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

T-369 (CTY BR #24)

Fair

Over: S. Branch Roaring Creek

4.5 MI SW OF CATAWISSA, Columbia, PA

Built 1986 Load: 36.3 t ADT: 220

SR 18 SPRINGBORO R

Fair

Over: OVER CEMETERY RUN

SPRING TOWNSHIP, Crawford, PA

Built 1939 Load: 36.3 t ADT: 1,472

SR 27 CENTRAL AV

Fair

Over: OVER OIL CREEK

CITY OF TITUSVILLE, Crawford, PA

Built 1949 Load: 36.3 t ADT: 3,475

T-602 BOCKMAN H.RD

Fair

Over: OVER GRAVEL RUN

1.3 MI.NW.SR 0086, Crawford, PA

Built 1996 Load: 36.3 t ADT: 250

CHESTNUT STREET

Fair

Over: OVER MILL RUN

CHESTNUT STREET MEADVILLE, Crawford, PA

Built 1906 Load: 36.3 t ADT: 2,500

PA 74; SR 0074

Fair

Over: TRIB TO CONODOGUINET CR

1 MI.N. OF CARLISLE, Cumberland, PA

Built 1963 Load: 36.3 t ADT: 3,216

I-81; SR 0081

Fair

Over: TWP RD (OLD SR 3003)TNBK

0.75 MI.S. OF EXIT 29, Cumberland, PA

Built 1963 Load: 36.3 t ADT: 19,859

I-81 SB; SR 0081

Fair

Over: TWP RD (OLD SR 3003)TNBK

0.75 MI.S. OF EXIT 29, Cumberland, PA

Built 1963 Load: 36.3 t ADT: 19,967

I-81 NB; SR 0081

Fair

Over: HANOVER ST; PA 34

I-81 OVER PA 34 EXIT 14, Cumberland, PA

Built 1962 Load: 36.3 t ADT: 27,794

I-81 NB; SR 0081

Fair

Over: US 11; SR 0011

I-81 NB OVER US 11, Cumberland, PA

Built 1963 Load: 36.3 t ADT: 29,146

I-81 SB; SR 0081

Fair

Over: US 11; SR 0011

I-81 SB OVER US 11, Cumberland, PA

Built 1963 Load: 36.3 t ADT: 28,424

PA 581

Fair

Over: 83SB 8113(Ramp to 581WB)

