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

HOMESTEAD RD; T318

Fair

Over: I-81; SR 0081

0.5 MI.E. OF EXIT 28, Lebanon, PA

Built 1968 Load: 24.5 t ADT: 217

NORTH 5TH AVENUE

Fair

Over: QUITTAPAHILLA CREEK

300 N OF E CUMBERLAND ST, Lebanon, PA

Built 1961 Load: 24.5 t ADT: 400

I-78 & PA 309

Fair

Over: SR 2010 & LT LEHIGH CR

0.8 M.S.OF CEDAR CREST, Lehigh, PA

Built 1958 Load: 24.5 t ADT: 79,207

SR 378(LR1007SB)

Fair

Over: SR1002(UNION BLVD.)LR159

AT CENTER CITY EXIT, Lehigh, PA

Built 1967 Load: 24.5 t ADT: 17,497

SR 4025 (LR 39059)

Fair

Over: TRIB. TO LYON CREEK

KISTLER ROAD, Lehigh, PA

Built 1949 Load: 24.5 t ADT: 351

PA TPK (I-476)

Fair

Over: T-858

1.5 MI NORTH OF EMERALD, Lehigh, PA

Built 1956 Load: 24.5 t ADT: 27,609

SR 0029 TR 29

Fair

Over: EARTH CONSERVANCY DR

HANOVER TWP .1 M N I-81, Luzerne, PA

Built 1969 Load: 24.5 t ADT: 23,772

SR 0081 I-81 SB

Fair

Over: SR 0080 I-80 WB

BUTLER TWP OVER I-80 WB, Luzerne, PA

Built 1965 Load: 24.5 t ADT: 16,397

I-81 NB

Fair

Over: SR 2007 NORTHAMPTON ST

I-81 NB OVER SR2007, Luzerne, PA

Built 1966 Load: 24.5 t ADT: 24,394

I-81 SB

Fair

Over: SR 2007 NORTHAMPTON ST

I-81 SB OVER SR2007, Luzerne, PA

Built 1966 Load: 24.5 t ADT: 25,843

I - 180 EBL

Fair

Over: SR8034/2039/LOYALSOCK CK

BOROUGH OF MONTOURSVILLE, Lycoming, PA

Built 1976 Load: 24.5 t ADT: 14,734

SR 173 GROVE CITY

Fair

Over: OVER BUTCHERY RUN

SANDY LAKE TOWNSHIP, Mercer, PA

Built 1930 Load: 24.5 t ADT: 1,547

SR 208

Fair

Over: OVER JOHNSTON RUN

SPRINGFIELD TOWNSHIP, Mercer, PA

Built 1935 Load: 24.5 t ADT: 3,745

SR 1018 MLLDGVLL.R

Fair

Over: OVER LAKE WILHELM

DEER CREEK TOWNSHIP, Mercer, PA

Built 1969 Load: 24.5 t ADT: 631

SR 2016 CHURCH RD

Fair

Over: OVER MILL CREEK

FINDLEY TOWNSHIP, Mercer, PA

Built 1952 Load: 24.5 t ADT: 139

SR 2019 POOLE ROAD

Fair

Over: OVER SR 79 NB/SB

LAKE TOWNSHIP, Mercer, PA

Built 1965 Load: 24.5 t ADT: 327

ON TSR 328

Fair

Over: BEAVER DAM RUN

2 MI N NEWTON HAMILTON, Mifflin, PA

Built 1940 Load: 24.5 t ADT: 642

PA 115

Fair

Over: POHOPOCO CREEK

3.1 MI.N.BROADHEADSVILLE, Monroe, PA

Built 1934 Load: 24.5 t ADT: 9,256

PA 115 (LR 45049)

Fair

Over: SR 80(LR 1009)

PA 115 0VER I-80, Monroe, PA

Built 1965 Load: 24.5 t ADT: 9,990

PA 33 (LR 796)

Fair

Over: US209(LR164ALT)&RAMPSE&F

AT 209 INTERCHANGE, Monroe, PA

Built 1963 Load: 24.5 t ADT: 44,976

SR 1003 (LR 45080)

Fair

Over: CRANBERRY RUN

@ PINEBROOK & HALLET RDS., Monroe, PA

Built 1932 Load: 24.5 t ADT: 3,989

SR 1016(LR 45014)

Fair

Over: LONGSHORE CREEK

SELLERSVILLE DRIVE, Monroe, PA

Built 1949 Load: 24.5 t ADT: 913

SR 2008 (LR 45008)

Fair

Over: LAKE CREEK

BOSSARDSVILLE RD., Monroe, PA

Built 1958 Load: 24.5 t ADT: 1,094

POTTSTOWN BY-PASS

Fair

Over: PORTER ROAD

SANATOGA 3139-C02, Montgomery, PA

Built 1966 Load: 24.5 t ADT: 55,039

MID-COUNTY EXWY.NB

Fair

Over: MATSONFORD/DEHAVEN RDS.

