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

T536 MASSEYBURG RD

Fair

Over: SHAVER CREEK

1.2 MI.SW.OF MASSEYBURG, Huntingdon, PA

Built 1900 Load: 31.8 t ADT: 79

SR0056

Fair

Over: CROOKED CREEK

WEST SHELOCTA, Indiana, PA

Built 1929 Load: 31.8 t ADT: 3,324

SR0119

Fair

Over: TRIB TO PICKERING RUN

GILGAL, Indiana, PA

Built 1971 Load: 31.8 t ADT: 4,149

T-539 FRYE CEMETER

Fair

Over: N BR LITTLE MAHONING CR

BTW T828 & SR1038, Indiana, PA

Built 1988 Load: 31.8 t ADT: 25

SR0080 EB

Fair

Over: SR0028 NB&SB

COUNTY HOME EB, Jefferson, PA

Built 1962 Load: 31.8 t ADT: 10,252

SR0080 WB

Fair

Over: SR0028 NB&SB

COUNTY HOME WB, Jefferson, PA

Built 1962 Load: 31.8 t ADT: 10,486

SR1012 (T-520)

Fair

Over: SR0080 WB

HATTEN ROAD WB, Jefferson, PA

Built 1962 Load: 31.8 t ADT: 100

SR 22-US 22

Fair

Over: TOWNSHIP ROAD 466

THOMPSONTOWN, Juniata, PA

Built 1972 Load: 31.8 t ADT: 9,602

SR 3019

Fair

Over: TUSCARORA CREEK

2 MI SW ACADEMIA, Juniata, PA

Built 1948 Load: 31.8 t ADT: 579

T-435

Fair

Over: LEININGERS RUN

80 SOUTH OF T-525, Juniata, PA

Built 1930 Load: 31.8 t ADT: 50

T-408 Centerville

Fair

Over: US 30

0.75 mi.S. of Centerville, Lancaster, PA

Built 1965 Load: 31.8 t ADT: 24,356

1070 Stone Quarry

Fair

Over: US 222 at 0820 2646

0.5 MI.S. OF PA 772, Lancaster, PA

Built 1972 Load: 31.8 t ADT: 897

PA 272; Oregon Pk

Fair

Over: SHIRKS RUN

S OF OREGON MANHEIM TP, Lancaster, PA

Built 1970 Load: 31.8 t ADT: 9,664

PA-283 EB; SR 0300

Fair

Over: SR 4025; Cloverleaf Rd.

PA 283 & L.R. 36004, Lancaster, PA

Built 1969 Load: 31.8 t ADT: 24,666

PA 283 WB; SR 0300

Fair

Over: SR 4025; CLOVERLEAF RD

PA 283 AND L.R. 36004, Lancaster, PA

Built 1969 Load: 31.8 t ADT: 25,164

PA 283 EB; SR 0300

Fair

Over: LITTLE CHIQUES CREEK

1 MI.N. OF MT. JOY, Lancaster, PA

Built 1968 Load: 31.8 t ADT: 24,666

PA 283 WB; SR 0300

Fair

Over: LITTLE CHIQUES CREEK

1 MI. N. OF MT. JOY BORO, Lancaster, PA

Built 1968 Load: 31.8 t ADT: 25,164

PA 441; SR 0441

Fair

Over: SNITZ CREEK

1.5 MI. S.E. OF FALMOUTH, Lancaster, PA

Built 1929 Load: 31.8 t ADT: 3,451

PA 501; Furn. Hill

Fair

Over: HAMMER CREEK

BRUBAKERS, Lancaster, PA

Built 1930 Load: 31.8 t ADT: 11,766

LR 1124 INCOMPLETE

Fair

Over: SR 1003 HORSESHOE ROAD

1 MI S OF LEACOCK, Lancaster, PA

Built 1975 Load: 31.8 t

T-444 PEACH BTM RD

Fair

Over: PUDDLE DUCK CREEK

1 MI SW OF MCSPARRAN, Lancaster, PA

Built 1980 Load: 31.8 t ADT: 200

T901 CHURCHTOWN RD

Fair

Over: BRANDYWINE CREEK TRIB

1 MI SOUTH OF SR 322, Lancaster, PA

Built 1938 Load: 31.8 t ADT: 775

AMISH RD

Fair

Over: PEQUEA CREEK TRIB

0.7 MI NORTH OF SR 897, Lancaster, PA

Built 1976 Load: 31.8 t ADT: 625

MARKET ST

Fair

Over: NESHANNOCK CREEK

300WEST OF SR 0168, Lawrence, PA

Built 1962 Load: 31.8 t ADT: 3,195

WAMPUM VIADUCT BRG

Fair

Over: BEAVER RIVER RR & ROAD

WAMPUM VIADUCT BRIDGE, Lawrence, PA

Built 1989 Load: 31.8 t ADT: 1,065

BENJAMIN FRANKL HW

Fair

Over: SR 2001 BRANCH OF BIG RN

1.0 MI W OF SR 0065, Lawrence, PA

Built 1971 Load: 31.8 t ADT: 6,497

Lickdale Rd

Fair

Over: Swatara Creek

LICKDALE, Lebanon, PA

Built 1933 Load: 31.8 t ADT: 1,821

SR 4005 Thompson

Fair

Over: TRIB SWATARA CREEK

1 MI.E. UNION WATER WORKS, Lebanon, PA

Built 1938 Load: 31.8 t ADT: 1,216

T-601 JONESTOWN RD

Fair

Over: AIRE RUN

1E HARPER TAVRN/AIRE RUN, Lebanon, PA

Built 1926 Load: 31.8 t ADT: 1,000

PA 100(LR 672)

