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

I-83 NB; SR 0083

Fair

Over: US322&RE;I283S;RA;SR3001

EISENHOWER INTERCHANGE, Dauphin, PA

Built 1970 Load: 11.8 t ADT: 28,744

T-600 BENSON ROAD

Fair

Over: LEBOEUF CREEK

1.7 MI NE OF SR 0019, Erie, PA

Built 1975 Load: 11.8 t ADT: 152

SR 3009 Church Hil

Fair

Over: W BR CONOCOCHEAGUE

1 MI NE OF MERCERSBURG, Franklin, PA

Built 1968 Load: 11.8 t ADT: 1,460

TOWNSHIP ROAD 373

Fair

Over: SHANNON RUN

NW OF MINET, Greene, PA

Built 1909 Load: 11.8 t ADT: 40

T-476 ALLEN BRIDGE

Fair

Over: TWO LICK RESERVOIR

BTW T639 & T760, Indiana, PA

Built 1968 Load: 11.8 t ADT: 25

PA 23; Marietta PK

Fair

Over: US 30; SR 0030

Rohrstown, Lancaster, PA

Built 1966 Load: 11.8 t ADT: 9,860

SR 4007 HILL ST

Fair

Over: US 30; SR 0030

N OF MOUNTVILLE BORO, Lancaster, PA

Built 1965 Load: 11.8 t ADT: 1,877

T-479 OLD PIKE RD

Fair

Over: HAMMER CREEK

1/2 MI SOUTH OF SR 4008, Lancaster, PA

Built 1950 Load: 11.8 t ADT: 100

FAWN ROAD (T-508)

Fair

Over: SAMBO CREEK

1000 FT. NO. OF PA 447, Monroe, PA

Built 1958 Load: 11.8 t ADT: 575

T-481 W TANNERY ST

Fair

Over: N BR COWANESQUE RIVER

0.2 MI FROM RT 49, Potter, PA

Built 1951 Load: 11.8 t ADT: 50

T-625 BRNS.HILL RD

Fair

Over: BEAVER DAM CREEK

.5 MI.S.OF STOYSTOWN, Somerset, PA

Built 1900 Load: 11.8 t ADT: 150

HASSENPLUG BR.

