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

BRICKER LANE T-421

Fair

Over: BECK CREEK

.6 SE ANNVILLE BECK CREEK, Lebanon, PA

Built 1973 Load: 39.0 t ADT: 500

ROCHERTY ROAD

Fair

Over: SNITZ CREEK

2 S.LEB.CITY/SNITZ CREEK, Lebanon, PA

Built 1962 Load: 39.0 t ADT: 800

CHERRY STREET

Fair

Over: TULPEHOCKEN CR.

MUTH/CENTER TULPEHOCKEN, Lebanon, PA

Built 1972 Load: 39.0 t ADT: 200

PA 100(LR 486)

Fair

Over: SWABIA CREEK

MAIN ST. MACUNGIE, Lehigh, PA

Built 1969 Load: 39.0 t ADT: 11,577

SR 4014 (LR 39052)

Fair

Over: FELLS CREEK

NEFFS LAURY RD.@ SCHEIDYS, Lehigh, PA

Built 1969 Load: 39.0 t ADT: 324

PA TPK (I-476)

Fair

Over: SR 2040 LR39106

2 MI SOUTH OF EMMAUS, Lehigh, PA

Built 1955 Load: 39.0 t ADT: 44,406

SR 3034

Fair

Over: SR 0081 I-81 NB&SB

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

Built 1966 Load: 39.0 t ADT: 1,970

HUNTINGTON CRK RD

Fair

Over: PHILLIPS CREEK

1 MI NORTH OF SR 4015, Luzerne, PA

Built 1993 Load: 39.0 t ADT: 40

PA TPK (I-476)

Fair

Over: SR 2041 LR40041

2 MI N OF LEHIGH RIVER, Luzerne, PA

Built 1956 Load: 39.0 t ADT: 17,056

SR 15 NBL

Fair

Over: NB OVER LYC CK/CK DRAINS

CITY OF WILLIAMSPORT, Lycoming, PA

Built 1974 Load: 39.0 t ADT: 13,764

SR 0044 (LR 266)

Fair

Over: OVER PINE CREEK

1 MILE N OF WATERVILLE, Lycoming, PA

Built 1975 Load: 39.0 t ADT: 1,422

I 180 EB

Fair

Over: E.B. OVER S.R. 2044

1 MI E OF MUNCY, Lycoming, PA

Built 1973 Load: 39.0 t ADT: 6,794

SR 284

Fair

Over: OVER BONNELL RUN.

0.5 MI N OF ENGLISH CTR., Lycoming, PA

Built 1948 Load: 39.0 t ADT: 112

SR 405

Fair

Over: OVER TRIB TO SUSQUEHANNA

3 MI SW OF MUNCY BORO, Lycoming, PA

Built 1921 Load: 39.0 t ADT: 4,462

SR 2061

Fair

Over: OVER BEAVER RUN

6 MI N OF LAIRDSVILLE, Lycoming, PA

Built 1939 Load: 39.0 t ADT: 151

T-776 (CTY BDG 113

Fair

Over: ENGLISH RUN

0.5 MI. W. ENGLISH CENTER, Lycoming, PA

Built 1962 Load: 39.0 t ADT: 250

SR 219-US 219

Fair

Over: KINZUA CREEK

TALLY HO, McKean, PA

Built 1978 Load: 39.0 t ADT: 4,684

SR 219-US 219

Fair

Over: BUFF & PITT RR/PRIVATE

2 MI N BRADFORD, McKean, PA

Built 1977 Load: 39.0 t ADT: 3,008

SR 346-PA 346

Fair

Over: KNAPP CREEK

DUKE CENTER, McKean, PA

Built 1929 Load: 39.0 t ADT: 1,177

SR 62 FRANKLIN RD.

Fair

Over: OVER YELLOW CREEK

JACKSON TOWNSHIP, Mercer, PA

Built 1948 Load: 39.0 t ADT: 3,760

SR 358 HADLEY ROAD

Fair

Over: OVER SR 79 NB/SB

NEW VERNON TOWNSHIP, Mercer, PA

Built 1969 Load: 39.0 t ADT: 2,346

SR 2028 CORTNY ML.

Fair

Over: OVER WOLF CREEK

LIBERTY TOWNSHIP, Mercer, PA

Built 1965 Load: 39.0 t ADT: 245

BRIDGE 1508 T-660

Fair

Over: OVER OTTER CREEK BRANCH

MARSTELLER RD. FREDONIA, Mercer, PA

Built 1982 Load: 39.0 t ADT: 327

ON TSR 822

Fair

Over: LAUREL RUN

2 MI NE MILROY, Mifflin, PA

Built 1968 Load: 39.0 t ADT: 1,047

I-80 WB

Fair

Over: I-380 SB

I-80WB/I380SB TO I-80EB, Monroe, PA

Built 1964 Load: 39.0 t ADT: 18,399

I-80(LR 794)

