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

I-180 WB

Fair

Over: OVER MUNCY CREEK

1 MI NW OF MUNCY, Lycoming, PA

Built 1973 Load: 35.4 t ADT: 8,866

SR 0220 NB

Fair

Over: OVER SEDA-COG RR

NORTH OF JERSEY SHORE, Lycoming, PA

Built 1968 Load: 35.4 t ADT: 9,367

SR 220 SB

Fair

Over: OVER SEDA-COG RR

NORTH OF JERSEY SHORE, Lycoming, PA

Built 1968 Load: 35.4 t ADT: 9,314

S.R.2029

Fair

Over: MILLERS RUN

.1 MI S INTERSECT L.R 18, Lycoming, PA

Built 1982 Load: 35.4 t ADT: 15,619

SR2049

Fair

Over: OVER I-180 & RAMP B

LYCOMING MALL INTERCHANGE, Lycoming, PA

Built 1974 Load: 35.4 t ADT: 3,294

S.R.2053

Fair

Over: OVER LR 1073 (I-180)

1 MI N OF MUNCY, Lycoming, PA

Built 1973 Load: 35.4 t ADT: 1,714

S.R. 4007

Fair

Over: BLOCKHOUSE CREEK

4MI SOUTH OF LIBERTY, Lycoming, PA

Built 1961 Load: 35.4 t ADT: 67

T-665

Fair

Over: BLOCKHOUSE CREEK

2.6 MI. N. OF BUTTONWOOD, Lycoming, PA

Built 1935 Load: 35.4 t ADT: 50

SR 219-US 219

Fair

Over: TUNUNGWANT CREEK

BRADFORD, McKean, PA

Built 1977 Load: 35.4 t ADT: 6,121

SR 79 NB

Fair

Over: OVER LAKE WILHELM

NEW VERNON TOWNSHIP, Mercer, PA

Built 1969 Load: 35.4 t ADT: 6,476

SR 79 SB

Fair

Over: OVER LAKE WILHELM

NEW VERNON TOWNSHIP, Mercer, PA

Built 1969 Load: 35.4 t ADT: 6,474

SR 258 LAKE ROAD

Fair

Over: OVER MAGARGEE RUN

CLARK BOROUGH, Mercer, PA

Built 1965 Load: 35.4 t ADT: 606

SR 3011 BETHEL RD

Fair

Over: SR 80 EB & WB

SHENANGO TOWNSHIP, Mercer, PA

Built 1965 Load: 35.4 t ADT: 984

SR 3022 RUTLEDGE R

Fair

Over: OVER SHENANGO RIVER

JEFFERSON TOWNSHIP, Mercer, PA

Built 1967 Load: 35.4 t ADT: 258

BRIDGE 2109 T-786

Fair

Over: OVER FOX RUN

CLARK ROAD JACKSON TWP., Mercer, PA

Built 1976 Load: 35.4 t ADT: 93

BRIDGE 207 T-905

Fair

Over: OVER CROOKED CREEK

K.O. ROAD SUGAR GROVE, Mercer, PA

Built 1975 Load: 35.4 t ADT: 259

PA 33 (LR 796)

Fair

Over: SR 2008 (LR 949)

0.1 MI.S.OF 209 INTER., Monroe, PA

Built 1963 Load: 35.4 t ADT: 40,613

I-80 (LR1002)

Fair

Over: SR 2009 POCONO CR.

OVER SR 2009(BRIDGE ST), Monroe, PA

Built 1959 Load: 35.4 t ADT: 64,611

I 80(LR 794)

Fair

Over: FORGE RD. D&LRR

E.STROUDSBURG, Monroe, PA

Built 1958 Load: 35.4 t ADT: 89,629

PA 447(LR 324)

