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

Mounts Road

Fair

Over: Chartiers Creek

South Franklin Township, Washington, PA

Built 2000 Load: 32.7 t ADT: 150

Wilkes Lane

Fair

Over: Trib 28250 to Bow Creek

1/4 MI FROM RT 309, Luzerne, PA

Built 1983 Load: 32.7 t ADT: 50

Wiest School Road

Fair

Over: Monocacy Creek

BTW Bieber Mill & Cassel, Berks, PA

Built 1990 Load: 32.7 t ADT: 200

Wilson Avenue

Fair

Over: Trib. S Br. Conewago CK

200 yd N Eisenhower Dr, York, PA

Built 2019 Load: 32.7 t ADT: 5,219

BURNT MILL ROAD

Fair

Over: PAXTON RUN

1 MI SOUTH OF 641, Franklin, PA

Built 1987 Load: 32.7 t ADT: 200

MID VALLEY DRIVE

Fair

Over: STERRY CREEK

1/4 MI FROM LACKAWANNA AV, Lackawanna, PA

Built 1972 Load: 32.7 t ADT: 500

PAGE VALLEY RD

Fair

Over: STONY RUN

100 FT W OF SR 2017, Juniata, PA

Built 2020 Load: 32.7 t ADT: 100

HAMBILTONIAN WAY

Fair

Over: TRIB TO LITTLE CONEWAGO

250 N OF MARTINGALE DR, York, PA

Built 1993 Load: 32.7 t ADT: 100

NO DATA ENTERED

Fair

Over: TIONESTA CREEK

NO DATA ENTERED, Forest, PA

Built 2019 Load: 32.7 t ADT: 50

FR 215

Fair

Over: TIONESTA CREEK

VILLAGE OF MAYBURG, Forest, PA

Built 2019 Load: 32.7 t ADT: 50

NATIONAL PARK DRIV

Fair

Over: SLATEFORD CREEK

7 MILES EAST OF US. ROUTE, Northampton, PA

Built 1972 Load: 32.7 t ADT: 155

U.S. ROUTE 209

Fair

Over: HORNBECKS CREEK

10.9 MILES NORTH OF SOUTH, Pike, PA

Built 1999 Load: 32.7 t ADT: 4,521

FLORIDA AVE & RR

Fair

Over: MUDDY RUN

BTWN C-1 & PENN AVE, Franklin, PA

Built 1942 Load: 32.7 t ADT: 30

ASHBURN DRIVE

Fair

Over: LETORT SPRING RUN

MAIN ENTRANCE, Cumberland, PA

Built 1957 Load: 32.7 t ADT: 4,000

ASHBURN DRIVE

Fair

Over: LETORT SPR LET LN

BUILDING 315, Cumberland, PA

Built 1957 Load: 32.7 t ADT: 4,000

BARRY DRIVE

Fair

Over: LETORT SPRING RUN

535 SW OF STRUCTURE 238, Cumberland, PA

Built 1957 Load: 32.7 t ADT: 500

GEORGIA AVE

Fair

Over: SMALL STREAM

BTWN LA AVE & E-4 RD, Franklin, PA

Built 1943 Load: 32.8 t ADT: 35

BALTIMORE PIKE

Fair

Over: WEST BR CHESTER CREEK

MARKHAM 32E10, Delaware, PA

Built 1937 Load: 33.0 t ADT: 18,856

SR 22-US 22

Fair

Over: VALLEY ROAD

LEWISTOWN, Mifflin, PA

Built 1958 Load: 33.0 t ADT: 14,029

MID-COUNTY EXWY.NB

Fair

Over: SCHUYLKILL R RDS NSRC

W. CONSHOHOCKEN 3367J08, Montgomery, PA

Built 1974 Load: 33.0 t ADT: 53,181

MID-COUNTY EXWY.SB

Fair

Over: SCHUYLKILL R RD NSRC

W. CONSHOHOCKEN 3367J08, Montgomery, PA

Built 1974 Load: 33.0 t ADT: 54,564

HENDRICKS STATION

Fair

Over: PERKIOMEN CREEK

PERKIOMENVILLE 3029-F2, Montgomery, PA

Built 1962 Load: 33.0 t ADT: 420

SR 2004

Fair

Over: OVER TARKILN RUN

CRANBERRY TOWNSHIP, Venango, PA

Built 1981 Load: 33.0 t ADT: 455

T-601 Jones Town R

Fair

Over: Manada Creek

INE SKYLN VW/Manada Creek, Dauphin, PA

Built 2011 Load: 33.0 t ADT: 2,000

US 202

Fair

Over: VALLEY CREEK

1.5 MI. W. PA29 3474B02, Chester, PA

Built 2014 Load: 33.0 t ADT: 85,474

KELLYS SWAMP LANE

Fair

Over: HILLS CREEK

HILLS CREEK SP, Tioga, PA

Built 2017 Load: 33.0 t ADT: 300

FR 148

Fair

Over: S. BRANCH TIONESTA CRK.

