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

PA 625; SR 0625

Fair

Over: BLACK CREEK

0.25 MI.N. OF SENSENIG, Lancaster, PA

Built 1979 Load: 37.2 t ADT: 5,553

CHERRY HILL RD

Fair

Over: PETERS CREEK

200 FT NW OF T-325, Lancaster, PA

Built 1991 Load: 37.2 t ADT: 500

PA TPK (I-76)

Fair

Over: LNRR L.COCALICO CR

EAST COCALICO TWP, Lancaster, PA

Built 1949 Load: 37.2 t ADT: 24,971

T-380 POWER ROAD

Fair

Over: CHIQUES CREEK

1000 FT N OF T-886, Lancaster, PA

Built 1940 Load: 37.2 t ADT: 600

T-435 SAWMILL ROAD

Fair

Over: ENOLA LOW GRADE TRAIL

700 FT SOUTH OF T-413, Lancaster, PA

Built 1992 Load: 37.2 t ADT: 750

STATE STREET

Fair

Over: SR 0376 RAMP K

SR 0224 STATE ST, Lawrence, PA

Built 1973 Load: 37.2 t ADT: 10,894

DOUGHERTY ROAD

Fair

Over: BIG RUN

N OF OLD BUTLER ROAD, Lawrence, PA

Built 1985 Load: 37.2 t ADT: 200

PA 72; Ebenezer

Fair

Over: SWATARA CREEK

1 MI.S. JONESTOWN, Lebanon, PA

Built 1930 Load: 37.2 t ADT: 9,685

KILLINGER RD.

Fair

Over: KILLINGER CREEK

1E PALMYRA/KILLINGER CR, Lebanon, PA

Built 1973 Load: 37.2 t ADT: 400

10TH & OAK ST

Fair

Over: HAZEL DYKE

OAK ST FROM 10TH TO 7TH, Lebanon, PA

Built 1981 Load: 37.2 t ADT: 800

SR 22(LR 443)

Fair

Over: SR 1002 (LR 443 PAR.EB)

CETRONIA EXIT, Lehigh, PA

Built 1958 Load: 37.2 t ADT: 57,913

I- 78(LR 1045)

Fair

Over: SR 2005 (LR 158)LEHIGH

LEHIGH ST.EXIT 57(18A), Lehigh, PA

Built 1989 Load: 37.2 t ADT: 70,840

SR 2017 (LR 39025)

Fair

Over: SWABIA CREEK

BROOKSIDE ROAD, Lehigh, PA

Built 1957 Load: 37.2 t ADT: 8,650

SR 3005 (LR 39021)

Fair

Over: SCHAEFER RUN

BROOKDALE ROAD, Lehigh, PA

Built 1971 Load: 37.2 t ADT: 462

SR 4025 (LR 39059)

