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

MOUNT ROYAL BL

Fair

Over: OVER PINE CREEK

HAMPTON TWP, Allegheny, PA

Built 1961 Load: 31.8 t ADT: 4,160

SAMPLE RD

Fair

Over: CROUSE RUN

531EAST OF SR 4067, Allegheny, PA

Built 1963 Load: 31.8 t ADT: 7,087

NICHOLSON RD

Fair

Over: SR 0079 NB SB

1/4 S.W.OF I279, Allegheny, PA

Built 1973 Load: 31.8 t ADT: 3,217

ROUND HILL RD

Fair

Over: DOUGLAS RUN BRANCH

DG08 DOUGLAS RUN # 8, Allegheny, PA

Built 1901 Load: 31.8 t ADT: 3,288

PEARCE MILL RD

Fair

Over: IRWIN RUN

IW01 IRWIN RUN NO. 1, Allegheny, PA

Built 1936 Load: 31.8 t ADT: 3,569

BOWER HILL RD

Fair

Over: PAINTERS RUN

PA06 PAINTERS RUN NO. 6, Allegheny, PA

Built 1934 Load: 31.8 t ADT: 15,049

BOWER HILL RD

Fair

Over: PAINTERS RUN

PA07 PAINTERS RUN NO. 7, Allegheny, PA

Built 1927 Load: 31.8 t ADT: 15,909

PAINTERS RUN RD

Fair

Over: PAINTERS RUN

PA09 PAINTERS RUN NO. 9, Allegheny, PA

Built 1930 Load: 31.8 t ADT: 15,409

RICH HILL RD

Fair

Over: DEER CREEK

DE04 DEER CREEK NO. 4, Allegheny, PA

Built 1978 Load: 31.8 t ADT: 398

MCCARTNEY LANE

Fair

Over: BIG SEWICKLEY CREEK

SB06 BIG SEWICKLEYCR# 6, Allegheny, PA

Built 1900 Load: 31.8 t ADT: 10

CORAOPOLIS IMP. RD

Fair

Over: McCLARENS RUN

MC06 MCCLARENS RUN # 6, Allegheny, PA

Built 1983 Load: 31.8 t ADT: 1,526

HERRS ISLAND RD

Fair

Over: ALLEGHENY RIVER

041 30th St Bridge (Herrs, Allegheny, PA

Built 1986 Load: 31.8 t ADT: 800

HAWKINS AV

Fair

Over: TASSEY HOLLOW & STREAM

P50007 TASSEY HOLLOW, Allegheny, PA

Built 1970 Load: 31.8 t ADT: 5,600

SR 8005 RAMP AB

Fair

Over: SR 0079 NB-SB

HEIDELBERG EXIT, Allegheny, PA

Built 1967 Load: 31.8 t ADT: 10,559

SR2059

Fair

Over: GUFFY RUN

HUNGRY HOLLOW NO.2, Armstrong, PA

Built 1937 Load: 31.8 t ADT: 93

T-347 BEAR CREEK

Fair

Over: BEAR CREEK

1 MILE SOUTH OF SR 0268, Armstrong, PA

Built 1913 Load: 31.8 t ADT: 75

CONSTITUTION BL

Fair

Over: Trib N Fork Little Bvr C

150S.E.Y&S R.R.AT CRSIG., Beaver, PA

Built 1952 Load: 31.8 t ADT: 10,890

MAIN STREET

Fair

Over: BEAVER VALLEY EX.

TWP.RD.625 OVER TR 60, Beaver, PA

Built 1969 Load: 31.8 t ADT: 705

LR 04081 SR 1016

Fair

Over: PA TPK (I-76)

WEST OF UNIONVILLE, Beaver, PA

Built 1952 Load: 31.8 t ADT: 405

PA 31

Fair

Over: T.RAYTWN.BR.JUNIATA RIV.

1 MI.N.OF NEW BUENA VISTA, Bedford, PA

Built 1931 Load: 31.8 t ADT: 1,206

US 220

Fair

Over: SAND SPRING RUN

1.5 MILE NORTH OF SR 3011, Bedford, PA

Built 1965 Load: 31.8 t ADT: 3,838

SR 2025

Fair

Over: CLEAR CREEK

3.5 MI.S.OF EVERETT, Bedford, PA

Built 1965 Load: 31.8 t ADT: 112

SR 4017

Fair

Over: DUNNING CREEK

2 MI.S.OF REYNOLDSDALE, Bedford, PA

Built 1965 Load: 31.8 t ADT: 294

PA TPK (I-76)

Fair

Over: T-477 DUNNINGS CR.

