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

SUTTER RD

Fair

Over: LITTLE PINE CREEK

250E.OF THOMPSON RUN RD., Allegheny, PA

Built 1941 Load: 32.7 t ADT: 2,900

MOUNT ROYAL BLVD

Fair

Over: BRANCH OF PINE CREEK

100 N OF ELFINWILD RD, Allegheny, PA

Built 1920 Load: 32.7 t ADT: 11,459

LOWRIES RUN RD.

Fair

Over: LOWRIES RUN

200W.OF INTER.W/SR 4011, Allegheny, PA

Built 1914 Load: 32.7 t ADT: 12,322

BABCOCK BL

Fair

Over: SMALL CREEK DRAIN PIPE

300 SOUTH OF SR 4070, Allegheny, PA

Built 1936 Load: 32.7 t ADT: 5,428

BABCOCK BL

Fair

Over: NORTH PARK LAKE SPILLWAY

@ N.PARK LAKE SPILLWAY, Allegheny, PA

Built 1936 Load: 32.7 t ADT: 2,562

GLENFIELD RD

Fair

Over: KILBUCK RUN

1055N.OFINTER.W/SR65, Allegheny, PA

Built 1976 Load: 32.7 t ADT: 4,551

MARKMAN PARK ROAD

Fair

Over: BIG SEWICKLEY CREEK

200E.WARRENDALE-BAYNE RD, Allegheny, PA

Built 1919 Load: 32.7 t ADT: 117

BERDAR DRIVE

Fair

Over: GILLESPIE RUN

AT SR 2017 INTERSECTION, Allegheny, PA

Built 1985 Load: 32.7 t ADT: 100

SCOTT HILL ROAD

Fair

Over: GILLESPIE RUN

AT SR 2017 INTERSECTION, Allegheny, PA

Built 1985 Load: 32.7 t ADT: 100

BLAZIER DR

Fair

Over: PINE CREEK

108001 OVER PINE CREEK, Allegheny, PA

Built 1975 Load: 32.7 t ADT: 2,000

OAKRIDGE DR

Fair

Over: PINE CREEK

108004 TOWN OF MCCANDLESS, Allegheny, PA

Built 1975 Load: 32.7 t ADT: 200

BOWER HILL RD

Fair

Over: PAINTERS RUN

PA08 PAINTERS RUN NO. 8, Allegheny, PA

Built 1927 Load: 32.7 t ADT: 15,909

TRIPHAMMER RD T315

Fair

Over: PINEY FORK

PF01 PINEY FORK # 1, Allegheny, PA

Built 1902 Load: 32.7 t ADT: 803

HILL RD

Fair

Over: ZOO WALKWAY

043 Hill Rd (One Wild Pla, Allegheny, PA

Built 1940 Load: 32.7 t ADT: 11,200

BEAVER RD

Fair

Over: LITTLE SEWICKLEY CREEK

427001BEAV&L SEWICK RD, Allegheny, PA

Built 1841 Load: 32.7 t ADT: 3,571

WOODLAND ROAD EXT.

Fair

Over: LITTLE SEWICKLEY CREEK

SL04 LITTLE SEW CRK # 4, Allegheny, PA

Built 1889 Load: 32.7 t ADT: 266

BROWN RD

Fair

Over: BIG SEWICKLEY CREEK EB

SE01 S/BIG SEW CRK RD, Allegheny, PA

Built 1891 Load: 32.7 t ADT: 118

RAMP K

Fair

Over: CROSSTOWN BLVD

RP. FROM BLVD.TO SR579 NB, Allegheny, PA

Built 1962 Load: 32.7 t ADT: 13,990

RAMP E 8010 EB

Fair

Over: BRADDOCK AVENUE

RAMP E OVER BRADDOCK AVE, Allegheny, PA

Built 1952 Load: 32.7 t ADT: 5,366

RAMP D

Fair

Over: RODI RD NB

RAMP D OVER RODI RD.N.B., Allegheny, PA

Built 1962 Load: 32.7 t ADT: 2,028

RAMP A

Fair

Over: RAMP C SB

28 N.B. RP. TO HIGH.PK.BR, Allegheny, PA

Built 1960 Load: 32.7 t ADT: 5,936

RAMP A

Fair

Over: SR 0837 SB

McKeesport-Duquesne Br, Allegheny, PA

Built 1970 Load: 32.7 t ADT: 3,794

RAMP C

Fair

Over: RAMP D UNDERPASS EB.

