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

T-912 BUCHLAND RD

Good

Over: PEQUEA CREEK

800 FEET SE OF T-908, Lancaster, PA

Built 1998 Load: 43.5 t ADT: 620

CHESTNUT STREET

Good

Over: HAZEL DYKE

CHESTNUT ST.HAZEL DYKE, Lebanon, PA

Built 1978 Load: 43.5 t ADT: 2,000

SOUTH 12TH STREET

Good

Over: HAZEL DYKE CHANNEL

NEAR WALNUT ST INTERSECT, Lebanon, PA

Built 1981 Load: 43.5 t ADT: 2,000

SR 0015 NBL&SBL

Good

Over: OVR MEMORIAL AVE SR 3021

CITY OF WILLIAMSPORT, Lycoming, PA

Built 1974 Load: 43.5 t ADT: 28,748

US 15 NB

Good

Over: TROUT RUN & PRIVATE DRVE

.5 MI N OF TROUT RUN, Lycoming, PA

Built 1970 Load: 43.5 t ADT: 6,017

SR 220 SBL

Good

Over: OVER PINE CREEK

CLINTON-LYCOMING CO LINE, Lycoming, PA

Built 1968 Load: 43.5 t ADT: 9,314

SR 2069

Good

Over: LITTLE MUNCY CREEK

4 MI SW OF LAIRDSVILLE, Lycoming, PA

Built 1904 Load: 43.5 t ADT: 40

T-842

Good

Over: GRAYS RUN

3.0 MI. SW OF MARSH HILL, Lycoming, PA

Built 1990 Load: 43.5 t ADT: 50

ON TSR 416

Good

Over: ANNIN CREEK

TURTLE POINT, McKean, PA

Built 1990 Load: 43.5 t ADT: 864

SR 3003

Good

Over: W BR CLARION RIVER

BURNING WELL, McKean, PA

Built 1990 Load: 43.5 t ADT: 22

HOBSON PLACE

Good

Over: BENNETT BROOK

75 SOUTH OF SR 346, McKean, PA

Built 1995 Load: 43.5 t ADT: 200

ON TSR 328

Good

Over: TOWN RUN

1 MI NW MCVEYTOWN, Mifflin, PA

Built 1990 Load: 43.5 t ADT: 678

PA TPK RAMP N&O

Good

Over: PA TPK (I-276)

MID-COUNTY INTERCHANGE, Montgomery, PA

Built 1992 Load: 43.5 t ADT: 57,897

SR 0011

Good

Over: SECHLER RUN

3 MI E OF DANVILLE, Montour, PA

Built 1992 Load: 43.5 t ADT: 11,986

S.R. 1009

Good

Over: E. BR. CHILLISQUAQUE CK.

3 MI.NE.WASHINGTONVILLE, Montour, PA

Built 1909 Load: 43.5 t ADT: 99

SR 4013

Good

Over: OVER PLUM CREEK

1.5 MI SW OF STONINGTON, Northumberland, PA

Built 1939 Load: 43.5 t ADT: 1,313

LAUREL RUN ROAD

Good

Over: LAUREL RUN

1 MI NE OF MEADOWS RD, Perry, PA

Built 2000 Load: 43.5 t ADT: 40

SR 1016

Good

Over: FIRST FORK WHITE BRANCH

NORTH FORK, Potter, PA

Built 1990 Load: 43.5 t ADT: 204

SR 3003

Good

Over: FIRST FK SINNEMAHONING C

2 MI NE COSTELLO, Potter, PA

Built 1988 Load: 43.5 t ADT: 110

ON TSR 308

Good

Over: ALLEGHENY RIVER

1 MI E MINA, Potter, PA

Built 1989 Load: 43.5 t ADT: 219

SR 2009

Good

Over: FLAUGHERTY CREEK

WARREN MILLS, Somerset, PA

Built 1996 Load: 43.5 t ADT: 328

T850 SHAFFER RUN R

Good

Over: SHAFFERS RUN

2.6 MILE N OF FAIRHOPE, Somerset, PA

Built 1984 Load: 43.5 t ADT: 11

S.R. 2002

Good

Over: OVER MUNCY CREEK

3MI NE SONESTOWN-LAPORTE, Sullivan, PA

Built 1937 Load: 43.5 t ADT: 70

SR 0011 TR 11

Good

Over: TROWBRIDGE CREEK

GREAT BND TP .1M N SR1029, Susquehanna, PA

Built 1992 Load: 43.5 t ADT: 1,941

SR 1020

Good

Over: OVER ALDER RUN

1.25 MI N OF TROWBRIDGE, Tioga, PA

Built 1933 Load: 43.5 t ADT: 128

SR 1030

Good

Over: OVER CROOKED CREEK

BOROUGH OF TIOGA, Tioga, PA

Built 1974 Load: 43.5 t ADT: 687

T-392 (CTY BR 4)