EAST OF BEDFORD, Bedford, PA

Built 1939 Load: 31.8 t ADT: 36,252

T307 Street Road

Fair

Over: FLINTSTONE CREEK

4.5 MI.S.OF BEANS COVE, Bedford, PA

Built 1987 Load: 31.8 t ADT: 154

SR 78 (LR 141)

Fair

Over: T-566(SCHOOL HOUSE ROAD)

I-78 OVER SCHOOL HOUSE RD, Berks, PA

Built 1955 Load: 31.8 t ADT: 32,446

SR 422(LR 146)

Fair

Over: MONOCACY CREEK

1 MI.EAST OF PA 82 INTER., Berks, PA

Built 1941 Load: 31.8 t ADT: 40,912

SR 1025(LR 06120)

Fair

Over: LITTLE LEHIGH CREEK

CENTENNIAL ROAD, Berks, PA

Built 1934 Load: 31.8 t ADT: 277

SR 2016(LR 06114)

Fair

Over: NORFOLK SOUTHERN RR

BELLEVUE AVE, Berks, PA

Built 1955 Load: 31.8 t ADT: 9,013

SR 3033(LR 06047)

Fair

Over: TRIB.TULPEHOCKEN CREEK

2 MI.S.OF BERNVILLE, Berks, PA

Built 1928 Load: 31.8 t ADT: 3,711

SR 222NB(LR1035)

Fair

Over: SCHUYLKILL RIVER

2 MI SW OF PA61, Berks, PA

Built 1966 Load: 31.8 t ADT: 27,862

SR0222-SB(LR 1035)

Fair

Over: SCHUYLKILL RIVER

2 MI.SW OF PA61, Berks, PA

Built 1966 Load: 31.8 t ADT: 26,305

DAVIS BR RD

Fair

Over: PLUM CREEK

DAVIS BRIDGE, Berks, PA

Built 1962 Load: 31.8 t ADT: 133

CARL ROAD

Fair

Over: OYSTERVILLE CREEK

SOUTH OF LOBACHSVILLE, Berks, PA

Built 1969 Load: 31.8 t ADT: 175

WEST POPLAR STREET

Fair

Over: WILLOW CREEK

WEST POPLAR STREET, Berks, PA

Built 1983 Load: 31.8 t ADT: 250

US 22 EBL

Fair

Over: T-406 MILL ROAD

2 MI.W.OF ALTOONA, Blair, PA

Built 1982 Load: 31.8 t ADT: 9,228

US 22 WBL

Fair

Over: T-406 MILL ROAD

2 MI.W.OF ALTOONA, Blair, PA

Built 1982 Load: 31.8 t ADT: 9,098

I-99 / US 220 SBL

Fair

Over: 8TH AVE EXT BLAIR GAP RN

DUNCANSVILLE, Blair, PA

Built 1983 Load: 31.8 t ADT: 7,809

PA 350

Fair

Over: N&BE RR & BALD EAGLE CR

1.5 MI.S.OF BALD EAGLE, Blair, PA

Built 1974 Load: 31.8 t ADT: 909

WALNUT AVENUE

Fair

Over: MILL RUN

WALNUT AVE.@ 31ST.STREET, Blair, PA

Built 1993 Load: 31.8 t ADT: 1,280

PA 414

Fair

Over: MILL CREEK

1 MILE EAST OF CANTON, Bradford, PA

Built 1963 Load: 31.8 t ADT: 2,360

SR 1056

Fair

Over: OVER SATTERLEE CREEK

2 MI. EAST OF ATHENS BORO, Bradford, PA

Built 1957 Load: 31.8 t ADT: 2,266

SR 4016

Fair

Over: TRIB TO SUGAR CREEK

1MI.EAST OF AUSTINVILLE, Bradford, PA

Built 1974 Load: 31.8 t ADT: 403

SULLIVAN ST(BR#10)

Fair

Over: TOWANDA CREEK

SULLIVAN ST. CANTON BORO., Bradford, PA

Built 1962 Load: 31.8 t ADT: 150

NEW US-1 BY-PASS

Fair

Over: WOOLSTON DRIVE

INTERC.WOOLSTON DR.38F07, Bucks, PA

Built 1985 Load: 31.8 t ADT: 56,629

BRISTOL PIKE

Fair

Over: NESHAMINY CREEK

BENSALEM TWP. 42C12, Bucks, PA

Built 1977 Load: 31.8 t ADT: 15,008

RIVER ROAD

Fair

Over: TRIB.OF DELAWARE RIVER

.5MILES LR-09098 11K05, Bucks, PA

Built 1923 Load: 31.8 t ADT: 2,608

WOODHAVEN ROAD

Fair

Over: INTERSTATE 95;RAMP(NB)ON

1MI.N.PHILA LINE 45F04, Bucks, PA

Built 1964 Load: 31.8 t ADT: 54,712

INTERSTATE 95 (NB)

Fair

Over: KLECKNER ROAD

1MI.S.CROYDON 42D11, Bucks, PA

Built 1964 Load: 31.8 t ADT: 41,690

INTERSTATE 95 (SB)

Fair

Over: KLECKNER ROAD

1MI.S.CROYDON 42D11, Bucks, PA

Built 1964 Load: 31.8 t ADT: 41,939

Showing 3,551-3,600 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.