AT INT W/ GRANT STREET, Allegheny, PA

Built 1958 Load: 32.7 t ADT: 4,220

RAMP A

Fair

Over: I-376 WB UNDERPASS

AT INT W/ GRANT STREET, Allegheny, PA

Built 1958 Load: 32.7 t ADT: 17,478

SR0066

Fair

Over: BRADY RUN

BRADY RUN NO.1, Armstrong, PA

Built 1951 Load: 32.7 t ADT: 5,203

SR0066

Fair

Over: ELDER RUN

LOOKABOUGH NO.1, Armstrong, PA

Built 1951 Load: 32.7 t ADT: 3,696

SR0066

Fair

Over: ELDER RUN

LOOKABOUGH NO.2, Armstrong, PA

Built 1951 Load: 32.7 t ADT: 3,696

SR0085

Fair

Over: TRIB TO COWANSHANNOCK CR

HOOSICKS MILL NO.2, Armstrong, PA

Built 1978 Load: 32.7 t ADT: 2,353

SR3128

Fair

Over: NICHOLSON RUN

MCVILLE NO.2, Armstrong, PA

Built 1958 Load: 32.7 t ADT: 621

SR0210

Fair

Over: BR OF PLUM CREEK

SOUTH OF ELDERTON, Armstrong, PA

Built 1966 Load: 32.7 t ADT: 2,467

SR0210

Fair

Over: CESSNA RUN

NORTH OF ELDERTON, Armstrong, PA

Built 1970 Load: 32.7 t ADT: 3,100

SR0422 EB&WB

Fair

Over: GLADE RUN

RTE 422 GLADE, Armstrong, PA

Built 1961 Load: 32.7 t ADT: 11,405

SR1017

Fair

Over: TRIB TO REDBANK CR

RED BANK T-S OF MAYPORT, Armstrong, PA

Built 1949 Load: 32.7 t ADT: 245

SR1031

Fair

Over: BR OF PINE CREEK

MOSGROVE, Armstrong, PA

Built 1941 Load: 32.7 t ADT: 892

SR2005

Fair

Over: HUSKINS RUN

WEST OF RURAL VALLEY, Armstrong, PA

Built 1963 Load: 32.7 t ADT: 640

SR3004

Fair

Over: CORNPLANTER RUN

BOGGSVILLE NO.1, Armstrong, PA

Built 1932 Load: 32.7 t ADT: 795

SR3013

Fair

Over: TRIB TO BUFFALO CREEK

NICHOLA NO.3, Armstrong, PA

Built 1937 Load: 32.7 t ADT: 1,053

T-690 WHITE OAK RD

Fair

Over: COWANSHANNOCK CREEK

200 feet south of SR 0085, Armstrong, PA

Built 1988 Load: 32.7 t ADT: 300

T-689 PETERMAN HIL

Fair

Over: SOUTH BRANCH PLUM CREEK

440S of Copper Valley Rd, Armstrong, PA

Built 1930 Load: 32.7 t ADT: 400

FRANKFORT RD

Fair

Over: TRAVERSE CREEK

@ ENTR TO RACCOON CR PARK, Beaver, PA

Built 1932 Load: 32.7 t ADT: 1,211

PENNSYLVANIA AV

Fair

Over: MARKEYS RUN

NEAR RR OVERHEAD, Beaver, PA

Built 1965 Load: 32.7 t ADT: 17,976

SR 0376 EB WB

Fair

Over: TWO MILE RUN

200 FT N OF SR 0068, Beaver, PA

Built 1967 Load: 32.7 t ADT: 30,370

OHIO RIVER BL

Fair

Over: TEVEBAU RUN

@ E.CONWAY RR SWITCH TWR., Beaver, PA

Built 1914 Load: 32.7 t ADT: 30,175

OHIO RIVER BL

Fair

Over: CROWS RUN

250SOUTH CROWS RUN RD., Beaver, PA

Built 1900 Load: 32.7 t ADT: 24,154

MIDLAND ROAD

Fair

Over: UPPER DRY RUN CREEK

150 WEST OF SR 4047, Beaver, PA

Built 1925 Load: 32.7 t ADT: 7,633

MIDLAND BEAVER RD

Fair

Over: SIX MILE RUN

1/2 MI NE OF SR 4034, Beaver, PA

Built 1924 Load: 32.7 t ADT: 6,838

SHIPPINGPORT HI RD

Fair

Over: PEGGS RUN

SHIPPINGPORT NUC PLANT, Beaver, PA

Built 1938 Load: 32.7 t ADT: 3,961

FAIRLANE BL

Fair

Over: JORDAN RUN

300 S.W. OF PA TURNPIKE, Beaver, PA

Built 1951 Load: 32.7 t ADT: 1,501

SHEFFIELD AVE

Fair

Over: LOGTOWN RUN

@ INTER W/ SR 3016, Beaver, PA

Built 1930 Load: 32.7 t ADT: 3,620

PARISH RD

Fair

Over: SERVICE CREEK

004042 OVER SERVICE CREEK, Beaver, PA

Built 1982 Load: 32.7 t ADT: 70

Showing 4,001-4,050 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.