Good

Over: LITTLE BUFFALO CREEK

0.9 MI NE OF KELLY POINT, Union, PA

Built 1991 Load: 43.5 t ADT: 100

WHITE DEER CRK RD

Good

Over: WHITE DEER CREEK

0.4 MI S OF SR 1010, Union, PA

Built 1996 Load: 43.5 t ADT: 25

SR 8 NEW ROUTE 8

Good

Over: OVER SR 6008

IRWIN TOWNSHIP, Venango, PA

Built 1990 Load: 43.5 t ADT: 5,067

SR 6 GRAND ARMY HY

Good

Over: OVER PROSSER CREEK

COLUMBUS TOWNSHIP, Warren, PA

Built 1996 Load: 43.5 t ADT: 2,797

SR 957

Good

Over: OVER STILLWATER CREEK

SUGAR GROVE TOWNSHIP, Warren, PA

Built 1953 Load: 43.5 t ADT: 1,276

SR 3006 LEDGDLE RD

Good

Over: ARIEL CREEK

SALEM TWP .8 M S SR 3008, Wayne, PA

Built 1956 Load: 43.5 t ADT: 582

SR 2015

Good

Over: BUTTERMILK CREEK

FALLS TWP @ INT SR 2013, Wyoming, PA

Built 1990 Load: 43.5 t ADT: 2,862

PA 921; SR 0921

Good

Over: OAK RUN

1.0 MI.S.W. OF ZIONS VIEW, York, PA

Built 1983 Load: 43.5 t ADT: 7,478

T370; PENTLAND RD.

Good

Over: EAST BR CODORUS CREEK

2E CODORUS S P/CODORUSCR, York, PA

Built 1998 Load: 43.5 t ADT: 323

Diamond Street

Good

Over: AMTRAK(NE CORRI);CONRAIL

E. of 22nd Street 28D06, Philadelphia, PA

Built 1918 Load: 43.5 t ADT: 9,200

T-620 (CO. BR #28)

Good

Over: MILL CREEK

0.8 MI. SE OF WETONA, Bradford, PA

Built 1997 Load: 43.5 t ADT: 50

ON TSR 400

Good

Over: ALLEGHENY RIVER

ROULETTE, Potter, PA

Built 1997 Load: 43.5 t ADT: 791

NELSON-MUSGRAVE BR

Good

Over: TEVEBAUGH RUN

004022 1.5 MI N OF BADEN, Beaver, PA

Built 1997 Load: 43.5 t ADT: 85

SR 4025

Good

Over: SR 4027 REED ST COAL RUN

NORTH HUNTINGDON TOWNSHIP, Westmoreland, PA

Built 1997 Load: 43.5 t ADT: 3,583

N. WYOMISSING BLVD

Good

Over: US 422

N.WYOMISSING BLVD.OVER422, Berks, PA

Built 1998 Load: 43.5 t ADT: 11,729

SR 80 EB

Good

Over: OVER ABNDN.RR/NESHNK.CK

FINDLEY TOWNSHIP, Mercer, PA

Built 1998 Load: 43.5 t ADT: 12,524

SR 89 CHURCH RUN

Good

Over: OVER DOLLY RUN

ROME TOWNSHIP, Crawford, PA

Built 1999 Load: 43.5 t ADT: 827

T-304

Good

Over: PENNS CREEK

2.5 MI. EAST OF WEIKERT, Union, PA

Built 1998 Load: 43.5 t ADT: 100

SR 2030 Deer Rd.

Good

Over: BALD EAGLE CREEK

BALD EAGLE, York, PA

Built 1999 Load: 43.5 t ADT: 192

SR 322-US 322 W.B.

Good

Over: SR 4006

NORTH MILROY, Mifflin, PA

Built 1999 Load: 43.5 t ADT: 8,585

SR 14

Good

Over: TRIB TO TOWANDA CREEK

1 MI.NORTH OF GROVER, Bradford, PA

Built 2000 Load: 43.5 t ADT: 2,789

SR 80 EB

Good

Over: OVER T998 CENTERTOWN RD.

WOLF CREEK TOWNSHIP, Mercer, PA

Built 1965 Load: 43.5 t ADT: 10,833

SR 15 NORTHBOUND

Good

Over: SR 2026

TOWN OF BLOSSBURG, Tioga, PA

Built 2000 Load: 43.5 t ADT: 6,178

SR 22-US 22

Good

Over: STRODES RUN

STRODES MILLS, Mifflin, PA

Built 2000 Load: 43.5 t ADT: 7,567

Showing 17,451-17,500 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.