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 2018 LR39026

Fair

Over: PA TPK (I-476)

NEAR EMMAUS BOROUGH, Lehigh, PA

Built 1955 Load: 30.8 t ADT: 1,226

PA TPK (I-476)

Fair

Over: SR 4008 LR 39049

WEST OF BALLIETTSVILLE, Lehigh, PA

Built 1955 Load: 30.8 t ADT: 30,563

SR8005(LR1045RPLB)

Fair

Over: NORFOLK SOUTHERN RR

LEHIGH ST. EXIT(RAMPLB)WB, Lehigh, PA

Built 1988 Load: 30.8 t ADT: 6,058

SR 2004

Fair

Over: LUZ CO RAIL AUTHORITY

JENKINS TWP .7M E SR 1021, Luzerne, PA

Built 1951 Load: 30.8 t ADT: 8,365

SR 2042

Fair

Over: SR 0081 I-81 NB EXIT 159

RICE TWP OVER I-81 NB, Luzerne, PA

Built 1964 Load: 30.8 t ADT: 5,054

SR 220 SBL

Fair

Over: OVER T-331

2.5 MI WEST NEWBERRY, Lycoming, PA

Built 1971 Load: 30.8 t ADT: 8,963

S.R. 1010

Fair

Over: OVER ROARING BRANCH

5 MI W OF ROARING BRANCH, Lycoming, PA

Built 1907 Load: 30.8 t ADT: 154

SR 2083

Fair

Over: OVER LICK RUN

1MI W OF GLEN MAWR, Lycoming, PA

Built 1934 Load: 30.8 t ADT: 86

T-708

Fair

Over: BEAVER DAM RUN

1.7 MI. NE OF LAIRDSVILLE, Lycoming, PA

Built 1920 Load: 30.8 t ADT: 50

SR 6-US 6

Fair

Over: COLEMAN CREEK

2 MI E PORT ALLEGANY, McKean, PA

Built 1967 Load: 30.8 t ADT: 3,572

SR 346-PA 346

Fair

Over: WILLOW CREEK

10 MI W BRADFORD, McKean, PA

Built 1968 Load: 30.8 t ADT: 520

T-395 WIND FALL RD

Fair

Over: KNAPP CREEK

300 FT WEST OF SR 346, McKean, PA

Built 1996 Load: 30.8 t ADT: 150

SR 58 COLLEGE AVE.

Fair

Over: OVER MATHAY RUN

HEMPFIELD TOWNSHIP, Mercer, PA

Built 1939 Load: 30.8 t ADT: 4,239

SR 60 NB/SB BEAVER

Fair

Over: OVER SR 18 S HERMITAGE

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 Load: 30.8 t ADT: 7,590

SR 79 NB

Fair

Over: OVER LT SHENANGO R & RR

LAKE TOWNSHIP, Mercer, PA

Built 1969 Load: 30.8 t ADT: 5,845

SR 173 MAIN STREET

Fair

Over: OVER SANDY CREEK

SANDY LAKE BOROUGH, Mercer, PA

Built 1933 Load: 30.8 t ADT: 2,842

SR 3007 PLSKI-MRCR

Fair

Over: OVER LT NESHANNOCK CK

EAST LACKAWANNOCK TWP., Mercer, PA

Built 1964 Load: 30.8 t ADT: 658

SR 322-US 322

Fair

Over: KISH CR & TWP RD 439

REEDSVILLE, Mifflin, PA

Built 1964 Load: 30.8 t ADT: 11,457

SR 322-US 322

Fair

Over: KISH CR & TWP RD 439

REEDSVILLE, Mifflin, PA

Built 1964 Load: 30.8 t ADT: 11,712

I-80 EB (LR 1002)

Fair

Over: SR 4004 (LR 45024)

2.3 MI. W. OF PA 715, Monroe, PA

Built 1962 Load: 30.8 t ADT: 17,842

I-80 WB (LR1002)

Fair

Over: SR 2005(LR 45019)

OVER SHAFERS SCHOOLHOUSE, Monroe, PA

Built 1963 Load: 30.8 t ADT: 17,631

I-380 (LR 1002)

Fair

Over: POCONO SUMMIT CREEK

3.6 MI N. OF I-80, Monroe, PA

Built 1969 Load: 30.8 t ADT: 22,541

SR 534 (LR 45045)

Fair

Over: DOTTERS CREEK

0.6 MI.N.OF KRESGESVILLE, Monroe, PA

Built 1959 Load: 30.8 t ADT: 3,033

SR 3022 (LR 45085)

Fair

Over: TRIB. TO MCMICHAEL CR.

