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 2014

Fair

Over: WOLF RUN

2 MI N OF MUNCY BOROUGH, Lycoming, PA

Built 1938 Load: 32.7 t ADT: 6,920

SR 2015

Fair

Over: GERMAN RUN

1.5 MI S OF LAIRDSVILLE, Lycoming, PA

Built 1949 Load: 32.7 t ADT: 313

SR-2018

Fair

Over: BR OF MILLERS RUN

0.1M E INTERSECT LR 41045, Lycoming, PA

Built 1956 Load: 32.7 t ADT: 3,500

SR 2023

Fair

Over: MILL CREEK

VILLAGE OF BALLS MILLS, Lycoming, PA

Built 1960 Load: 32.7 t ADT: 1,108

S.R.2073

Fair

Over: OVER GREGGS RUN

2MI.NE OF HUGHSVILLE, Lycoming, PA

Built 1927 Load: 32.7 t ADT: 782

SR 3013

Fair

Over: OVER QUENSHUKENY RUN

4 MI E OF SALLADASBURG, Lycoming, PA

Built 1962 Load: 32.7 t ADT: 476

SR 4005

Fair

Over: OVER WOLF RUN

1 MI W OF COGAN HOUSE, Lycoming, PA

Built 1929 Load: 32.7 t ADT: 31

T-801

Fair

Over: BLACK HOLE CREEK

.5 MI. N. END MONTGOMERY, Lycoming, PA

Built 1972 Load: 32.7 t ADT: 200

T-537

Fair

Over: LITTLE MUNCY CREEK

1.8 MI. N. OF UNITYVILLE, Lycoming, PA

Built 1920 Load: 32.7 t ADT: 40

T-471

Fair

Over: MCCLURES RUN

100 FT E WMPT CITY LINE, Lycoming, PA

Built 1978 Load: 32.7 t ADT: 500

T-860 CTY BDG 107

Fair

Over: LYCOMING CREEK

VILLAGE OF ROARING BRANCH, Lycoming, PA

Built 1900 Load: 32.7 t ADT: 75

T-811

Fair

Over: WOLF RUN

1.2 MI. NW OF MUNCY BORO, Lycoming, PA

Built 1960 Load: 32.7 t ADT: 320

T-397

Fair

Over: WHITE DEER HOLE CREEK

0.7 MI SW OF ELIMSPORT, Lycoming, PA

Built 1976 Load: 32.7 t ADT: 108

T-465

Fair

Over: SPRING CREEK

2.5 MI. EAST OF ELIMSPORT, Lycoming, PA

Built 1985 Load: 32.7 t ADT: 100

EDGEWOOD AVENUE

Fair

Over: MOSQUITO CREEK

DUBOISTOWN BOROUGH, Lycoming, PA

Built 1930 Load: 32.7 t ADT: 51

WEST HOUSTON AVE.

Fair

Over: BLACK HOLE CREEK

MONTGOMERY BORO, Lycoming, PA

Built 1954 Load: 32.7 t ADT: 216

CARPENTER ST;MUNCY

Fair

Over: GLADE RUN

CARPENTER ST. MUNCY BORO, Lycoming, PA

Built 1920 Load: 32.7 t ADT: 504

GREEN STREET

Fair

Over: GLADE RUN

GREEN STREET; MUNCY BORO, Lycoming, PA

Built 1920 Load: 32.7 t ADT: 378

E MECHANIC STREET

Fair

Over: GLADE RUN

E MECHANIC ST., Lycoming, PA

Built 1938 Load: 32.7 t ADT: 300

E. CENTRAL AVE

Fair

Over: HAGERMANS RUN

SOUTH WILLIAMSPORT BORO, Lycoming, PA

Built 1920 Load: 32.7 t ADT: 500

SR 346-PA 346

Fair

Over: WILLOW CREEK

12 MI W BRADFORD, McKean, PA

Built 1968 Load: 32.7 t ADT: 520

SR 546-PA 546

Fair

Over: KNAPP CREEK

DUKE CENTER, McKean, PA

Built 1970 Load: 32.7 t ADT: 443

ON MAIN STREET

Fair

Over: E BR TUNUNGWANT CREEK

CITY OF BRADFORD, McKean, PA

Built 1960 Load: 32.7 t ADT: 5,257

SR 18 CONNEAUT LK.

Fair

Over: OVER LITTLE SHENANGO R

SUGAR GROVE TOWNSHIP, Mercer, PA

Built 1984 Load: 32.7 t ADT: 2,100

SR 80 WB

Fair

Over: OVER SR 3007 MRCR-PLSKI

EAST LACKAWANNOCK TWP., Mercer, PA

Built 1965 Load: 32.7 t ADT: 11,377

SR 358 HADLEY RDAD

Fair

Over: OVER LITTLE SHENANGO TR

PERRY TOWNSHIP, Mercer, PA

Built 1984 Load: 32.7 t ADT: 2,452

SR 965 KILGORE RD.

