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

SR 3011

Fair

Over: LITTLE MARSH CREEK

1 MI. N. OF ORTANNA, Adams, PA

Built 1967 Load: 34.5 t ADT: 2,288

SR 3017

Fair

Over: WILLOUGHBY RUN

NW OF GETTYSBURG, Adams, PA

Built 1955 Load: 34.5 t ADT: 1,633

SR 4008

Fair

Over: CONEWAGO CREEK

1 MI N OF ARENDTSVILLE, Adams, PA

Built 1957 Load: 34.5 t ADT: 992

HILLTOWN ROAD

Fair

Over: MARSH CREEK

1.5 E.CSHTWN/MARSH CREEK, Adams, PA

Built 1978 Load: 34.5 t ADT: 100

SR 19

Fair

Over: 65 NB&SB RAMP H & RAMP C

West End Bridge, Allegheny, PA

Built 1991 Load: 34.5 t ADT: 46,023

RT 0022 EB WB

Fair

Over: SR 3103- Mckee Road

OVER SR 3103 (McKee Road), Allegheny, PA

Built 1964 Load: 34.5 t ADT: 22,115

PENN LINCOLN PKWY

Fair

Over: BATES STREET

BATES ST. INTERCHANGE, Allegheny, PA

Built 1952 Load: 34.5 t ADT: 67,835

PARKWAY EAST

Fair

Over: SR 8010 RAMP B

@ INT W/ S BRADDOCK AVE, Allegheny, PA

Built 1951 Load: 34.5 t ADT: 76,631

I376

Fair

Over: ARDMORE BLVD.

I376 OVER ARDMORE BLVD, Allegheny, PA

Built 1951 Load: 34.5 t ADT: 54,792

BOWMAN AV

Fair

Over: 1066 RAMP G-E CLIFF ST

@ S.END OF MCKSPRT-DUQ BR, Allegheny, PA

Built 1973 Load: 34.5 t ADT: 2,296

LAUREL HILL ROAD

Fair

Over: ROBINSON RUN

80 SE OF SR 2246, Allegheny, PA

Built 1956 Load: 34.5 t ADT: 1,628

PA TPK RAMPS B&C

Fair

Over: PA TPK (I-76)

PITTSBURGH INTERCHANGE, Allegheny, PA

Built 1952 Load: 34.5 t ADT: 34,209

UNIVERSAL RD

Fair

Over: UNION RAILROAD

BI01 B & LE RR NO. 1, Allegheny, PA

Built 1923 Load: 34.5 t ADT: 9,286

RAMP F RD

Fair

Over: BALDWIN RD {6014-02}

PARKWAY RAMP TO I79 N.B., Allegheny, PA

Built 1971 Load: 34.5 t ADT: 4,990

RAMP A

Fair

Over: ARDMORE BLVD SR 0008

RP.A O/ARDMORE @ CHANNEL4, Allegheny, PA

Built 1952 Load: 34.5 t ADT: 8,923

NB BYPASS

Fair

Over: RAILROAD PROPERTY

AT MCKEESPORT-DUQESNE, Allegheny, PA

Built 1970 Load: 34.5 t ADT: 1,491

RAMP G

Fair

Over: RAMP E

RAMP G OVER 1066 RAMP E, Allegheny, PA

Built 1973 Load: 34.5 t ADT: 1,629

RAMP F

Fair

Over: RAMP C&D FT.PITT BLVD.

RAMP F TO PARKWAY EAST, Allegheny, PA

Built 1956 Load: 34.5 t ADT: 1,280

RAMP B from 279 SB

Fair

Over: PARKING AREA

NEAR CLARK BUILDING, Allegheny, PA

Built 1986 Load: 34.5 t ADT: 2,479

RAMP V

Fair

Over: 1021 RP.B & CITY STREETS

HEINZ FIELD/SR 65 NB, Allegheny, PA

Built 1986 Load: 34.5 t ADT: 10,950

SR0210

Fair

Over: CROOKED CREEK

NORTH OF SOUTH BEND, Armstrong, PA

Built 1967 Load: 34.5 t ADT: 2,467

SR3001

Fair

Over: TRIB TO ALLEGHENY RIVER

BUNKER HILL ROAD, Armstrong, PA

Built 1916 Load: 34.5 t ADT: 148

Constitution Blvd.

