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

US 22; SR 0022

Fair

Over: INDIANTOWN RUN

2 MI.W. OF ONO, Lebanon, PA

Built 1946 Load: 42.6 t ADT: 8,903

US 22; ALLENTOWN B

Fair

Over: REEDS CREEK

0.5 MI.W. OF ONO, Lebanon, PA

Built 1946 Load: 42.6 t ADT: 8,903

GRAVEL HILL RD.

Fair

Over: SWATARA CREEK

4 MI.N. PALMYRA, Lebanon, PA

Built 1967 Load: 42.6 t ADT: 3,641

SR 4013 JONESTOWN

Fair

Over: RACOON CREEK

0.25 MI.N.W. OF US 22, Lebanon, PA

Built 1928 Load: 42.6 t ADT: 245

WALNUT STREET

Fair

Over: QUITTAPAHILLA CREEK

WALNUT ST;QUITTAPAHILLA, Lebanon, PA

Built 1961 Load: 42.6 t ADT: 4,000

US 22(LR 771)

Fair

Over: T-862(28TH ST.)

US 22 OVER 28TH ST., Lehigh, PA

Built 1953 Load: 42.6 t ADT: 76,351

I78-US22 (LR443)

Fair

Over: SR 3022 *(OLD 22)

2 MI.E.OF PA863, Lehigh, PA

Built 1958 Load: 42.6 t ADT: 37,909

SR 2017(LR39025)

Fair

Over: LITTLE LEHIGH CREEK

BROOKSIDE ROAD, Lehigh, PA

Built 1957 Load: 42.6 t ADT: 8,650

SR 0115 TR 115 SB

Fair

Over: SR 0081 NB & SB

PLAINS TWP OVR I-81 NB&SB, Luzerne, PA

Built 1963 Load: 42.6 t ADT: 9,024

SR 0315 TR 315

Fair

Over: GARDNERS CREEK

LAFLIN BORO JCT SR 2039, Luzerne, PA

Built 1963 Load: 42.6 t ADT: 13,167

SR 2048

Fair

Over: SR 0080 EB & WB

FOSTER TWP OVER I-80, Luzerne, PA

Built 1966 Load: 42.6 t ADT: 174

SR 6309 SB

Fair

Over: CONRAIL

ASHLEY BO .7 M S SR 2005, Luzerne, PA

Built 1988 Load: 42.6 t ADT: 9,158

MAYOCK STREET

Fair

Over: MILL CREEK

3/4 MI NORTH OF SR 2020, Luzerne, PA

Built 1991 Load: 42.6 t ADT: 800

T-497 PAVLICK RD

Fair

Over: HARVEYS CREEK

300 FT WEST OF SR 29, Luzerne, PA

Built 1992 Load: 42.6 t ADT: 210

HENRICO ROAD

Fair

Over: HUNTINGTON CREEK

NEAR KYTTLE PIKE ROAD, Luzerne, PA

Built 1994 Load: 42.6 t ADT: 25

SR 1017 #2 LYC CK

Fair

Over: OVER LYCOMING CREEK

3 MI N OF WILLIAMSPORT, Lycoming, PA

Built 1957 Load: 42.6 t ADT: 5,505

I -180

Fair

Over: OVER MAYNARD STREET

CITY OF WILLIAMSPORT, Lycoming, PA

Built 1972 Load: 42.6 t ADT: 18,604

SR 2085 EDKIN HIL

Fair

Over: MUNCY CREEK

2MI.E.OF GLEN MAWR, Lycoming, PA

Built 1941 Load: 42.6 t ADT: 179

SR 79 NB

Fair

Over: OVER SR 2017 N.FOSTER RD

JACKSON TOWNSHIP, Mercer, PA

Built 1965 Load: 42.6 t ADT: 5,845

SR 79 SB

Fair

Over: OVER SR 2017 N.FOSTER RD

JACKSON TOWNSHIP, Mercer, PA

Built 1965 Load: 42.6 t ADT: 6,459

SR 80 EB

Fair

Over: OVER T300 GREENFIELD RD

LACKAWANNOCK TOWNSHIP, Mercer, PA

Built 1965 Load: 42.6 t ADT: 11,198

SR 80 WB

Fair

Over: OVER T300 GREENFIELD RD

LACKAWANNOCK TOWNSHIP, Mercer, PA

Built 1965 Load: 42.6 t ADT: 11,377

SR 80 WB

Fair

Over: OVER ABNDN.RR/NESHNK.CK

FINDLEY TOWNSHIP, Mercer, PA

Built 1999 Load: 42.6 t ADT: 12,975

BRIDGE 1203 T-918

Fair

Over: OVER MILL CREEK

FOSTER RD. MILL CREEK TWP, Mercer, PA

Built 1986 Load: 42.6 t ADT: 58

BRIDGE 1312 T-587

Fair

Over: OVER BRUSH RUN

W.LAKE RD.PYMATUNING TWP., Mercer, PA

Built 1965 Load: 42.6 t ADT: 113

SR 22-US 22

Fair

Over: SR 8018 AND KISH CREEK

LEWISTOWN, Mifflin, PA

Built 1958 Load: 42.6 t ADT: 6,704

SR 22-US 22

Fair

Over: SR 8018 AND KISH CREEK

LEWISTOWN, Mifflin, PA

Built 1958 Load: 42.6 t ADT: 7,325

SR8004(LR1002RAMP)