LEMOYNE BORO, Cumberland, PA

Built 1960 Load: 36.3 t ADT: 81,787

SR 2002; TWP RD

Fair

Over: I-81;SR 0081

1.4 MI.N.E. OF CARLISLE, Cumberland, PA

Built 1963 Load: 36.3 t ADT: 1,680

US 22 WB; SR 0022

Fair

Over: PAXTON CR & PARK TRAIL

INTER OF I81 & US22, Dauphin, PA

Built 1977 Load: 36.3 t ADT: 25,361

US 22; SR 0022

Fair

Over: ASYLUM RUN

(ARSENAL BLVD) HARRISBURG, Dauphin, PA

Built 1974 Load: 36.3 t ADT: 7,550

US 322; SR 0322

Fair

Over: SR 3001 I-283 RP.A&K

EISENHOWER INTERCHANGE, Dauphin, PA

Built 1970 Load: 36.3 t ADT: 17,681

SR 2015

Fair

Over: SWATARA CREEK

1 MI. N. HERSHEY, Dauphin, PA

Built 1961 Load: 36.3 t ADT: 2,405

BACK ROAD T551

Fair

Over: S.FORK OF POWELL CREEK

.4SW CRSNVLL/S.FRK.POWELL, Dauphin, PA

Built 1950 Load: 36.3 t ADT: 100

DEIBLERS GAP T-637

Fair

Over: MAHANTANGO CREEK

DEIBLERS GAP NEAR MALTA, Dauphin, PA

Built 1973 Load: 36.3 t ADT: 50

MULBERRY ST RAMP

Fair

Over: S 10TH ST PAXTON CREEK

PXTN C/S 10TH/MUL RMP/HBG, Dauphin, PA

Built 1910 Load: 36.3 t ADT: 2,000

SPROUL ROAD

Fair

Over: DARBY CREEK

1MI.N.W.CHESTER PK.25H04, Delaware, PA

Built 1967 Load: 36.3 t ADT: 6,083

MID-COUNTY EXWY.NB

Fair

Over: AVONDALE RD;DICKS RUN

1/3MI.N.VALLEY RD. 34G09, Delaware, PA

Built 1989 Load: 36.3 t ADT: 34,047

EAGLE/BURMONT ROAD

Fair

Over: DARBY CREEK

SPRGFLD TWP.LINE 26A11, Delaware, PA

Built 1928 Load: 36.3 t ADT: 8,712

FOURTH AVENUE

Fair

Over: STONY CREEK

.1MI.WEST PA-420 ADC 28C2, Delaware, PA

Built 1962 Load: 36.3 t ADT: 3,354

SR 120-PA 120

Fair

Over: MILL CREEK

DAGUSCAHONDA, Elk, PA

Built 1947 Load: 36.3 t ADT: 3,322

SR 2013

Fair

Over: TOBY CREEK

3 MI NE CHALLENGE, Elk, PA

Built 1952 Load: 36.3 t ADT: 60

SR 3001

Fair

Over: CLARION RIVER

BELLTOWN, Elk, PA

Built 1961 Load: 36.3 t ADT: 742

SR 3002

Fair

Over: SPRING CREEK

1 MI NW HALLTON, Elk, PA

Built 1901 Load: 36.3 t ADT: 86

T-364 (DAHOGA RD)

Fair

Over: HOFFMAN RUN

1000FT SW OF DAHOGA, Elk, PA

Built 1990 Load: 36.3 t ADT: 134

SR 20 E.BUFFALO RD

Fair

Over: OVER SIXTEEN MILE CREEK

NORTH EAST TOWNSHIP, Erie, PA

Built 1941 Load: 36.3 t ADT: 8,098

T-442 MILLFAIR

Fair

Over: OVER SR 90 EB/WB

MCKEAN TOWNSHIP, Erie, PA

Built 1959 Load: 36.3 t ADT: 1,076

SR 90 EB

Fair

Over: OVER SR 97 UNION CITY RD

SUMMIT TOWNSHIP, Erie, PA

Built 1959 Load: 36.3 t ADT: 20,606

T-729 CLARK ROAD

Fair

Over: OVER SR 90 EB/WB

HARBOR CREEK TOWNSHIP, Erie, PA

Built 1959 Load: 36.3 t ADT: 491

SR 99 ERIE STREET

Fair

Over: OVER T-481 STANCLIFF RD

MCKEAN TOWNSHIP, Erie, PA

Built 1968 Load: 36.3 t ADT: 5,846

SR 3025 CONNEAUTEE

Fair

Over: OVER LT CONNEAUTTEE CK

WASHINGTON TOWNSHIP, Erie, PA

Built 1956 Load: 36.3 t ADT: 528

T-415 MOORE ROAD

Fair

Over: LE BOEUF CREEK

500 EAST OF SR 19, Erie, PA

Built 1975 Load: 36.3 t ADT: 133

SR 0281

Fair

Over: HALL RUN

HENRY CLAY TOWNSHIP, Fayette, PA

Built 1951 Load: 36.3 t ADT: 1,450

SR 1009

Fair

Over: POPLAR RUN

SPRINGFIELD TOWNSHIP, Fayette, PA

Built 1948 Load: 36.3 t ADT: 773

SR 1025

Fair

Over: MOUNTS CREEK

BULLSKIN TOWNSHIP, Fayette, PA

Built 1949 Load: 36.3 t ADT: 535

SR 1034

Fair

Over: BREAKNECK RUN

BULLSKIN TOWNSHIP, Fayette, PA

Built 1956 Load: 36.3 t ADT: 665

SR 1042

Fair

Over: JACOBS CREEK

UPPER TYRONE TOWNSHIP, Fayette, PA

Built 1971 Load: 36.3 t ADT: 2,437

SR 1048

Fair

Over: MOUNTS CREEK

BULLSKIN TOWNSHIP, Fayette, PA

Built 1954 Load: 36.3 t ADT: 274

SR 3005

Fair

Over: GRASSY RUN

SPRINGHILL TOWNSHIP, Fayette, PA

Built 1922 Load: 36.3 t ADT: 225

SR 4020

Fair

Over: DUNLAP CREEK

REDSTONE & LUZERNE TWPS., Fayette, PA

Built 1952 Load: 36.3 t ADT: 822

BROWNFIELD RD T620

Fair

Over: REDSTONE CREEK

SOUTH OF HATFIELD, Fayette, PA

Built 1978 Load: 36.3 t ADT: 1,100

PA 75; Path Valley

Fair

Over: TRIB OF DRY RUN

DRY RUN, Franklin, PA

Built 1953 Load: 36.3 t ADT: 1,434

PA 997; SR 0997

Fair

Over: NORFOLK SOUTHERN RR

SCOTLAND BYPASS, Franklin, PA

Built 1970 Load: 36.3 t ADT: 8,469

AMSTERDAM ROA

Fair

Over: RED RUN CREEK

.5SW ROUZERVLLE/RED RUN, Franklin, PA

Built 1964 Load: 36.3 t ADT: 250

SR 1002

Fair

Over: SPRING RUN

1.25 MI.W.OF CITO, Fulton, PA

Built 1953 Load: 36.3 t ADT: 158

SR 1007

Fair

Over: LICKING CREEK

1 MI.W.OF KNOBSVILLE, Fulton, PA

Built 1941 Load: 36.3 t ADT: 285

Showing 6,501-6,550 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.