Fair

Over: STONY RUN

4 MI.S. OF CANADENSIS, Monroe, PA

Built 1950 Load: 35.4 t ADT: 2,442

I-80 EASTBOUND

Fair

Over: D-L RR LOCAL RD DEL. RIV

DELAWARE WATER GAP BORO., Monroe, PA

Built 1953 Load: 35.4 t ADT: 24,900

I-80 WESTBOUND

Fair

Over: D-L RR LOCAL RD DEL. RV

DELAWARE WATER GAP BORO., Monroe, PA

Built 1953 Load: 35.4 t ADT: 22,100

TRAFFIC ROUTE 100

Fair

Over: MANATAWNY STREET

POTTSTOWN 3026-E09, Montgomery, PA

Built 1958 Load: 35.4 t ADT: 24,732

LIMEKILN PIKE

Fair

Over: PINE RUN

U. DUBLIN TWP 3258D08, Montgomery, PA

Built 1946 Load: 35.4 t ADT: 12,960

DEKALB PIKE

Fair

Over: BRANCH STONY CR/ 3256-A8

NORTH TR.422 3256-A08, Montgomery, PA

Built 1973 Load: 35.4 t ADT: 8,516

OLD YORK ROAD

Fair

Over: BRANCH PENNYPACK CREEK

HATBORO 3259D01, Montgomery, PA

Built 1941 Load: 35.4 t ADT: 14,809

RIDGE PIKE

Fair

Over: MID-COUNTY EXPRESSWAY

PLYMOUTH TOWNSHIP 29F12, Montgomery, PA

Built 1978 Load: 35.4 t ADT: 41,177

S 202 - RAMP R

Fair

Over: SCHUYLKILL PARKWAY

BRIDGEPORT 28J10/3367D4, Montgomery, PA

Built 1972 Load: 35.4 t ADT: 563

GYPSY HILL ROAD

Fair

Over: TREWELLYN CREEK

2 MI N 73 3256K01, Montgomery, PA

Built 1982 Load: 35.4 t ADT: 1,113

BETHLEHEM PIKE

Fair

Over: BRANCH WISSAHICKON CREEK

SOUTH OF PENNA-73 3369F03, Montgomery, PA

Built 1961 Load: 35.4 t ADT: 15,385

MATSONFORD ROAD

Fair

Over: ELIZABETH STREET

WEST CONSHOHOCKEN 3367K10, Montgomery, PA

Built 1977 Load: 35.4 t ADT: 19,909

BELVOIR ROAD

Fair

Over: NORFOLK SOUTHERN/3367-K4

.5MI.N.RIDGE PIKE 29E10, Montgomery, PA

Built 1983 Load: 35.4 t ADT: 8,136

KNIGHT ROAD

Fair

Over: GREEN LANE RESERVOIR

0.7 Mi E SR 0663 2916-J2, Montgomery, PA

Built 1956 Load: 35.4 t ADT: 2,769

WOODMONT ROAD

Fair

Over: ARROWMINK CREEK

100 FT E SR23 ADC3368-A10, Montgomery, PA

Built 1932 Load: 35.4 t ADT: 1,802

PA TPK (I-276)

Fair

Over: TRIB. DIAMOND RUN

SOUTH OF NORRISTOWN, Montgomery, PA

Built 1954 Load: 35.4 t ADT: 65,138

PA TPK (I-276)

Fair

Over: SEPTA RR.

NEAR FORT WASHINGTON, Montgomery, PA

Built 1954 Load: 35.4 t ADT: 74,921

MARSHALL STREET

Fair

Over: SAW MILL RUN

700 Ft SE US-202 3367-F2, Montgomery, PA

Built 1910 Load: 35.4 t ADT: 3,300

ARCH STREET

Fair

Over: SAW MILL RUN

900 SE of 202NB 3367-F2, Montgomery, PA

Built 1900 Load: 35.4 t ADT: 5,600

I-80 WBL

Fair

Over: KASE RUN & PRIVATE DRIVE

3 MI E OF DANVILLE EXIT, Montour, PA

Built 1963 Load: 35.4 t ADT: 13,961

SR 2028 (LR 48017)

Fair

Over: PA 33 (LR 1098)

CHURCH RD. OVER PA.33, Northampton, PA

Built 1972 Load: 35.4 t ADT: 3,788

HAHN ROAD

Fair

Over: BUSHKILL CREEK

1 MILE N OF SR 4012, Northampton, PA

Built 1986 Load: 35.4 t ADT: 50

T-701

Fair

Over: TRIB. TO JACOBY CREEK

NORTH OF PA 512, Northampton, PA

Built 1986 Load: 35.4 t ADT: 100

EVANS ROAD

Fair

Over: OUGHOUGHTON CREEK

N. OF RICHMOND / PA 611, Northampton, PA

Built 1984 Load: 35.4 t ADT: 30

SR I-80 EBL

Fair

Over: OVER SR254 & LIMESTONE C

1.5 MI E OF MILTON, Northumberland, PA

Built 1962 Load: 35.4 t ADT: 12,929

I-80 WB

Fair

Over: OVER SR254/LIMESTONE RUN

LIMESTONEVILLE EXIT, Northumberland, PA

Built 1962 Load: 35.4 t ADT: 13,173

SR 147

Fair

Over: OVER TWP. 589

0.5 MI NORTH OF MILTON, Northumberland, PA

Built 1971 Load: 35.4 t ADT: 9,520

S.R. 3010

Fair

Over: OVER SCHWABEN CREEK

1 MI E OF RED CROSS, Northumberland, PA

Built 1931 Load: 35.4 t ADT: 740

BRIDGE STREET

Fair

Over: SHAMOKIN CREEK

WEIGH SCALES, Northumberland, PA

Built 1965 Load: 35.4 t ADT: 75

US 22/322; SR 0022

Fair

Over: SR1028 Huggins Rd

3 MI.N. OF AMITY HALL, Perry, PA

Built 1964 Load: 35.4 t ADT: 17,941

SR2009 RAYMONDSKIL

Fair

Over: SR 0084 I-84

DINGMAN TWP OVER I-84, Pike, PA

Built 1966 Load: 35.4 t ADT: 293

Showing 6,251-6,300 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.