Fair

Over: SR 4042 (MARKET ST)

BRIDGEWATER O/SR 4042, Beaver, PA

Built 1958 Load: 34.5 t ADT: 25,773

PINE GROVE RD

Fair

Over: SIX MILE RUN

004007 PINE GROVE RD, Beaver, PA

Built 1982 Load: 34.5 t ADT: 125

LIBERTY AVENUE

Fair

Over: DRY RUN

004049 SMITHS FERRY BRDG, Beaver, PA

Built 1899 Load: 34.5 t ADT: 150

US 30

Fair

Over: T466 STEIN ROAD

0.5 MILE EAST OF SR 1007, Bedford, PA

Built 1979 Load: 34.5 t ADT: 8,485

I-99 / US 220 SBL

Fair

Over: SR4019 ABN.RR DUNNING CR

OVER SR 4019 (CESSNA), Bedford, PA

Built 1971 Load: 34.5 t ADT: 5,530

SR 1005

Fair

Over: SNAKESPRING VALLEY RUN

VALLEYMILL, Bedford, PA

Built 1951 Load: 34.5 t ADT: 331

SR 1020

Fair

Over: SHERMAN VALLEY RUN

2.8 MILE EAST OF SR 1009, Bedford, PA

Built 1950 Load: 34.5 t ADT: 82

SR 3021

Fair

Over: US 220

1.5 MI.S.OF BEDFORD, Bedford, PA

Built 1969 Load: 34.5 t ADT: 442

PA TPK (I-76)

Fair

Over: SR 1001 LR 05042

E OF BEDFORD @ CHALYBEATE, Bedford, PA

Built 1939 Load: 34.5 t ADT: 36,252

SR 1006 (LR 05113)

Fair

Over: PA TPK (I-76)

0.25 M.N.SR2020, Bedford, PA

Built 1939 Load: 34.5 t ADT: 90

T545 OPNHMR HLW RD

Fair

Over: OPPENHEIMER RUN

1.0 MI NE OF CESSNA, Bedford, PA

Built 1956 Load: 34.5 t ADT: 41

I-78(LR 141)

Fair

Over: TRIB. LITTLE SWATARA CRK

.1MI.E.OF EXIT 16(5), Berks, PA

Built 1950 Load: 34.5 t ADT: 36,395

SR 724 LR148

Fair

Over: WYOMISSING CREEK

LANCASTER PIKE, Berks, PA

Built 1973 Load: 34.5 t ADT: 12,242

SR 422(LR 149)

Fair

Over: TRIB.TO TULPEHOCKEN CK.

WOMELSDORF BOROUGH, Berks, PA

Built 1951 Load: 34.5 t ADT: 12,262

US 422(LR 793)

Fair

Over: BRENTWOOD DRIVE

READING BYPASS, Berks, PA

Built 1963 Load: 34.5 t ADT: 54,692

SR 2026 (LR 06113)

Fair

Over: BIEBER CREEK

3 MI.N.OF PRICETOWN, Berks, PA

Built 1927 Load: 34.5 t ADT: 969

SR 3006(LR 06048)

Fair

Over: TULPEHOCKEN CREEK

.3 MI.W.OF OBOLD, Berks, PA

Built 1978 Load: 34.5 t ADT: 2,193

SR 3033(LR 06047)

Fair

Over: TULPEHOCKEN CREEK

1 MI.SW OF BERNVILLE BORO, Berks, PA

Built 1976 Load: 34.5 t ADT: 3,711

SR 222 (LR 1035)

Fair

Over: T-707(WILLOW CK.RD.)

0.5 MI.S.OF PA 12, Berks, PA

Built 1974 Load: 34.5 t ADT: 16,005

SR 0222(LR 1035)

Fair

Over: T-707(WILLOW CK.RD.)

0.5 MI.S.OF PA 12, Berks, PA

Built 1974 Load: 34.5 t ADT: 15,843

SR 3059(LR 06039)

Fair

Over: LAUREL CREEK

LEISZS BRIDGE RD., Berks, PA

Built 1934 Load: 34.5 t ADT: 2,821

SR 4015 (LR 06046)

Fair

Over: MILL CREEK

VILLAGE OF BERNE;BERNE RD, Berks, PA

Built 1960 Load: 34.5 t ADT: 719

HORNING ROAD

Fair

Over: ALLEGHENY CREEK

NORTH OF KRAMER ROAD, Berks, PA

Built 1975 Load: 34.5 t ADT: 100

LESHER MILL RD

Fair

Over: LESHER RUN

SE OF SHARTLESVILLE, Berks, PA

Built 1963 Load: 34.5 t ADT: 99

I-99 AND SR 8005

Fair

Over: SR453 & 1012 RR J. RIV

TYRONE VIADUCT, Blair, PA

Built 1975 Load: 34.5 t ADT: 19,387

SR 2017

Fair

Over: ROARING RUN

.75 MI.N.OF MT.ETNA, Blair, PA

Built 1963 Load: 34.5 t ADT: 137

T580 Rider Farm Ln

Fair

Over: SPRING RUN

1 MI.NW.OF ALTOONA CAMPUS, Blair, PA

Built 1969 Load: 34.5 t ADT: 578

T-431 Wertz Road

Fair

Over: PINEY CREEK

2 MI.W OF WILLIAMSBURG, Blair, PA

Built 1971 Load: 34.5 t ADT: 81

Showing 5,651-5,700 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.