Fair

Over: BRODHEAD CREEK / D&LRR

NEAR PAPERMILL ROAD, Monroe, PA

Built 1958 Load: 39.0 t ADT: 33,551

PA 611

Fair

Over: SWIFTWATER CREEK

SWIFTWATER, Monroe, PA

Built 1957 Load: 39.0 t ADT: 21,965

SR 2004(LR 165)

Fair

Over: PA 33

PA33 INTERCHANGE, Monroe, PA

Built 1963 Load: 39.0 t ADT: 5,595

SR 3015(LR 45006)

Fair

Over: AQUASHICOLA CREEK

ROLLING HILLS ROAD, Monroe, PA

Built 1960 Load: 39.0 t ADT: 1,250

BIG ROAD

Fair

Over: SWAMP CREEK

HICKORY PARK 2915K10, Montgomery, PA

Built 1977 Load: 39.0 t ADT: 16,052

SCHUYLKILL EXPWAY.

Fair

Over: S.GULPH SEPTA CRK LANE

GULPH MILLS 3367-F10, Montgomery, PA

Built 1950 Load: 39.0 t ADT: 68,760

EASTON ROAD

Fair

Over: BRANCH PENNYPACK CREEK

S.TURNPIKE INTER. 3259A05, Montgomery, PA

Built 1959 Load: 39.0 t ADT: 27,808

BETHLEHEM PIKE

Fair

Over: WILLOW RUN

1 MILE TO PENLLYN 3257D01, Montgomery, PA

Built 1934 Load: 39.0 t ADT: 9,021

CHURCH ROAD

Fair

Over: TOOKANY CREEK

2.5MI.WEST PHILA. 3370K09, Montgomery, PA

Built 1972 Load: 39.0 t ADT: 10,656

TERWOOD ROAD

Fair

Over: BR. PENNYPACK CREEK

HEATON BORO. 3259C05, Montgomery, PA

Built 1966 Load: 39.0 t ADT: 18,034

GERMANTOWN PIKE

Fair

Over: PLYMOUTH CREEK / 3368-E4

GERMANTOWN PIKE, Montgomery, PA

Built 1962 Load: 39.0 t ADT: 27,712

SUMNEYTOWN PIKE

Fair

Over: WISSAHICKON CREEK

2 Mi NW US-202 3144-D6, Montgomery, PA

Built 1927 Load: 39.0 t ADT: 18,016

CHURCH ROAD

Fair

Over: SWAMP CREEK

0.88 MI SE of SR 0073, Montgomery, PA

Built 1890 Load: 39.0 t ADT: 838

BLACK ROCK RD

Fair

Over: MILL CREEK

0.9 MI W SR23 ADC 3478-C5, Montgomery, PA

Built 1908 Load: 39.0 t ADT: 2,740

LUDWIG ROAD

Fair

Over: SWAMP CREEK

0.4 MI N SR73 ADC 2915-J9, Montgomery, PA

Built 1996 Load: 39.0 t ADT: 497

OLD GULPH ROAD

Fair

Over: MILL CREEK

0.95 MI S OF SR 0023, Montgomery, PA

Built 1936 Load: 39.0 t ADT: 6,605

ASHBOURNE-ROAD

Fair

Over: TOOKANY CREEK

ASHBOURNE;SOLDIER 3481E1, Montgomery, PA

Built 1990 Load: 39.0 t ADT: 8,878

NEW HOPE ST

Fair

Over: SAW MILL RUN 3255K10

0.89 MI E OF US 0202, Montgomery, PA

Built 1967 Load: 39.0 t ADT: 6,770

MIDDLE CREEK ROAD

Fair

Over: MIDDLE CREEK

0.5MI NE OF SR 73 2915-G9, Montgomery, PA

Built 1931 Load: 39.0 t ADT: 250

PA TPK (I-276)

Fair

Over: WISSAHICKON CR DB-135W

NEAR FORT WASHINGTON, Montgomery, PA

Built 1954 Load: 39.0 t ADT: 120,317

PA 33 N.B.(LR1098)

Fair

Over: NORFOLK SOUTHERN RR

0.5 MI N OF PA 191 EXIT, Northampton, PA

Built 1970 Load: 39.0 t ADT: 21,086

PA 33 SB(LR 1098)

Fair

Over: NORFOLK SOUTHERN RR

0.5 MI.N.PA.191 EXIT, Northampton, PA

Built 1970 Load: 39.0 t ADT: 19,407

PA 512(LR 752)

Fair

Over: TRIB. BUSHKILL CR.

2.5 MI.S.OF WIND GAP, Northampton, PA

Built 1953 Load: 39.0 t ADT: 9,399

SR 1033(LR48089SP)

Fair

Over: MARTINS CREEK

BANGOR BORO-PA.AVE., Northampton, PA

Built 1915 Load: 39.0 t ADT: 1,415

LITTLE CREEK ROAD

Fair

Over: LITTLE MARTINS CREEK

1.5 MILE WEST OF PA611, Northampton, PA

Built 1995 Load: 39.0 t ADT: 200

Showing 7,501-7,550 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.