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

BRANCH STREET

Fair

Over: LITTLE ROARING BROOK

860 FT FROM E. DRINKER ST, Lackawanna, PA

Built 1979 Load: 99.8 t ADT: 10

REYNOLDS AVENUE

Fair

Over: WESTERN MARYLAND RAILROA

0.1 MILES NORTH OF U.S. R, Adams, PA

Built 1958 Load: 99.9 t ADT: 1,448

FR 145

Good

Over: BIG SALMON CREEK

1.3 MILES N OF SR 3004, Forest, PA

Built 2023 ADT: 50

Campground Road

Good

Over: Brush Run

Shenango Day Use Area, Mercer, PA

Built 1975 ADT: 50

KRAMER No 113

Good

Over: MUD RUN

1 MI. SW. OF ROHRSBURG, Columbia, PA

Built 1881 Load: 0.9 t ADT: 10

T-675 FRAZIER BR.

Good

Over: LITTLE MUNCY CREEK

1.9 MI SW OF LAIRDSVILLE, Lycoming, PA

Built 1928 Load: 1.8 t ADT: 11

SIEGRIST RD

Good

Over: CHIQUES CREEK

3/4 MI NW OF SR 4001, Lancaster, PA

Built 1885 Load: 2.7 t ADT: 570

PENN GRANT RD

Good

Over: PEQUEA CREEK

2200 FT EAST OF SR 3028, Lancaster, PA

Built 1875 Load: 2.7 t ADT: 1,200

MIDDLE CREEK ROAD

Good

Over: COCALICO CREEK

1/2 MILE NW OF SR 1018, Lancaster, PA

Built 2010 Load: 2.7 t ADT: 50

EAST WASHINGTON ST

Good

Over: W BR TUNUNGWANT CREEK

350 FT EAST OF SR 346, McKean, PA

Built 1902 Load: 3.6 t ADT: 1,300

FIFTH STREET

Good

Over: SANDY LICK CREEK

0.2 MILES WEST OF SR322, Jefferson, PA

Built 1954 Load: 4.5 t ADT: 673

SR 3001

Good

Over: SHERMANS CREEK

1 MI.E. OF NEW GERMANTOWN, Perry, PA

Built 1959 Load: 5.4 t ADT: 50

CREEK RD. T-427

Good

Over: CONODOGUINET CREEK

3 W CRLSLE/L.FRK/W.PNBR, Cumberland, PA

Built 1896 Load: 6.4 t ADT: 439

Weaver Road T-341

Good

Over: Conococheague Creek

4.5 MI SW of Greencastle, Franklin, PA

Built 1849 Load: 8.2 t ADT: 5

T-443 MILL ROAD

Good

Over: SHAWNEE CREEK

1 MI.SW.OF SCHELLSBURG, Bedford, PA

Built 1866 Load: 10.0 t ADT: 50

T841 SAGERVILLE RD

Good

Over: CONOY CREEK

1300 NE OF SR 4004, Lancaster, PA

Built 1994 Load: 10.9 t ADT: 260

BRIDGE 1202 T-807

Good

Over: OVER MILL CREEK

MILL CREEK RD. MILLCK TWP, Mercer, PA

Built 1974 Load: 10.9 t ADT: 122

FR 602

Good

Over: WILLOW CREEK

WILLOW BAY REC AREA, McKean, PA

Built 1965 Load: 11.7 t ADT: 75

BUCKS ROAD

Good

Over: EAST BR.PERKIOMEN CREEK

0.9 Mi NE SR313 2809-C6, Bucks, PA

Built 1895 Load: 11.8 t ADT: 50

SR 0011 TR 11

Good

Over: SUSQUEHANNA RIVER

GREAT BEND TP JCT SR1010, Susquehanna, PA

Built 2002 Load: 11.8 t ADT: 7,397

SR 3042

Good

Over: SR 99-I 99

5.5 MI WEST STATE COLLEGE, Centre, PA

Built 2006 Load: 12.7 t ADT: 2,732

SR 2034 ROGERS FRY

Good

Over: OVER SR 79 NB/SB

HAYFIELD TOWNSHIP, Crawford, PA

Built 1969 Load: 13.6 t ADT: 361

BRIDGE 904 T-685

Good

Over: OVER OTTER CREEK

BUSH RD OTTER CREEK TWP., Mercer, PA

Built 1975 Load: 13.6 t ADT: 109

SR 642

Good

Over: W.B. SUSQUEHANNA RIVER

MILTON/ISLAND RIVER BR., Northumberland, PA

Built 1987 Load: 13.6 t ADT: 11,917

SR 3008

Good

Over: TUSCARORA CREEK

1 MILE SOUTHWEST OF PORT, Juniata, PA

Built 2008 Load: 13.6 t ADT: 295

SR 5 WEST 12TH

Good

Over: OVER LINCOLN AVENUE

CITY OF ERIE, Erie, PA

Built 1983 Load: 14.5 t ADT: 14,405

SR 487

Good

Over: D&H RR NB SUSQUEHANNA R.