Fair

Over: I-80 WB(LR 1002)

I-80 EB TO I-380 NB, Monroe, PA

Built 1964 Load: 42.6 t ADT: 2,453

SCHUYLKILL EWAY WB

Fair

Over: RAMPS R N & X

CONSHOHOCKEN INTER.35D04, Montgomery, PA

Built 1975 Load: 42.6 t ADT: 29,314

MID-COUNTY EXWY.

Fair

Over: NORFOLK SOUTHERN

NORRISTOWN EXIT 25 29H10, Montgomery, PA

Built 1990 Load: 42.6 t ADT: 92,993

EASTON ROAD

Fair

Over: BRANCH PENNYPACK CREEK

T-P INTER. 3259-A05, Montgomery, PA

Built 1959 Load: 42.6 t ADT: 27,808

CONSHOHOCKEN ROAD

Fair

Over: UPPER MERION & PLYMOUTH

PLYMOUTH TWP.35D01/3367K8, Montgomery, PA

Built 1964 Load: 42.6 t ADT: 7,779

TOWNSHIP LINE ROAD

Fair

Over: BRANCH MINGO CREEK

BUCKWALTER 3140G9, Montgomery, PA

Built 1996 Load: 42.6 t ADT: 15,785

WEST GARDEN ROAD

Fair

Over: SUNNYBROOK CREEK

.12 MI NE SR 73 3369-J2, Montgomery, PA

Built 1957 Load: 42.6 t ADT: 1,720

RENNINGER ROAD

Fair

Over: SCIOTO CREEK

0.4MI NE OF SR73 2916-E10, Montgomery, PA

Built 1933 Load: 42.6 t ADT: 200

T-110 (SB)

Fair

Over: PA TPK (I-276)

NEAR KING OF PRUSSIA, Montgomery, PA

Built 1954 Load: 42.6 t ADT: 200

RAMP J (309 SB)

Fair

Over: BRANCH OF WISSAHICKON CR

CHURCH RD.INTERCH 3369H02, Montgomery, PA

Built 1958 Load: 42.6 t ADT: 3,945

PA 33(LR 796)

Fair

Over: SR1026(CENTER ST/LR48088

1 MI.N.OF PA 512, Northampton, PA

Built 1958 Load: 42.6 t ADT: 40,493

SR 78EB(LR 1045)

Fair

Over: SR 2014(LR 48090)

OVER REDINGTON RD., Northampton, PA

Built 1987 Load: 42.6 t ADT: 29,346

PA 248 (LR 471)

Fair

Over: BERTSCH CREEK

BERLINSVILLE, Northampton, PA

Built 1995 Load: 42.6 t ADT: 10,272

SR 3003 (LR 48003)

Fair

Over: BLACK RIVER

@ BINGEN & BLACK RIVER RD, Northampton, PA

Built 1959 Load: 42.6 t ADT: 6,899

SR 4003 (LR 48061)

Fair

Over: HOKENDAUQUA CREEK

KREIDERSVILLE ROAD, Northampton, PA

Built 1962 Load: 42.6 t ADT: 3,272

GUM ROAD

Fair

Over: LITTLE BUSHKILL CREEK

NORTH OF RASLEYTOWN, Northampton, PA

Built 1960 Load: 42.6 t ADT: 100

SR 125 (TR125 SBL)

Fair

Over: OVER SHAMOKIN CR.

CITY OF SHAMOKIN, Northumberland, PA

Built 1905 Load: 42.6 t ADT: 3,360

SR 2046

Fair

Over: TRIB TO MAHANOY CR

2 MI SW OF GOWEN CITY, Northumberland, PA

Built 1939 Load: 42.6 t ADT: 114

SR 4005

Fair

Over: OVER SHAMOKIN CREEK

SNYDERTOWN BORO, Northumberland, PA

Built 1930 Load: 42.6 t ADT: 746

T337 L.MAHANOY TWP

Fair

Over: EMRICKS CREEK

1 MI. S. MANDATA, Northumberland, PA

Built 1986 Load: 42.6 t ADT: 250

PA 274; SR 0274

Fair

Over: BIXLER RUN

1 MI E. OF FORT ROBINSON, Perry, PA

Built 1933 Load: 42.6 t ADT: 2,957

SR 2001

Fair

Over: ADAMS CREEK

DELAWARE TWP .8M N TR 739, Pike, PA

Built 1984 Load: 42.6 t ADT: 4,375

PA 443 (LR 754)

Fair

Over: LITTLE SCHUYLKILL RIVER

1 MI. N. OF CLAMTOWN, Schuylkill, PA

Built 1964 Load: 42.6 t ADT: 4,367

Showing 8,651-8,700 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.