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 4024 (APPL.745)

Fair

Over: TROUT CREEK

LEHIGH FURNACE, Lehigh, PA

Built 1933 Load: 33.6 t ADT: 2,780

SR 4025 (LR 39059)

Fair

Over: LYON CREEK

KISTLER ROAD, Lehigh, PA

Built 1949 Load: 33.6 t ADT: 351

CHAPEL AVENUE

Fair

Over: TROUT RUN

NORTH OF EMAUS AVE., Lehigh, PA

Built 1987 Load: 33.6 t ADT: 650

MAIN ST RAMP

Fair

Over: MONACACY CR.RR CONESTOGA

CITY OF BETHLEHEM, Lehigh, PA

Built 1920 Load: 33.6 t ADT: 1,000

SR4003 LR39042

Fair

Over: PA TPK (I-476)

NEAR ALLENTOWN OREFIELD, Lehigh, PA

Built 1955 Load: 33.6 t ADT: 4,899

I-81 SB

Fair

Over: BIG WAPWALLOPEN CREEK

DORRANCE TWP .2M N SR3010, Luzerne, PA

Built 1965 Load: 33.6 t ADT: 17,836

SR 0081 I-81 NB

Fair

Over: LITTLE WAPWALLOPEN CREEK

RICE TWP .9 M S SR 2042, Luzerne, PA

Built 1965 Load: 33.6 t ADT: 18,137

SR 3005

Fair

Over: BRANCH OF POND CREEK

CONGHAM TWP .3M S SR 3006, Luzerne, PA

Built 1956 Load: 33.6 t ADT: 134

SR 3016

Fair

Over: BLACK CREEK

BLACK CR TWP .6M N SR3038, Luzerne, PA

Built 1953 Load: 33.6 t ADT: 131

SR 3042 ZENITH RD

Fair

Over: NESCOPECK CREEK

NESCOPECK TWP 2M E SR3016, Luzerne, PA

Built 1960 Load: 33.6 t ADT: 318

SR 0044

Fair

Over: W. BR. SUSQUEHANNA RIVER

JERSEY SHORE TRUSS RVR BR, Lycoming, PA

Built 1933 Load: 33.6 t ADT: 4,639

SR 180 EBL

Fair

Over: T-852 BRUSHY RIDGE ROAD

2 MI E OF MONTOURSVILLE, Lycoming, PA

Built 1976 Load: 33.6 t ADT: 12,582

I -180 EB

Fair

Over: OVER MUNCY CREEK

1 MILE NW OF MUNCY, Lycoming, PA

Built 1973 Load: 33.6 t ADT: 8,591

SR 220

Fair

Over: OVER SR 3005

JERSEY SHORE, Lycoming, PA

Built 1968 Load: 33.6 t ADT: 9,367

REACH RD OVR 220

Fair

Over: US 220 NB AND SB

CITY OF WILLIAMSPORT, Lycoming, PA

Built 1971 Load: 33.6 t ADT: 3,466

SR 0220

Fair

Over: OVER ARCH STREET

CITY OF WILLIAMSPORT, Lycoming, PA

Built 1972 Load: 33.6 t ADT: 9,930

SR 0220

Fair

Over: OVER LICK RUN

1 MI NORTH OF TIVOLI, Lycoming, PA

Built 1924 Load: 33.6 t ADT: 2,842

S.R. 2051

Fair

Over: OVER CARPENTER RUN

3 MI.WEST OF HUNTERSVILLE, Lycoming, PA

Built 1947 Load: 33.6 t ADT: 620

SR8002 RAMP D 15SB

Fair

Over: OVER SR 180 EBL & WBL

CITY OF WILLIAMSPORT, Lycoming, PA

Built 1974 Load: 33.6 t ADT: 14,398

SR 60 NB BEAVER

Fair

Over: OVER T-369 HEWITT ROAD

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 Load: 33.6 t ADT: 6,644

SR 60 SB BEAVER

Fair

Over: OVER T-369 HEWITT ROAD

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 Load: 33.6 t ADT: 6,562

SR 62 FRANKLIN RD.

Fair

Over: OVER SR 79 NB/SB

JACKSON TOWNSHIP, Mercer, PA

Built 1965 Load: 33.6 t ADT: 3,537

SR 79 NB

Fair

Over: OVER SR 80 EB/WB

FINDLEY TOWNSHIP, Mercer, PA

Built 1965 Load: 33.6 t ADT: 7,292

SR 258 LAKE ROAD

Fair

Over: OVER SHENANGO RIVER TRIB

CLARK BOROUGH, Mercer, PA

Built 1965 Load: 33.6 t ADT: 1,202

SR 358 HADLEY RD.

