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

S 4TH STREET

Fair

Over: SHAWNEE RUN

300 FT SOUTH OF MILL ST, Lancaster, PA

Built 1850 Load: 32.7 t ADT: 1,030

N MOUNT JOY ST

Fair

Over: CONOY CREEK

800 FT NW OF SR 4008, Lancaster, PA

Built 1975 Load: 32.7 t ADT: 1,550

N POPLAR ST

Fair

Over: CONOY CREEK

350 FT NW OF SR 241, Lancaster, PA

Built 1950 Load: 32.7 t ADT: 1,030

EAST MARKET STREET

Fair

Over: SANTO DOMINGO CREEK

1800 FT E OF BROAD STREET, Lancaster, PA

Built 1960 Load: 32.7 t ADT: 210

FRONT STREET

Fair

Over: SANTO DOMINGO CREEK

1/2 MI EAST OF SR 501, Lancaster, PA

Built 1940 Load: 32.7 t ADT: 3,565

E STIEGEL ST

Fair

Over: CHIQUES CREEK

700 FT NE OF SR 772, Lancaster, PA

Built 1936 Load: 32.7 t ADT: 3,500

MAHONING AV

Fair

Over: JENKINS RUN

100 NORTH OF MALLORY RD, Lawrence, PA

Built 1953 Load: 32.7 t ADT: 5,246

ELLWOOD ROAD

Fair

Over: BIG RUN

AT ENTRANCE CASCADE PK, Lawrence, PA

Built 1904 Load: 32.7 t ADT: 26,842

CRONTON AVE

Fair

Over: MCCRACKENS RUN

750 E OF TWP.RD.488, Lawrence, PA

Built 1941 Load: 32.7 t ADT: 3,267

HARLANSBURG ROAD

Fair

Over: BR. SLIPPERY ROCK CREEK

200E.OF SR0019, Lawrence, PA

Built 1957 Load: 32.7 t ADT: 2,833

MAIN ST

Fair

Over: SPANGLER RUN

3/4 MI. S.E. OF SR 2001, Lawrence, PA

Built 1989 Load: 32.7 t ADT: 3,189

STATE ROAD

Fair

Over: HOTTENBAUGH RUN

300 SOUTH OF SR 1010, Lawrence, PA

Built 1941 Load: 32.7 t ADT: 1,598

MARKET ST

Fair

Over: MCLURES RUN

1959SOUTH OF SR 0208, Lawrence, PA

Built 1982 Load: 32.7 t ADT: 1,312

NESHANNOCK FALL RD

Fair

Over: OVER HETTENBAUGH RUN

285 NORTH OF TR 168, Lawrence, PA

Built 1913 Load: 32.7 t ADT: 150

EASTBROOK RD

Fair

Over: OVER HOTTENBAUGH RUN

SCOTT TOWNSHIP, Lawrence, PA

Built 1957 Load: 32.7 t ADT: 271

Plain Grove North

Fair

Over: JAMISON RUN

677 WEST OF SR 0079, Lawrence, PA

Built 1963 Load: 32.7 t ADT: 319

PENNSYLVANIA AVE

Fair

Over: BIG RUN

SHENANGO TWP.@ALBORN RD., Lawrence, PA

Built 1912 Load: 32.7 t ADT: 928

DARLINGTON RD

Fair

Over: WAMPUM RUN

0.75 MI.S.W.OF INTER W/18, Lawrence, PA

Built 1911 Load: 32.7 t ADT: 89

DARLINGTON RD

Fair

Over: WAMPUM RUN

0.5 MI.S.W.OF INTER W/18, Lawrence, PA

Built 1912 Load: 32.7 t ADT: 89

PA TPK (I-376)

Fair

Over: JENKINS RUN

NORTH BEAVER TWP., Lawrence, PA

Built 1992 Load: 32.7 t ADT: 19,742

PA TURNPIKE (I-76)

Fair

Over: N FORK LITTLE BEAVER CK

WEST OF NEW BEAVER, Lawrence, PA

Built 1952 Load: 32.7 t ADT: 21,767

HILLSVILLE RD

Fair

Over: COFFEE RUN

037027 MAHONING TWP, Lawrence, PA

Built 1985 Load: 32.7 t ADT: 200

RODGERS RD

Fair

Over: JAMISON RUN

BTW T600 & T508, Lawrence, PA

Built 2004 Load: 32.7 t ADT: 20

US 22; SR 0022

Fair

Over: RACCOON CREEK

1.5 MI.E. OF CO. LINE, Lebanon, PA

Built 1946 Load: 32.7 t ADT: 9,328

US 322 WB; SR 322

Fair

Over: PA 72 SB

1 MI.W. OF CORNWALL, Lebanon, PA

Built 1963 Load: 32.7 t ADT: 3,728

SR 4006

Fair

Over: SWATARA CREEK

.5 MI.S.E. MCGILLSTOWN, Lebanon, PA

Built 1936 Load: 32.7 t ADT: 500

SR 4013 PLEAS.VIEW

Fair

Over: TRIB RACCOON CREEK

0.75 MI.N.W. OF T.R. 22, Lebanon, PA

Built 1933 Load: 32.7 t ADT: 245

SR 3007 LR 38001

Fair

Over: PA TPK (I-76)