EAST BLOOMSBURG RIVER BR., Columbia, PA

Built 1987 Load: 15.4 t ADT: 6,294

SR 4008 FISHER RD.

Good

Over: OVER CONNEAUT CREEK

SPRING TOWNSHIP, Crawford, PA

Built 1965 Load: 15.4 t ADT: 357

SR 3012(LR 39046)

Good

Over: IRON RUN

SCHANTZ ROAD, Lehigh, PA

Built 1960 Load: 15.4 t ADT: 11,079

BRIDGE 118 T-372

Good

Over: OVER BIG RUN

N.MAYVILLE RD. GREENE TWP, Mercer, PA

Built 1976 Load: 15.4 t ADT: 201

SCHOOL STREET

Good

Over: OVER STILLWATER CREEK

SUGARGROVE BOROUGH, Warren, PA

Built 1997 Load: 15.4 t ADT: 400

Shorb Mill Road

Good

Over: Middle Creek

2.5 SW GREENMT.MIDDLE CRK, Adams, PA

Built 1905 Load: 16.3 t ADT: 25

US 209 & PA 33

Good

Over: MCMICHAEL CREEK

S.END OF SNYDERSVIL RAMPS, Monroe, PA

Built 1963 Load: 16.3 t ADT: 44,976

BRIDGE 503 T-820

Good

Over: OVER NORTH DEER CREEK

DEER CREEK RD DEER CREEK, Mercer, PA

Built 1975 Load: 17.2 t ADT: 58

BRIDGE 1308 T-651

Good

Over: OVER CHESTNUT CREEK

COLT ROAD PYMATUNING TWP., Mercer, PA

Built 1975 Load: 17.2 t ADT: 202

Waynesburg Road

Good

Over: MIDDLE WHEELING CREEK

40 North of Twp Rd 360, Washington, PA

Built 2006 Load: 17.2 t ADT: 50

SR 28 SB

Good

Over: KITTANNING PIKE SEITZ RU

RT 28 SB OVER KITTANNING, Allegheny, PA

Built 1963 Load: 18.1 t ADT: 37,663

MIFFLIN RD

Good

Over: SR 8059(RAMP A)

GLENWOOD INTERCHANGE, Allegheny, PA

Built 1967 Load: 18.1 t ADT: 16,076

PA 283; SR 0300

Good

Over: SWATARA CR;M&H R/R;T-496

2 MI. N. MIDDLETOWN, Dauphin, PA

Built 1971 Load: 18.1 t ADT: 21,923

T-667 CTY BR #12

Good

Over: TIOGA RIVER

BOROUGH OF TIOGA, Tioga, PA

Built 1975 Load: 18.1 t ADT: 110

SR 3007 ROCKDALE

Good

Over: OVER SR 80 EB/WB

SCRUBGRASS TOWNSHIP, Venango, PA

Built 1965 Load: 18.1 t ADT: 253

Ashburner Street

Good

Over: AMTRAK (NE CORRIDOR)

W of State Road 19J09, Philadelphia, PA

Built 1939 Load: 18.1 t ADT: 5,300

Manayunk Avenue

Good

Over: Shurs Lane

over Shurs Lane 16J02, Philadelphia, PA

Built 1894 Load: 18.1 t ADT: 2,500

SR 6 - US 6

Good

Over: POTATO CREEK

SMETHPORT BORO. LINE, McKean, PA

Built 2007 Load: 18.1 t ADT: 5,852

SR 51

Good

Over: 04136 641 RP.A & LOCAL

750 NORTH ROCH.MONACA BR, Beaver, PA

Built 1965 Load: 19.1 t ADT: 9,770

SR 4007 (C-101)

Good

Over: RAYSTOWN BR.JUNIATA RIV.

N. MANNS CHOICE(LOBSTOR), Bedford, PA

Built 1902 Load: 19.1 t ADT: 168

SR 222 SB(LR 157)

Good

Over: SACONY CREEK

NEAR PA737 EXIT, Berks, PA

Built 1972 Load: 19.1 t ADT: 11,598

1013 Good Hope Rd

Good

Over: I-81 SB; SR 0081

.5 MI. S. OF L.R. 569, Cumberland, PA

Built 1973 Load: 19.1 t ADT: 5,064

SR 3047

Good

Over: JUNIATA RIVER

SGT WILLIAM D PORT BRIDGE, Huntingdon, PA

Built 1986 Load: 19.1 t ADT: 4,667

T-437 (COLLEGE RD)

Good

Over: SOUTH BR TUNKHANNOCK CR

LAPLUME 500 WEST T-470, Lackawanna, PA

Built 1986 Load: 19.1 t ADT: 200

Showing 12,451-12,500 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.