Fair

Over: SHENANGO RIVER TR

OTTER CREEK TOWNSHIP, Mercer, PA

Built 1935 Load: 33.6 t ADT: 3,344

SR 1012 GLENN SCHL

Fair

Over: OVER LITTLE SANDY CREEK

MILL CREEK TOWNSHIP, Mercer, PA

Built 1966 Load: 33.6 t ADT: 163

SR 4020 SHKEYVILLE

Fair

Over: OVER MORRISON RUN

SANDY CREEK TOWNSHIP, Mercer, PA

Built 1966 Load: 33.6 t ADT: 1,275

BRIDGE 506 T-825

Fair

Over: OVER SCHOFIELDS RUN

SMOLA RD. DEER CREEK TWP, Mercer, PA

Built 1979 Load: 33.6 t ADT: 36

BRIDGE 2207 T-912

Fair

Over: OVER WOLF CREEK BRANCH

JACK ROAD WORTH TWP, Mercer, PA

Built 1938 Load: 33.6 t ADT: 34

SR 103-PA 103

Fair

Over: JACKS CREEK

LEWISTOWN BOROUGH, Mifflin, PA

Built 1965 Load: 33.6 t ADT: 2,347

SR 103-PA 103

Fair

Over: BRANCH JUNIATA RIVER

MATTAWANA, Mifflin, PA

Built 1952 Load: 33.6 t ADT: 847

SR 22-US 22

Fair

Over: TWP RD 315 & JACKS CREEK

LEWISTOWN, Mifflin, PA

Built 1958 Load: 33.6 t ADT: 14,029

I-80 WB (LR 1009)

Fair

Over: T-580(STONEY HOLLOW RD.)

4.5 MI.E.OF CARBON CO.LN., Monroe, PA

Built 1965 Load: 33.6 t ADT: 10,068

I-80 EB

Fair

Over: SR 4004(LR 45024)

0.5 MI.W.OF PA.715, Monroe, PA

Built 1962 Load: 33.6 t ADT: 22,497

I-80 WB

Fair

Over: SR 4004(LR 45024)

0.5 MI. W. OF PA 715, Monroe, PA

Built 1962 Load: 33.6 t ADT: 22,371

I-80 EB (LR 1002)

Fair

Over: SR 715(APPL.3759)

PA 715 INTERCHANGE, Monroe, PA

Built 1962 Load: 33.6 t ADT: 22,497

SR 80 WB (LR 1002)

Fair

Over: SR 715(APPL.3759)

PA 715 INTERCHANGE, Monroe, PA

Built 1962 Load: 33.6 t ADT: 22,371

PA 191 (LR 169)

Fair

Over: PARADISE CREEK

@ BROWNS HILL RD., Monroe, PA

Built 1930 Load: 33.6 t ADT: 5,745

SR 2004(LR 165)

Fair

Over: MCMICHAEL CREEK

GLEN BROOK ROAD, Monroe, PA

Built 1932 Load: 33.6 t ADT: 666

SR 4012(LR 45081)

Fair

Over: POCONO CREEK

WARNER ROAD, Monroe, PA

Built 1960 Load: 33.6 t ADT: 2,584

T-572

Fair

Over: PARADISE CREEK

100FT FROM INT OF RT 191, Monroe, PA

Built 1958 Load: 33.6 t ADT: 60

SR 8012 (EXIT 47)

Fair

Over: I-80 (LR 1002)

NINTH ST.EXIT 303(47), Monroe, PA

Built 1963 Load: 33.6 t ADT: 1,838

PHOENIX/COLLEGE RD

Fair

Over: NORMA RUN

YERKES 20B11/3253F3, Montgomery, PA

Built 1966 Load: 33.6 t ADT: 21,335

SKIPPACK PIKE

Fair

Over: BRANCH STONY RUN

CENTER SQ. 3256D4, Montgomery, PA

Built 1950 Load: 33.6 t ADT: 12,690

ROUTE 100

Fair

Over: MANATAWNY CREEK

POTTSTOWN 11D9/3026E10, Montgomery, PA

Built 1958 Load: 33.6 t ADT: 24,732

TRAFFIC ROUTE 100

Fair

Over: PINE FORD ROAD (LOCAL)

HALFWAY HOUSE 3026G5, Montgomery, PA

Built 1964 Load: 33.6 t ADT: 24,732

DEKALB PIKE

Fair

Over: BRANCH ABRAMS RUN/3366K6

SOUTH PA.TURNPIKE 28E13, Montgomery, PA

Built 1953 Load: 33.6 t ADT: 30,420

PA 309 BY-PASS

Fair

Over: PINE RUN

N. OF T-PIKE 3257H09, Montgomery, PA

Built 1958 Load: 33.6 t ADT: 64,729

POTTSTOWN EX (EB)

Fair

Over: TRAPPE ROAD

U. PROVIDENC 3253-A03, Montgomery, PA

Built 1976 Load: 33.6 t ADT: 31,365

POTTSTOWN EX (WB)

Fair

Over: TRAPPE ROAD

UPPER PROVIDENCE 3253-A03, Montgomery, PA

Built 1976 Load: 33.6 t ADT: 30,988

Showing 5,451-5,500 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.