Fair

Over: LYON CREEK

KISTLER ROAD, Lehigh, PA

Built 1949 Load: 37.2 t ADT: 351

SR 0239 TR 239

Fair

Over: MILL RACE CREEK

HUNTINGTON 300 E SR 4006, Luzerne, PA

Built 1989 Load: 37.2 t ADT: 2,036

SR 0437 TR 437

Fair

Over: READING BLUMNT&NORTHERN

FAIRVIEW TWP .1M E TR 309, Luzerne, PA

Built 1927 Load: 37.2 t ADT: 3,274

SR 3004 KIRMAR PKW

Fair

Over: FORGE CREEK

NEWPORT TWP .5M E SR 3002, Luzerne, PA

Built 1954 Load: 37.2 t ADT: 3,357

T-332 HOLLOW RD

Fair

Over: NESCOPECK CREEK

NEAR T-431 INTERSECT, Luzerne, PA

Built 1933 Load: 37.2 t ADT: 50

BLYTHEBURN ROAD

Fair

Over: WAPWALLOPEN CREEK

1 MI WEST OF SR 2047, Luzerne, PA

Built 1993 Load: 37.2 t ADT: 700

SR 15 NB

Fair

Over: SEDACOG LYCO VALLEY RR

WMSPT(NEAR BOWMAN FIELD), Lycoming, PA

Built 1974 Load: 37.2 t ADT: 13,764

S.R. 0220

Fair

Over: OVER ARCH STREET

CITY OF WILLIAMSPORT, Lycoming, PA

Built 1972 Load: 37.2 t ADT: 9,239

SR 2018

Fair

Over: OVER MILLERS RUN

1.5 MI NE OF WILLIAMSPORT, Lycoming, PA

Built 1964 Load: 37.2 t ADT: 7,836

SR 2044

Fair

Over: OVER GLADE RUN

MUNCY BORO, Lycoming, PA

Built 1974 Load: 37.2 t ADT: 3,350

S.R.3003

Fair

Over: OVER PINE CREEK

2M S JERSEY SHORE T ELM, Lycoming, PA

Built 1889 Load: 37.2 t ADT: 728

SR 1002

Fair

Over: POTATO CREEK

CORYVILLE, McKean, PA

Built 1963 Load: 37.2 t ADT: 424

T-473 FULLER ROAD

Fair

Over: MINARD RUN

700 FT SOUTH OF SR 770, McKean, PA

Built 1960 Load: 37.2 t ADT: 80

SR 79 SB

Fair

Over: OVER SR 80 EB/WB

FINDLEY TOWNSHIP, Mercer, PA

Built 1965 Load: 37.2 t ADT: 7,014

SR 80 EB

Fair

Over: OVER SR 318 W MDDSX-MER

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 Load: 37.2 t ADT: 11,198

SR 80 WB

Fair

Over: OVER SR 318 W MDDSX-MER

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 Load: 37.2 t ADT: 11,377

SR 80 WB

Fair

Over: W BR LTL NESHANNOCK CRK.

SHENANGO TOWNSHIP, Mercer, PA

Built 1965 Load: 37.2 t ADT: 11,377

SR 3101 STONE PILE

Fair

Over: SR 80 EB & WB

EAST LACKAWANNOCK TWP., Mercer, PA

Built 1965 Load: 37.2 t ADT: 121

SR 3039 FLAT ROAD

Fair

Over: OVER LT NESHANNOCK CR TR

EAST LACKAWANNOCK TWP., Mercer, PA

Built 1892 Load: 37.2 t ADT: 462

DEKALB PIKE

Fair

Over: BRANCH STONY CREEK

N OF PA 73 22H12/3256D4, Montgomery, PA

Built 1922 Load: 37.2 t ADT: 25,351

P-TOWN X-WAY (WB)

Fair

Over: UPPER INDIAN HEAD ROAD

N. OF OAKS 27D3/3253H8, Montgomery, PA

Built 1984 Load: 37.2 t ADT: 30,988

MID-COUNTY EXWY.NB

Fair

Over: CHEMICAL ROAD / 3368-C5

PLYMOUTH TOWNSHIP 29G11, Montgomery, PA

Built 1974 Load: 37.2 t ADT: 45,623

ALLENTOWN ROAD

Fair

Over: NE.BR.PERKIOMEN CREEK

.5 MI.E. TPK 08E08/2918K8, Montgomery, PA

Built 1988 Load: 37.2 t ADT: 6,804

QUAKERTOWN ROAD

Fair

Over: BRANCH MACOBY CR/2805B5

UPPER HANOVER TWP. 02J07, Montgomery, PA

Built 1926 Load: 37.2 t ADT: 1,450

BYBERRY ROAD 25J13

Fair

Over: SOUTHAMPTON CREEK

BRYN ATHYN 3259H05, Montgomery, PA

Built 1828 Load: 37.2 t ADT: 13,179

PAPER MILL ROAD

Fair

Over: BRANCH WISSAHICKON CREEK

ERDENHEIM 3369G06, Montgomery, PA

Built 1957 Load: 37.2 t ADT: 17,661

FITZWATERTOWN ROAD

Fair

Over: SANDY RUN

FITZWATERTOWN 3258E10, Montgomery, PA

Built 1965 Load: 37.2 t ADT: 7,269

GREENWOOD AVENUE

Fair

Over: TOOKANY CREEK

CHELTENHAM 3370H06, Montgomery, PA

Built 1899 Load: 37.2 t ADT: 6,568

SWEDE ROAD

Fair

Over: BRANCH STONY CR/ 3255H08

NEAR NORRISTOWN 29B04, Montgomery, PA

Built 1949 Load: 37.2 t ADT: 21,583

GERLOFF ROAD

Fair

Over: SWAMP CREEK

1000 (S)OF SR0073 3029C7, Montgomery, PA

Built 1888 Load: 37.2 t ADT: 750

NEW HANOVER SQUARE

Fair

Over: BRANCH SWAMP CREEK

GILBERTSVILLE 3027J6, Montgomery, PA

Built 1950 Load: 37.2 t ADT: 487

FAUST ROAD

Fair

Over: SCIOTO CREEK

ADC 3028-K3, Montgomery, PA

Built 1909 Load: 37.2 t ADT: 784

11TH STREET

Fair

Over: MACOBY CREEK

0.2 M E RT-29 ADC 2805-C9, Montgomery, PA

Built 1906 Load: 37.2 t ADT: 1,209

CONSHOHOCKEN ST RD

Fair

Over: MILL CREEK

110 FT NW SR23 ADC3478-G5, Montgomery, PA

Built 1932 Load: 37.2 t ADT: 11,417

SR 3053 GERMANT.PK

Fair

Over: PA TPK (I-276)

SR 3053 GERMANTOWN PIKE, Montgomery, PA

Built 1954 Load: 37.2 t ADT: 49,637

PA TPK (I-276)

Fair

Over: SR 2018 BETH.PIKE

NEAR FORT WASHINGTON, Montgomery, PA

Built 1954 Load: 37.2 t ADT: 74,921

Showing 6,901-6,950 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.