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

RAMP AB

Fair

Over: PA TPK (I-76)

EAST COCALICO TWP, Lancaster, PA

Built 1970 Load: 34.5 t ADT: 12,249

T-959

Fair

Over: PA TPK (I-76)

EAST COCALICO TWP, Lancaster, PA

Built 1949 Load: 34.5 t ADT: 200

LR 36050 SR 1046

Fair

Over: PA TPK (I-76)

1 MI.E. OF BOWMANSVILLE, Lancaster, PA

Built 1950 Load: 34.5 t ADT: 924

T700 POOL FORGE RD

Fair

Over: CONESTOGA RIVER TRIB

1/2 MI SOUTH OF SR 23, Lancaster, PA

Built 1963 Load: 34.5 t ADT: 720

SR 0376 WB

Fair

Over: OLD PULASKI RD

1/2 MI. SOUTH OF SR 8002, Lawrence, PA

Built 1971 Load: 34.5 t ADT: 7,259

HARLANSBURG ROAD

Fair

Over: JAMISON RUN

0.1 MI E OF STUDEBAKER RD, Lawrence, PA

Built 1985 Load: 34.5 t ADT: 3,053

MARTHA STREET

Fair

Over: US 422

1/2 MI. EAST OF SR 0168, Lawrence, PA

Built 1971 Load: 34.5 t ADT: 167

US 22; ALLENTOWN B

Fair

Over: DEEP RUN

1 MI.W. OF T.R. 343, Lebanon, PA

Built 1939 Load: 34.5 t ADT: 8,486

PA 143 (LR 285)

Fair

Over: TRIB. ONTELAUNEE CREEK

KINGS HIGHWAY WANAMAKERS, Lehigh, PA

Built 1926 Load: 34.5 t ADT: 1,941

PA 145(LR 175)

Fair

Over: FELLS CREEK

LAURYS, Lehigh, PA

Built 1926 Load: 34.5 t ADT: 14,432

SR 2029(LR.39002)

Fair

Over: HOSENSACK CREEK

PALM ROAD, Lehigh, PA

Built 1941 Load: 34.5 t ADT: 917

MILLRACE ROAD

Fair

Over: LITTLE LEHIGH CREEK

S OF SR 2012 W OF T-PIKE, Lehigh, PA

Built 1960 Load: 34.5 t ADT: 400

PA TPK (I-476)

Fair

Over: SR 2029 LR39002

2 MI N OF BUCKS CO LINE, Lehigh, PA

Built 1955 Load: 34.5 t ADT: 44,406

PA TPK (I-476)

Fair

Over: NFS RR

EMMAUS BOROUGH, Lehigh, PA

Built 1955 Load: 34.5 t ADT: 44,406

PA TPK (I-476)

Fair

Over: SR 0029 LR158

EMMAUS BORO, Lehigh, PA

Built 1954 Load: 34.5 t ADT: 44,406

PA TPK (I-476)

