Load: 32.7 t ADT: 100

T-362 CTY # 18

Fair

Over: MAUSES CREEK

0.9 MI. W. OF MAUSDALE, Montour, PA

Built 1915 Load: 32.7 t ADT: 25

JACOBS ALLEY

Fair

Over: SECHLER RUN

BORO OF DANVILLE, Montour, PA

Built 1975 Load: 32.7 t ADT: 100

ROONEY AVENUE

Fair

Over: SECHLER RUN

BORO OF DANVILLE, Montour, PA

Built 1945 Load: 32.7 t ADT: 500

US 22 (LR 772)

Fair

Over: TWP.LINE RD.(T-434)

US 22 OVER T-434, Northampton, PA

Built 1954 Load: 32.7 t ADT: 86,673

US 22 (LR 772)

Fair

Over: NORFOLK SOUTHERN RR

PA 191 INTERCHANGE, Northampton, PA

Built 1954 Load: 32.7 t ADT: 86,673

PA 248 (LR 175)

Fair

Over: TRIB.BUSHKILL CK.

25TH & NORTHAMPTON STS., Northampton, PA

Built 1954 Load: 32.7 t ADT: 19,793

PA 329 (LR 175)

Fair

Over: HOKENDAUQUA CREEK

NORTHAMPTON BORO LINE, Northampton, PA

Built 1909 Load: 32.7 t ADT: 12,964

DR.GEO.S.SMITH BRG

Fair

Over: LEHIGH RIVER

DR.GEORGE S. SMITH BRIDGE, Northampton, PA

Built 1912 Load: 32.7 t ADT: 20,009

PA 611(LR 517)

Fair

Over: JACOBY CREEK

PORTLAND, Northampton, PA

Built 1907 Load: 32.7 t ADT: 2,297

SR 2003 (LR 48007)

Fair

Over: FRYS RUN

DURHAM ROAD, Northampton, PA

Built 1857 Load: 32.7 t ADT: 763

SR 2016(LR 48121)

Fair

Over: I-78

CEDARVILLE RD., Northampton, PA

Built 1985 Load: 32.7 t ADT: 3,217

SR 2017 (LR 48019)

Fair

Over: TRIB.TO BUSHKILL CK.

0.5MI.N.OF WILSON BORO, Northampton, PA

Built 1942 Load: 32.7 t ADT: 5,948

SR 2019 (LR 48021)

Fair

Over: BUSHKILL CREEK

13TH STREET, Northampton, PA

Built 1886 Load: 32.7 t ADT: 14,418

SR 2023 (LR 165)

Fair

Over: BUSHKILL CREEK

NORTH THIRD STREET, Northampton, PA

Built 1894 Load: 32.7 t ADT: 11,054

SR 4004 (LR 48082)

Fair

Over: TRIB.TO MONOCACY CREEK

1 MI.W.OF NAZARETH, Northampton, PA

Built 1924 Load: 32.7 t ADT: 2,206

SR 4020(LR 48059)

Fair

Over: BERTSCH CREEK

MAPLE DR. @ BIRCH RD., Northampton, PA

Built 1889 Load: 32.7 t ADT: 1,152

SR 4022 (LR 175)

Fair

Over: LEHIGH CANAL

WALNUTPORT @ CANAL, Northampton, PA

Built 1969 Load: 32.7 t ADT: 11,115

SR 4025 (LR 48043)

Fair

Over: WEST BR.BUSHKILL CREEK

VILLAGE OF ALUTA, Northampton, PA

Built 1926 Load: 32.7 t ADT: 3,141

SR 4025 (LR 48043)