Fair

Over: OVER SANDY CREEK

WORTH TOWNSHIP, Mercer, PA

Built 1965 Load: 32.7 t ADT: 950

SR 2022 MILLBROOK

Fair

Over: OVER WOLF CREEK BRANCH

WORTH TOWNSHIP, Mercer, PA

Built 1976 Load: 32.7 t ADT: 139

SR 3019 ORANGEVILL

Fair

Over: OVER TOWEL WORKS RUN

CITY OF HERMITAGE, Mercer, PA

Built 1957 Load: 32.7 t ADT: 380

SR 3035 DUTCH LANE

Fair

Over: OVER PINE HOLLOW RUN

MUNICIPALITY OF HERMITAGE, Mercer, PA

Built 1973 Load: 32.7 t ADT: 4,581

SR 4014 ONIONTOWN

Fair

Over: OVER SHENANGO RIVER

DELAWARE TOWNSHIP, Mercer, PA

Built 1968 Load: 32.7 t ADT: 1,005

SR 4019 METHODIST

Fair

Over: OVER BLUFF RUN

SALEM TOWNSHIP, Mercer, PA

Built 1962 Load: 32.7 t ADT: 397

BRIDGE 602 T-897

Fair

Over: OVER POWDER MILL CREEK

HOLIBAUGH RD FRENCH CREEK, Mercer, PA

Built 1977 Load: 32.7 t ADT: 32

BRIDGE 817 T-470

Fair

Over: OVER MATHAY RUN

HAMBURG RD HEMPFIELD TWP., Mercer, PA

Built 1963 Load: 32.7 t ADT: 3,449

BRIDGE 1110 T-738

Fair

Over: OVER PINE RUN

CAREY RD. NEW VERNON TWP., Mercer, PA

Built 1958 Load: 32.7 t ADT: 32

BRIDGE 1714 T-647

Fair

Over: OVER BUTCHERY CREEK

TRIPLE LINK SANDY LAKE, Mercer, PA

Built 1974 Load: 32.7 t ADT: 89

BRIDGE 2813 T-412

Fair

Over: OVER HOG BACK RUN

LONGVIEW RD SHENANGO TWP., Mercer, PA

Built 1966 Load: 32.7 t ADT: 827

SR 322-US 322

Fair

Over: BUCK RUN

1 MI W BURNHAM, Mifflin, PA

Built 1964 Load: 32.7 t ADT: 25,278

SR 22-US 22

Fair

Over: BRANCH KISHACOQUILLAS CR

1 MI N LEWISTOWN, Mifflin, PA

Built 1958 Load: 32.7 t ADT: 34,599

SR 655-PA 655

Fair

Over: KISHACOQUILLAS CREEK

1 MI S MENNO, Mifflin, PA

Built 1969 Load: 32.7 t ADT: 2,277

SR 1002

Fair

Over: DRY CREEK

3 MI NE REEDSVILLE, Mifflin, PA

Built 1919 Load: 32.7 t ADT: 1,021

ON TSR 821

Fair

Over: LAUREL CREEK

MILROY, Mifflin, PA

Built 1968 Load: 32.7 t ADT: 2,133

ON WALNUT STREET

Fair

Over: HUNGRY RUN

BURNHAM BORO, Mifflin, PA

Built 1912 Load: 32.7 t ADT: 2,167

T-448 HAVICE VALLE

Fair

Over: HAVICE CREEK

600 FT E OF T 473, Mifflin, PA

Built 1991 Load: 32.7 t ADT: 212

T-471 TREASTER VAL

Fair

Over: HAVICE CREEK

400 FT EAST OF T-473, Mifflin, PA

Built 1991 Load: 32.7 t ADT: 300

T-392

Fair

Over: COFFEE RUN

800FT NORTH OF SR 0655, Mifflin, PA

Built 1970 Load: 32.7 t ADT: 300

T-335 NORTH RIVER

Fair

Over: MINEHART RUN

0.4 MILES W OF T-708, Mifflin, PA

Built 1993 Load: 32.7 t ADT: 182

I-80 EB(LR 1009)

Fair

Over: T-580 (STONEY HOLLOW RD)

4.5 MI.E.OF CARBON CO.LN., Monroe, PA

Built 1965 Load: 32.7 t ADT: 9,993

I-80WB(LR1002)

Fair

Over: TWP RD 481*(STADDEN RD.)

2.6 MI.W.OF PA 33, Monroe, PA

Built 1963 Load: 32.7 t ADT: 23,961

I-380 SB(LR 1002)

Fair

Over: SR 4004 (LR 45024)

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

Built 1964 Load: 32.7 t ADT: 11,547

Showing 4,651-4,700 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.