Fair

Over: TR. LITTLE LEHIGH CRK

EMMAUS BOROUGH, Lehigh, PA

Built 1955 Load: 34.5 t ADT: 39,061

SR 0029 TR 29

Fair

Over: NEW HANOVER STREET

SUGAR NTCH B .2M N SR2010, Luzerne, PA

Built 1969 Load: 34.5 t ADT: 18,628

I-80 WB

Fair

Over: NESCOPECK CREEK

BLACK CRK TWP 4M W TR 93, Luzerne, PA

Built 1965 Load: 34.5 t ADT: 14,651

TR 309 RAMPS E&F

Fair

Over: SR 1015 & MERCER AVE

KINGSTON BO OVER SR 1015, Luzerne, PA

Built 1980 Load: 34.5 t ADT: 37,929

SR 3016 TANK RD

Fair

Over: SR 0080 I-80 WB

NESCOPECK TWP OVR I-80 WB, Luzerne, PA

Built 1965 Load: 34.5 t ADT: 131

SR3021 TURNPIKE RD

Fair

Over: SR 0080 I-80 EB & WB

BUTLER TWP OVER I-80, Luzerne, PA

Built 1965 Load: 34.5 t ADT: 2,371

US TR 15 SBL

Fair

Over: OVER SR 14

VILLAGE OF TROUT RUN, Lycoming, PA

Built 1970 Load: 34.5 t ADT: 5,582

SR 0044

Fair

Over: NORFOLK SOUTHERN RR

VILLAGE OF ANTES FORT, Lycoming, PA

Built 1948 Load: 34.5 t ADT: 4,639

SR 0180 EB & WB

Fair

Over: OVER (S-C)LYCO.VALLEY RR

CITY OF WILLIAMSPORT, Lycoming, PA

Built 1971 Load: 34.5 t ADT: 37,477

S.R. 0220 NB

Fair

Over: OVER LYCOMING CREEK

CITY OF WILLIAMSPORT, Lycoming, PA

Built 1974 Load: 34.5 t ADT: 9,239

SR 2011

Fair

Over: OVER LAUREL RUN

4 MI SE OF CLARKSTOWN, Lycoming, PA

Built 1962 Load: 34.5 t ADT: 307

SR 3024 JOBS RUN

Fair

Over: LARRYS CREEK

1MI E.OF SALLADASBURG, Lycoming, PA

Built 1940 Load: 34.5 t ADT: 190

T668 MORELAND #337

Fair

Over: SUGAR RUN

2.3 MI EAST OF HUGHSVILLE, Lycoming, PA

Built 1940 Load: 34.5 t ADT: 50

SR 219-US 219

Fair

Over: BUFF & PITT RR/PRIVATE

2 MI N BRADFORD, McKean, PA

Built 1977 Load: 34.5 t ADT: 3,113

SR 346-PA 346

Fair

Over: MARILLA BROOK

5 MI W BRADFORD, McKean, PA

Built 1989 Load: 34.5 t ADT: 520

SR 79 NB

Fair

Over: OVER SR2014 B&LE MILL CR

FINDLEY TOWNSHIP, Mercer, PA

Built 1966 Load: 34.5 t ADT: 7,292

SR 79 SB

Fair

Over: OVER SR2014 B&LE MILL CR

FINDLEY TOWNSHIP, Mercer, PA

Built 1966 Load: 34.5 t ADT: 7,014

SR 2103 MILL BROOK

Fair

Over: OVER SR 79 NB/SB

JACKSON TOWNSHIP, Mercer, PA

Built 1966 Load: 34.5 t ADT: 113

SR 158 MERCER ROAD

Fair

Over: SR 80 EB & WB

EAST LACKAWANNOCK TWP., Mercer, PA

Built 1965 Load: 34.5 t ADT: 1,443

SR 3015 WANSACK RD

Fair

Over: TRIB TO SHENANGO RIVER

SHENANGO TOWNSHIP, Mercer, PA

Built 1962 Load: 34.5 t ADT: 453

BRIDGE 2603 T-682

Fair

Over: OVER OTTER CREEK

OAKLAND RD. FINDLEY TWP., Mercer, PA

Built 1965 Load: 34.5 t ADT: 570

SR 1002

Fair

Over: DRY CREEK

3 MI NE REEDSVILLE, Mifflin, PA

Built 1908 Load: 34.5 t ADT: 1,021

SR 2001

Fair

Over: BRANCH JACKS CREEK

1 MI NW MAITLAND, Mifflin, PA

Built 1961 Load: 34.5 t ADT: 1,573

T-392

Fair

Over: COFFEE RUN

2200FT NORTH OF SR 0655, Mifflin, PA

Built 1930 Load: 34.5 t ADT: 300

T-392

Fair

Over: COFFEE RUN

3200FT NORTH OF SR 0655, Mifflin, PA

Built 1930 Load: 34.5 t ADT: 300

I-80

Fair

Over: SR 2004(LR 165)

EXIT#306(49);DREHER AVE., Monroe, PA

Built 1959 Load: 34.5 t ADT: 49,103

US 209(LR 164 ALT)

Fair

Over: SR 2010(LR 45009)

US209 OVER HICKORY VALLEY, Monroe, PA

Built 1963 Load: 34.5 t ADT: 20,132

SR 3001(LR 45002)

Fair

Over: AQUASHICOLA CREEK

CHESTNUT RIDGE DRIVE, Monroe, PA

Built 1976 Load: 34.5 t ADT: 575

US 209 SB(SR 8013)

Fair

Over: I-80(LR 1002)

I80WB EX.302A(46A)TO209SB, Monroe, PA

Built 1963 Load: 34.5 t ADT: 8,460

SKIPPACK PIKE

Fair

Over: STONY CREEK

BETHEL HILL 3256A2, Montgomery, PA

Built 1950 Load: 34.5 t ADT: 12,690

SCHUYLKILL EXPWAY.

Fair

Over: RIGHTERS FERRY ROAD

W.CITY AVE.INTERCH.40J01, Montgomery, PA

Built 1952 Load: 34.5 t ADT: 123,458

COWPATH ROAD

Fair

Over: BRANCH NESHAMINY CREEK

HATFIELD 16J7/3032F08, Montgomery, PA

Built 1932 Load: 34.5 t ADT: 13,397

CHURCH ROAD

Fair

Over: PERKIOMEN CREEK 2804H07

UPPER HANOVER TWP. 02E10, Montgomery, PA

Built 1933 Load: 34.5 t ADT: 1,759

FAYETTE STREET

Fair

Over: SCHUYKILL RIVER NSRC

CONSHOHOCKEN 3368A09, Montgomery, PA

Built 1918 Load: 34.5 t ADT: 40,702

FAGLEYSVILLE ROAD

Fair

Over: WEST SWAMP CREEK

U. FREDERICK 3028C05, Montgomery, PA

Built 1854 Load: 34.5 t ADT: 1,565

Showing 5,851-5,900 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.