Fair

Over: WEST FORK CREEK

BUSHKILL CENTER RD., Northampton, PA

Built 1929 Load: 32.7 t ADT: 1,067

TOMAHAWK TRAIL

Fair

Over: HOKENDAUQUA CREEK

NW KREIDERSVILLE, Northampton, PA

Built 1909 Load: 32.7 t ADT: 100

TANGLEWOOD ROAD

Fair

Over: CATASAUQUA CREEK

.5 M. NORTH OF PA 329, Northampton, PA

Built 1966 Load: 32.7 t ADT: 200

SPRUCE DRIVE

Fair

Over: HOKENDAUQUA CREEK

1 MILE SOUTH OF PA 248, Northampton, PA

Built 1913 Load: 32.7 t ADT: 90

RICHARD GARR ROAD

Fair

Over: MUD RUN

0.5 M. NORTH OF SR 1002, Northampton, PA

Built 1911 Load: 32.7 t ADT: 150

WALKER ROAD

Fair

Over: HOKENDAUQUA CREEK

WEST OF SR 4005, Northampton, PA

Built 1911 Load: 32.7 t ADT: 150

ENGLER ROAD

Fair

Over: LITTLE BUSHKILL CREEK

E. OF PA 191, Northampton, PA

Built 1910 Load: 32.7 t ADT: 200

LAKE MINSI ROAD

Fair

Over: MARTINS CREEK

1.5 M. E OF NORTH BANGOR, Northampton, PA

Built 1974 Load: 32.7 t ADT: 200

SHADY LANE

Fair

Over: ALLEGHENY CREEK

N. OF HARTZELLS FERRY, Northampton, PA

Built 1908 Load: 32.7 t ADT: 150

SHADY LANE

Fair

Over: ALLEGHENY CREEK

N. OF HARTZELLS FERRY, Northampton, PA

Built 1946 Load: 32.7 t ADT: 150

BROAD STREET

Fair

Over: MONOCACY CK RR CITY ST

BROAD STREET, Northampton, PA

Built 1909 Load: 32.7 t ADT: 4,000

BUSHKILL STREET

Fair

Over: BUSHKILL CREEK

S OF SR 22 @ BUSHKILL DR, Northampton, PA

Built 1953 Load: 32.7 t ADT: 3,080

CANAL ROAD

Fair

Over: DELAWARE CANAL DIVERSION

SOUTH OF RAUBSVILLE, Northampton, PA

Built 1900 Load: 32.7 t ADT: 60

S.R. 11

Fair

Over: JOHNSONS RUN

1.5 MI NE OF NORTHD BORO, Northumberland, PA

Built 1942 Load: 32.7 t ADT: 11,601

SR 54

Fair

Over: TRIB.TO DELEWARE RUN

3.5 MI EAST OF DEWART, Northumberland, PA

Built 1958 Load: 32.7 t ADT: 2,296

SR 54

Fair

Over: TRIB SHAM CREEK

VILLAGE OF ELYSBURG, Northumberland, PA

Built 1920 Load: 32.7 t ADT: 9,304

SR 61

Fair

Over: OVER PAXINOS CREEK

VILLAGE OF PAXINOS, Northumberland, PA

Built 1947 Load: 32.7 t ADT: 6,530

S.R. 225

Fair

Over: MAHANTANGO CREEK

VILLAGE OF PILLOW, Northumberland, PA

Built 1975 Load: 32.7 t ADT: 2,731

SR 0405

Fair

Over: OVER WARRIOR RUN CREEK

1 MI S OF WATSONTOWN, Northumberland, PA

Built 1925 Load: 32.7 t ADT: 4,703

SR 901

Fair

Over: OVER SHAMOKIN CREEK

0.5 MI SW OF RANSHAW, Northumberland, PA

Built 1970 Load: 32.7 t ADT: 3,921

SR 901

Fair

Over: OVER COAL RUN

VILLAGE OF RANSHAW, Northumberland, PA

Built 1970 Load: 32.7 t ADT: 3,464

SR 1011

Fair

Over: OVER WARRIOR RUN

2.0 MI N OF TURBOTVILLE, Northumberland, PA

Built 1949 Load: 32.7 t ADT: 411

Showing 4,751-4,800 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.