WEST CONSHOHOCKEN 3367J10, Montgomery, PA

Built 1976 Load: 24.5 t ADT: 53,181

PAWLINGS ROAD

Fair

Over: SCHUYLKILL RIVER

.9 Mi W of Pa-23 3365-E2, Montgomery, PA

Built 1987 Load: 24.5 t ADT: 12,103

PA TPK (I-276)

Fair

Over: PIONEER ROAD

EAST OF HATBORO, Montgomery, PA

Built 1954 Load: 24.5 t ADT: 88,801

SR 33 SB(LR 1098)

Fair

Over: SCHOENECK CREEK

0.75 MI N OF PA 248, Northampton, PA

Built 1972 Load: 24.5 t ADT: 31,190

EDGEWOOD AVENUE

Fair

Over: BUSHKILL CREEK

NEAR SR 2019, Northampton, PA

Built 1956 Load: 24.5 t ADT: 500

SR 0180 WB

Fair

Over: SR44 NS RR WARRIOR RUN

3 MI E OF WATSONTOWN, Northumberland, PA

Built 1971 Load: 24.5 t ADT: 8,015

T-572 TURBOT TWP.

Fair

Over: MUDDY RUN

0.5 MI N OF INT T589 T572, Northumberland, PA

Built 1969 Load: 24.5 t ADT: 50

8TH ST. SHAMOKIN

Fair

Over: SHAMOKIN CREEK

SHAMOKIN CITY, Northumberland, PA

Built 1937 Load: 24.5 t ADT: 2,400

US 22/322;SR 22 WB

Fair

Over: SR 1020

4.4 MI.NW OF AMITY HALL, Perry, PA

Built 1966 Load: 24.5 t ADT: 9,070

SR 4006

Fair

Over: BUCKWHEAT RUN

4 MI E OF ESHCOL, Perry, PA

Built 1956 Load: 24.5 t ADT: 222

SR 0402 TR 402

Fair

Over: PICKEREL LAKE

PORTER TWP .2 M N SR 2004, Pike, PA

Built 1932 Load: 24.5 t ADT: 1,584

US 206

Fair

Over: DELAWARE RIVER

MILFORD BOROUGH, Pike, PA

Built 1953 Load: 24.5 t ADT: 7,000

PA61(LR 141)

Fair

Over: LITTLE SCHUYLKILL RIVER

VILLAGE OF MOLINO, Schuylkill, PA

Built 1959 Load: 24.5 t ADT: 21,030

I-81 NB (LR 1005)

Fair

Over: SWATARA CREEK

0.5 MI. S. EXIT 100 (31), Schuylkill, PA

Built 1968 Load: 24.5 t ADT: 11,531

I-81 SB (LR 1005)

Fair

Over: SWATARA CREEK

0.5 MI. S. EXIT 100 (31), Schuylkill, PA

Built 1968 Load: 24.5 t ADT: 10,781

I-81 NB(LR 1005)

Fair

Over: PA 54(LR290) RAMP B&C

EXIT 131(37) N.B., Schuylkill, PA

Built 1967 Load: 24.5 t ADT: 11,495

SR 3013

Fair

Over: SWATARA CREEK

VILLAGE OF RAVINE, Schuylkill, PA

Built 1969 Load: 24.5 t ADT: 6,974

RAMP S TO NB 81

Fair

Over: READING & NORTHERN RR

MCADOO INT. RAMP TO NB 81, Schuylkill, PA

Built 1967 Load: 24.5 t ADT: 4,056

SR 522

Fair

Over: TRIBUTARY MIDDLE CREEK

0.5 MI E OF MIDDLEBURG, Snyder, PA

Built 1941 Load: 24.5 t ADT: 10,290

T310 CAMP GROUND R

Fair

Over: WHITES CREEK

1 MI.S.OF HARNEDSVILLE, Somerset, PA

Built 1970 Load: 24.5 t ADT: 50

SR 3005

Fair

Over: OVER KETTLE CREEK

4 MI S. OF HILLSGROVE, Sullivan, PA

Built 1958 Load: 24.5 t ADT: 52

T612 Brickhouse Rd

Fair

Over: GAYLORD CREEK

4 MI SW OF FRIENDSVILLE, Susquehanna, PA

Built 1903 Load: 24.5 t ADT: 50

SR4024 ELKHORN RD

Fair

Over: OVER CUMMINGS CREEK

1.25 MI N FARMINGTON HILL, Tioga, PA

Built 1954 Load: 24.5 t ADT: 201

US TR 15

Fair

Over: OVER WINFIELD CREEK

VILLAGE OF WINFIELD, Union, PA

Built 1930 Load: 24.5 t ADT: 16,071

SR 15 NBL

Fair

Over: T-519 TRIB SUSQ RVR

2 MI N OF NEW COLUMBIA, Union, PA

Built 1963 Load: 24.5 t ADT: 7,460

US 15 SB

Fair

Over: T-519 TRIB SUSQ RVR

2 MI N OF NEW COLUMBIA, Union, PA

Built 1963 Load: 24.5 t ADT: 8,708

Showing 1,401-1,450 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.