0.2 MILES FROM SR 948, Warren, PA

Built 1934 Load: 33.0 t ADT: 25

THOMPSON RD

Fair

Over: BULL CREEK

BF06 BULL CREEK #6, Allegheny, PA

Built 1900 Load: 33.4 t ADT: 602

DAWSON RD

Fair

Over: BULL CREEK

BF09 BULL CREEK NO. 9, Allegheny, PA

Built 1894 Load: 33.4 t ADT: 261

SR 4028(LR06046SP)

Fair

Over: SCHUYLKILL RIVER

WEST STATE STREET, Berks, PA

Built 1927 Load: 33.4 t ADT: 8,967

SR 729-PA 729

Fair

Over: MUDDY RUN

BECCARIA, Clearfield, PA

Built 1934 Load: 33.4 t ADT: 377

SR 2501; S.Carp.st

Fair

Over: E BR OF HAMMER CREEK

SCHAEFFERSTOWN, Lebanon, PA

Built 1930 Load: 33.4 t ADT: 807

HARRIS STREET

Fair

Over: SILVER CREEK

SOUTH OF WATER STREET, Northampton, PA

Built 1954 Load: 33.4 t ADT: 200

POTTER BRIDGE T360

Fair

Over: WHEELING CREEK TRIB

300 NORTH OF TR 341, Washington, PA

Built 1882 Load: 33.4 t ADT: 30

BEAVER DAM ROAD

Fair

Over: RT FORK BEAVER DAM RUN

3.8 MI NW OF SR 4001, Clinton, PA

Built 2010 Load: 33.4 t ADT: 15

T-469 CROOKED HILL

Fair

Over: MANADA CREEK

CROOKED HILL RD, Dauphin, PA

Built 2011 Load: 33.4 t ADT: 200

FR 215

Fair

Over: TIONESTA CREEK

VILLAGE OF MAYBURG, Forest, PA

Built 2019 Load: 33.4 t ADT: 50

FR 321

Fair

Over: MEADE RUN

0.2 MILES FROM FR 150, Warren, PA

Built 1976 Load: 33.4 t ADT: 50

US 15 NB; SR 0015

Fair

Over: PA 116; SR 0116

US15 & PA 116 INTERCHANGE, Adams, PA

Built 1990 Load: 33.6 t ADT: 11,494

SR 2005

Fair

Over: WHITE RUN

3 MI. N. OF BONNEAUVILLE, Adams, PA

Built 1938 Load: 33.6 t ADT: 1,406

RAYMOND SHAFER HW

Fair

Over: SR 8009 RAMP B

I-79 SB OVER RAMP B, Allegheny, PA

Built 1973 Load: 33.6 t ADT: 24,277

SR 0079 NB

Fair

Over: SR 4052 W. BAYNE ROAD

SR 0079 NB OVER SR 4052, Allegheny, PA

Built 1974 Load: 33.6 t ADT: 33,038

GOLDEN MILE HY

Fair

Over: HUMMS RUN

1/2 MILE FROM COUNTY LINE, Allegheny, PA

Built 1950 Load: 33.6 t ADT: 16,638

PARKWAY EAST

Fair

Over: SR 2110 SH

CHURCH HILL INTERCHANGE, Allegheny, PA

Built 1950 Load: 33.6 t ADT: 33,644

SR 885

Fair

Over: CLIFF

Blvd of The Allies Bluffs, Allegheny, PA

Built 1950 Load: 33.6 t ADT: 28,222

SNOWDEN RD.

Fair

Over: PETERS CREEK

@ INTER. WITH SR 3014, Allegheny, PA

Built 1920 Load: 33.6 t ADT: 16

BABCOCK BL

Fair

Over: GIRTYS RUN

520 N.E. OF SR 4009, Allegheny, PA

Built 1926 Load: 33.6 t ADT: 14,237

TENTH STREET BR

Fair

Over: I-376 AND CSX RR

MA11 SOUTH 10TH ST BRDG, Allegheny, PA

Built 1933 Load: 33.6 t ADT: 18,372

MURRAY AV

Fair

Over: BEECHWOOD BLVD PKWY RAMP

066 Murray Ave BrIdge, Allegheny, PA

Built 1978 Load: 33.6 t ADT: 11,500

CHESTNUT ST

Fair

Over: CHARTIERS CREEK

CC04 CHARTIERS CRK # 4, Allegheny, PA

Built 1983 Load: 33.6 t ADT: 5,924

Showing 5,201-5,250 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.