Fair

Over: TRIB. LYON CREEK

NEAR INTER. WITH LR 39072, Lehigh, PA

Built 1964 Load: 31.8 t ADT: 13,431

PA 143 (LR 285)

Fair

Over: TRIB. ONTELAUNEE CREEK

KINGS HIGHWAY LYNNPORT, Lehigh, PA

Built 1926 Load: 31.8 t ADT: 2,516

PA 143 (LR 285)

Fair

Over: BR. ONTELAUNEE CREEK

NEW TRIPOLI, Lehigh, PA

Built 1926 Load: 31.8 t ADT: 2,759

PA 145(LR 555)

Fair

Over: IRONTON RR/BIKE PATH

0.9 MI.S.OF PA329, Lehigh, PA

Built 1970 Load: 31.8 t ADT: 17,057

SR 309(LR 781)

Fair

Over: SR1002(TILGHMAN ST)LR443

TILGHMAN ST.INTERCHANGE, Lehigh, PA

Built 1958 Load: 31.8 t ADT: 53,981

SR 378(LR 297)

Fair

Over: SAUCON CREEK

1.5 MI.N.OF PA309, Lehigh, PA

Built 1935 Load: 31.8 t ADT: 14,200

PA 378 (LR1007NB)

Fair

Over: SR1002(UNION BLVD.)LR159

CENTER CITY EXIT, Lehigh, PA

Built 1967 Load: 31.8 t ADT: 18,432

SR 3004(LR.39022)

Fair

Over: TOAD CREEK

.1 MI. S. OF 39023 INTS., Lehigh, PA

Built 1964 Load: 31.8 t ADT: 1,238

SR 4008 (LR 39049)

Fair

Over: COPLAY CREEK

LEVANS ROAD, Lehigh, PA

Built 1962 Load: 31.8 t ADT: 3,994

KEYSTONE RD

Fair

Over: LITTLE LEHIGH CREEK

KECKS BRIDGE, Lehigh, PA

Built 1954 Load: 31.8 t ADT: 200

VALLEY ROAD

Fair

Over: LYON CREEK

SOUTH OF LYON VALLEY ROAD, Lehigh, PA

Built 1945 Load: 31.8 t ADT: 50

PA TPK (I-476)

Fair

Over: T-426

UPPER MILFORD TWP EMMAUS, Lehigh, PA

Built 1955 Load: 31.8 t ADT: 44,406

SR2012 LR39023

Fair

Over: PA TPK (I-476)

NEAR EMMAUS BOROUGH, Lehigh, PA

Built 1955 Load: 31.8 t ADT: 11,069

PA TPK (I-476)

Fair

Over: T-593; LIME KILN RD

NEAR ALLENTOWN OREFIELD, Lehigh, PA

Built 1955 Load: 31.8 t ADT: 30,563

TR 29 NB & SB

Fair

Over: SR 11 NB RAMP 8027

PLYMOUTH TWP OVER TR 11, Luzerne, PA

Built 1957 Load: 31.8 t ADT: 11,765

I-81 NB

Fair

Over: TURNBACK 3040 TWP ROAD

BUTLER TWP OVER TB 3040, Luzerne, PA

Built 1965 Load: 31.8 t ADT: 13,126

I-81 SB

Fair

Over: TURNBACK 3040 TWP ROAD

BUTLER TWP OVER TB 3040, Luzerne, PA

Built 1965 Load: 31.8 t ADT: 14,591

SR 0081 I-81 NB

Fair

Over: SR 3010

DORRANCE TWP OVER SR 3010, Luzerne, PA

Built 1965 Load: 31.8 t ADT: 18,137

I-81 NB

Fair

Over: BLYTHEBURN ROAD

RICE TWP 1 M S SR 2042, Luzerne, PA

Built 1964 Load: 31.8 t ADT: 18,137

SR 0081 I-81 SB

Fair

Over: BLYTHEBURN ROAD

RICE TWP 1 M S SR 2042, Luzerne, PA

Built 1965 Load: 31.8 t ADT: 17,836

SR 0309 TR 309

Fair

Over: LUZ CO RAIL AUTHORITY

LUZERNE BO .2 M N SR 1015, Luzerne, PA

Built 1980 Load: 31.8 t ADT: 37,929

Showing 3,701-3,750 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.