Fair

Over: BUFFALO CREEK

N 4th STREET MIFFLINBURG, Union, PA

Built 1900 Load: 11.8 t ADT: 300

WHEAT ROAD

Fair

Over: SOUTH BRANCH MUDDY CREEK

2.4 MI W OF SR2069, York, PA

Built 1961 Load: 11.8 t ADT: 100

EAST LAKE ROAD

Fair

Over: BEAR CREEK

1 MI NORTH OF SR 115, Luzerne, PA

Built 1960 Load: 11.8 t ADT: 20

Greensward Road S

Fair

Over: Tr Little Nesh Cr

.16M SW of Golf Dr 3146F2, Bucks, PA

Built 1980 Load: 11.8 t ADT: 200

FR 244

Fair

Over: FARNSWORTH BRANCH

0.2 MILES N OF FR 154, Warren, PA

Built 1935 Load: 12.0 t ADT: 2

BUTLER ROAD

Fair

Over: LETORT SPRING RUN

MARSHALL RD & LETORT LN, Cumberland, PA

Built 1957 Load: 12.0 t ADT: 200

RUSSELL TAVERN RD

Fair

Over: CONEWAGO CREEK

2 SE ARENDTSVILLE/CONEWAG, Adams, PA

Built 1974 Load: 12.7 t ADT: 300

BERMUDIAN CR. ROAD

Fair

Over: BERMUDIAN CREEK

1.6NE SGL#249/BERMUD CRK, Adams, PA

Built 1973 Load: 12.7 t ADT: 150

CONSTITUTION BL

Fair

Over: SR 3016-FRANKLIN AVENUE

ALIQUIPPA OVER SR 3016, Beaver, PA

Built 1963 Load: 12.7 t ADT: 10,186

BERM LANE

Fair

Over: DELAWARE CANAL

SE OF UPPER BLACK EDDY, Bucks, PA

Built 1962 Load: 12.7 t ADT: 30

US 219

Fair

Over: PA 869 & SR 3048

OVER PA 869, Cambria, PA

Built 1965 Load: 12.7 t ADT: 15,267

SR 0857

Fair

Over: MOUNTAIN CREEK

GEORGES TOWNSHIP, Fayette, PA

Built 1967 Load: 12.7 t ADT: 4,937

INDIAN CABIN ROAD

Fair

Over: TOMS RUN

COOK FOREST STATE PARK, Forest, PA

Built 1954 Load: 12.7 t ADT: 75

SR 4008

Fair

Over: CRABAPPLE CREEK

RICHHILL TOWNSHIP, Greene, PA

Built 1915 Load: 12.7 t ADT: 159

T358 COVERED BR R

Fair

Over: SHADE CREEK

0.75 MI NW OF SHADE GAP, Huntingdon, PA

Built 1990 Load: 12.7 t ADT: 99

T-373 RUNK ROAD

Fair

Over: AUGHWICK CREEK

1.5 M.SW.OF SHIRLEYSBURG, Huntingdon, PA

Built 1911 Load: 12.7 t ADT: 211

T-612 MUSSER RD

Fair

Over: CROOKED CREEK

BTW T616 & T890, Indiana, PA

Built 1977 Load: 12.7 t ADT: 75

T-488 BLUE SPRUCE

Fair

Over: CROOKED CREEK

BTW T494 & SR4008, Indiana, PA

Built 1984 Load: 12.7 t ADT: 100

T-341 DAIRY RD

Fair

Over: LITTLE CONESTOGA CR TRIB

1000 WEST OF T-557, Lancaster, PA

Built 1968 Load: 12.7 t ADT: 775

KINGS CHAPEL RD

Fair

Over: SR 376 EB WB

1/2 MI. NORTH OF SR 4004, Lawrence, PA

Built 1970 Load: 12.7 t ADT: 1,371

T-720

Fair

Over: WEST BRANCH RUN

2.8 MI. SW OF UNITYVILLE, Lycoming, PA

Built 1936 Load: 12.7 t ADT: 50

T-562

Fair

Over: MILL CREEK

2.6 MI W. OF HUNTERSVILLE, Lycoming, PA

Built 1940 Load: 12.7 t ADT: 100

T350 BORDELL CROSS

Fair

Over: COLE CREEK

1000 FT N OF BORDELL RD, McKean, PA

Built 1915 Load: 12.7 t ADT: 120

SR 58 GROVE CITY

Fair

Over: OVER SR 79 NB / SB

FINDLEY TOWNSHIP, Mercer, PA

Built 1963 Load: 12.7 t ADT: 4,870

BRIDGE 2322 T-425

Fair

Over: OVER W. BR. LT.NESHANNOC

WISE ROAD HERMITAGE, Mercer, PA

Built 1975 Load: 12.7 t ADT: 75

HARRISON AVENUE

Fair

Over: TACONY CREEK

0.93M SW OF SR73 3371-A10, Montgomery, PA

Built 1958 Load: 12.7 t ADT: 415

ADAMS GROVE RD

Fair

Over: SHERMAN CREEK

1.0 SE BLAIN/SHERM/JCKSN, Perry, PA

Built 1904 Load: 12.7 t ADT: 75

SNOW HILL RD T-317

Fair

Over: BIG BUSHKILL CREEK

3.4 MILES WEST OF PA 402, Pike, PA

Built 1957 Load: 12.7 t ADT: 50

MILL STREET

Fair

Over: MILL CREEK

0.1 MI FROM RT 6&44, Potter, PA

Built 1975 Load: 12.7 t ADT: 300

T325 ENGLES MILL R

Fair

Over: PINEY RUN

1.1 MI.E.OF SALISBURY, Somerset, PA

Built 1915 Load: 12.7 t ADT: 20

T-707

Fair

Over: LAUREL RUN

0.75 MI NNW OF GLEN IRON, Union, PA

Built 1900 Load: 12.7 t ADT: 50

SR 0380 I-380 SB

Fair

Over: LEHIGH RIVER

LEHIGH TWP @ LACK CTY LN, Wayne, PA

Built 1967 Load: 12.7 t ADT: 9,992

SR 3072

Fair

Over: OIL CREEK

2 MILE SW OF SPRING GROVE, York, PA

Built 1977 Load: 12.7 t ADT: 7,443

FRONT STREET

Fair

Over: BENNETTS RUN

.03 M EAST OF SR0392/4022, York, PA

Built 1971 Load: 12.7 t ADT: 1,000

DREIBELBIS MILL RD

Fair

Over: PIGEON CREEK

INTERSECTION OF PA 662, Berks, PA

Built 1960 Load: 12.7 t ADT: 750

T568 Ravers Run Rd

Fair

Over: Ravers Run

500 SW SR26-Ravers R RD, Bedford, PA

Built 1997 Load: 12.7 t ADT: 100

T-892 Quarry Rd

Fair

Over: Quarry Haul Road

600 FT N of W Quarry Rd, Lancaster, PA

Built 1985 Load: 12.7 t ADT: 175

ACCESS ROAD

Fair

Over: DELAWARE RIVER

0.1 MILES FROM PA ROUTE 5, Pike, PA

Built 1848 Load: 12.7 t ADT: 170

FR 131

Fair

Over: MUDDY FORK

4.1 MILE FROM SR 3002, Elk, PA

Built 1933 Load: 13.3 t ADT: 10

Showing 251-300 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.