SOUTH LONDONDERRY TWP, Lebanon, PA

Built 1949 Load: 32.7 t ADT: 351

SR 3005 LR 38032

Fair

Over: PA TPK (I-76)

SOUTH LONDONDERRY TWP., Lebanon, PA

Built 1950 Load: 32.7 t ADT: 2,882

RUSSELL RD. T-430

Fair

Over: TRIB. SWATARA CREEK

.7 W HEILMANDA/TRIB SWATA, Lebanon, PA

Built 1980 Load: 32.7 t ADT: 300

ZINNS MILL ROAD

Fair

Over: SNITZ CREEK

1 N QUENTIN/SNITZ CREEK, Lebanon, PA

Built 1940 Load: 32.7 t ADT: 375

BURD-COLEMAN ST.

Fair

Over: SNITZ CREEK

COLEMAN ST OVER SNITZ CR., Lebanon, PA

Built 1930 Load: 32.7 t ADT: 450

MILL AVE.

Fair

Over: TULPEHOCKEN CREEK

MYERSTOWN/TULPEHOCKEN, Lebanon, PA

Built 1900 Load: 32.7 t ADT: 200

RAILROAD STREET

Fair

Over: TULPEHOCKEN CREEK

BETWEEN MUTH AND CENTER, Lebanon, PA

Built 1920 Load: 32.7 t ADT: 800

SR1002TILGHMAN/157

Fair

Over: LEHIGH RIVER CORMAN RR

TILGHMAN ST.VIADUCT, Lehigh, PA

Built 1929 Load: 32.7 t ADT: 21,798

UNION BLVD

Fair

Over: ABANDONED RAILROAD

EAST OF DAUPHIN STREET, Lehigh, PA

Built 1929 Load: 32.7 t ADT: 20,199

SR 1015 (LR 39035)

Fair

Over: RR ABANDONED

FRONT STREET ALLENTOWN, Lehigh, PA

Built 1910 Load: 32.7 t ADT: 21,385

SR 2020 (LR 39007)

Fair

Over: TRIB. TO SAUCON CREEK

EMMAUS RD.@ LIMEPORT PIKE, Lehigh, PA

Built 1940 Load: 32.7 t ADT: 914

SR 2027(LR 39001)

Fair

Over: LEIBERTS CREEK

LEIBERTSS GAP, Lehigh, PA

Built 1987 Load: 32.7 t ADT: 3,574

SR 3001(LR.39021)

Fair

Over: LITTLE LEHIGH CREEK

77 FT.S.OF LR39023, Lehigh, PA

Built 1929 Load: 32.7 t ADT: 8,678

SR 4010 (LR 39091)

Fair

Over: COPLAY CREEK

SANDSPRING ROAD, Lehigh, PA

Built 1949 Load: 32.7 t ADT: 4,120

SR 4028 (LR 39110)

Fair

Over: BRANCH OF JORDAN CREEK

MEMORIAL ROAD, Lehigh, PA

Built 1887 Load: 32.7 t ADT: 512

COPLAY CREEK RD

Fair

Over: COPLAY CREEK

EAST SIDE OF PA TURNPIKE, Lehigh, PA

Built 1988 Load: 32.7 t ADT: 120

PA TPK (I-476)

Fair

Over: T-665

SOUTH OF NEFFS BOROUGH, Lehigh, PA

Built 1955 Load: 32.7 t ADT: 30,563

SR0029 TR 29 NB&SB

Fair

Over: TWP RD ABAND. R/R CRK

HANOVER TWP 1 M S SR 2002, Luzerne, PA

Built 1969 Load: 32.7 t ADT: 13,826

I-80 EB

Fair

Over: NESCOPECK CREEK

BLACK CREEK TWP 4M W TR93, Luzerne, PA

Built 1965 Load: 32.7 t ADT: 14,038

SR 0080 I-80 EB

Fair

Over: OLEY CREEK

DENNISON TWP 3.4M E TR309, Luzerne, PA

Built 1966 Load: 32.7 t ADT: 10,916

SR 0080 I-80 WB

Fair

Over: OLEY CREEK

DENNISON TWP 5.3M W TR940, Luzerne, PA

Built 1966 Load: 32.7 t ADT: 11,043

SR 0081 I-81

Fair

Over: CATAWISSA CREEK

HAZLE TWP 1 M N CNTY LINE, Luzerne, PA

Built 1967 Load: 32.7 t ADT: 28,351

SR 0081 I-81

Fair

Over: STONY CREEK

HAZLE TWP 1 M S TR 93, Luzerne, PA

Built 1967 Load: 32.7 t ADT: 36,350

Showing 4,551-4,600 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.