1 MI.E.OF US 209, Monroe, PA

Built 1951 Load: 30.8 t ADT: 722

SR 4012 (LR 45081)

Fair

Over: SR 80(LR 1002)

OVER I-80, Monroe, PA

Built 1962 Load: 30.8 t ADT: 2,584

T-313 MARTZ RD

Fair

Over: POCONO CREEK

0.25 MILE FROM INT.45033, Monroe, PA

Built 1956 Load: 30.8 t ADT: 14

VALLEY FORGE ROAD

Fair

Over: VALLEY CREEK

VAL FORGE PK 3365F05, Montgomery, PA

Built 1934 Load: 30.8 t ADT: 13,270

E PHILADELPHIA AVE

Fair

Over: PA-100

GILBERTSVIL 2915A08, Montgomery, PA

Built 1964 Load: 30.8 t ADT: 16,115

LIMEKILN PIKE

Fair

Over: SANDY RUN

FITZWATERTN 3258-D10, Montgomery, PA

Built 1810 Load: 30.8 t ADT: 9,367

MID-COUNTY EXWY.NB

Fair

Over: PLYMOUTH CREEK;ACCESS RD

PLYMOUTH TWP. 3368A07, Montgomery, PA

Built 1974 Load: 30.8 t ADT: 53,181

HOFFMANSVILLE ROAD

Fair

Over: BRANCH SCHLEGEL RUN

SASSAMANSVILLE 2915J06, Montgomery, PA

Built 1924 Load: 30.8 t ADT: 3,453

MORRIS ROAD

Fair

Over: WISSAHICKON CREEK

FORT WASHING 3257F8, Montgomery, PA

Built 1841 Load: 30.8 t ADT: 8,825

BETHLEHEM PIKE

Fair

Over: ROSE VALLEY CREEK

1.5MI.N.PA.TPK. 3257F04, Montgomery, PA

Built 1942 Load: 30.8 t ADT: 8,408

WATER STREET ROAD

Fair

Over: BRANCH SKIPPACK CREEK

EVANS ST PK 3142E10, Montgomery, PA

Built 1932 Load: 30.8 t ADT: 1,194

WARTMAN ROAD

Fair

Over: LODAL CREEK

GRATERFORD 3141G5, Montgomery, PA

Built 1964 Load: 30.8 t ADT: 2,910

TOWNSHIP LINE ROAD

Fair

Over: POTTSTOWN EXPRESSWAY

ROYERSFORD 3140F09, Montgomery, PA

Built 1976 Load: 30.8 t ADT: 15,786

I-80 EBL

Fair

Over: OVER MAHONING CREEK

2 MI E OF DANVILLE EXIT, Montour, PA

Built 1963 Load: 30.8 t ADT: 13,445

PA 33 (LR 796)

Fair

Over: SR1007 {BROADWAY}(LR165)

NEAR MONROE COUNTY LINE, Northampton, PA

Built 1958 Load: 30.8 t ADT: 40,613

SR 3004 (LR 48003)

Fair

Over: BLACK RIVER

0.75 MI.W.OF HELLERTOWN, Northampton, PA

Built 1938 Load: 30.8 t ADT: 6,682

VALLEY ROAD

Fair

Over: HOKENDAUQUA CREEK

0.2 MILES EAST OF SR 4003, Northampton, PA

Built 1966 Load: 30.8 t ADT: 200

BLOSSOM HILL ROAD

Fair

Over: BRANCH OF MONOCACY CREEK

EAST OF BATH, Northampton, PA

Built 1984 Load: 30.8 t ADT: 60

STONE POST ROAD

Fair

Over: MONOCACY CREEK

WEST OF PA 987, Northampton, PA

Built 1981 Load: 30.8 t ADT: 200

T-666

Fair

Over: 1045 OVER I-180 EB & WB

2.5 MI.SOUTH OF MUNCY, Northumberland, PA

Built 1970 Load: 30.8 t ADT: 193

S.R. 225

Fair

Over: OVER MAHANOY CREEK

VILLAGE OF DORNSIFE, Northumberland, PA

Built 1941 Load: 30.8 t ADT: 2,104

SR 1007

Fair

Over: OVER NORFOLK SOUTHERN RR

3 MI S OF WATSONTOWN, Northumberland, PA

Built 1971 Load: 30.8 t ADT: 3,160

SR 3010

Fair

Over: OVER MOUSE RUN

VILLAGE OF RED CROSS, Northumberland, PA

Built 1946 Load: 30.8 t ADT: 740

SR 3018

Fair

Over: OVER SNOW CREEK

6 MILES EAST OF PILLOW, Northumberland, PA

Built 1938 Load: 30.8 t ADT: 819

SR 4001

Fair

Over: KIPPS RUN

RIVERSIDE BORO, Northumberland, PA

Built 1941 Load: 30.8 t ADT: 1,551

US 22; SR 0022 WB

Fair

Over: S.R. 1010

0.8MI SE OF MILLERSTOWN, Perry, PA

Built 1966 Load: 30.8 t ADT: 8,725

PA 850; SR 0850

Fair

Over: PERRY FURNACE RUN

2MI WEST OF DROMGOLD, Perry, PA

Built 1928 Load: 30.8 t ADT: 4,321

Showing 3,401-3,450 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.