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

SR4017

Fair

Over: LITTLE TIONESTA CREEK

WOLFS CORNERS, Clarion, PA

Built 1957 Load: 27.2 t ADT: 215

T-472 HUBER RD

Fair

Over: LEATHERWOOD CREEK

0.3 mi E int w/ SR 2007, Clarion, PA

Built 1950 Load: 27.2 t ADT: 50

SR 220-US 220

Fair

Over: T-373

1 MILE EAST MILL HALL, Clinton, PA

Built 1976 Load: 27.2 t ADT: 8,091

ON TSR 579

Fair

Over: YOUNG WOMANS CREEK

2 MILE NORTH GLEASONTON, Clinton, PA

Built 1973 Load: 27.2 t ADT: 83

ON TSR 579

Fair

Over: YOUNG WOMANS CREEK

5 MILE NORTH GLEASONTON, Clinton, PA

Built 1973 Load: 27.2 t ADT: 83

T-352

Fair

Over: FISHING CREEK

2.4 MI. EAST OF LOGANTON, Clinton, PA

Built 1975 Load: 27.2 t ADT: 150

SR 0080 EBL

Fair

Over: OVER S.R. 11 SBL

2.5 MILES W OF BERWICK, Columbia, PA

Built 1964 Load: 27.2 t ADT: 12,623

T-456 CTY BR.#116

Fair

Over: GREEN CREEK

.5 MI. S. ROHRSBURG, Columbia, PA

Built 1958 Load: 27.2 t ADT: 75

SR 89 CHURCH RUN

Fair

Over: OVER HUMMER CREEK

OIL CREEK TOWNSHIP, Crawford, PA

Built 1950 Load: 27.2 t ADT: 827

SR 99 FOREST ST.

Fair

Over: OVER CONNEAUT CREEK

CAMBRIDGE TOWNSHIP, Crawford, PA

Built 1930 Load: 27.2 t ADT: 2,499

SR 1006 SKELTOWN

Fair

Over: OVER CONNEAUTTEE CREEK

CAMBRIDGE TOWNSHIP, Crawford, PA

Built 1959 Load: 27.2 t ADT: 1,150

T-724 CASTILE ROAD

Fair

Over: OVER WOODCOCK CREEK

4.5 MI. N. GUYS MILLS, Crawford, PA

Built 1930 Load: 27.2 t ADT: 250

I-81 NB; SR 0081

Fair

Over: ALEXANDERS SPRING CREEK

3 MI.S. OF CARLISLE, Cumberland, PA

Built 1963 Load: 27.2 t ADT: 20,565

SR 4029; T-505

Fair

Over: CONODOGUINET CREEK

.5 MI. N. OF CARLISLE, Cumberland, PA

Built 1954 Load: 27.2 t ADT: 2,676

HAYS BRIDGE RD.

Fair

Over: CONODOGUINET CREEK

3W CRLSLE/.2N PTC/CONOD., Cumberland, PA

Built 1962 Load: 27.2 t ADT: 587

PA 283; SR 0300

Fair

Over: PA 341; SR 0341

2 MI. E. OF MIDDLETOWN, Dauphin, PA

Built 1969 Load: 27.2 t ADT: 21,923

PA 283 EB; SR 0300

Fair

Over: TWP.RD.564; MILL RD.

5.5 MI. E. OF MIDDLETOWN, Dauphin, PA

Built 1968 Load: 27.2 t ADT: 21,988

PA 283 WB; SR 0300

Fair

Over: TWP RD 564

5 MI E. MIDDLETOWN, Dauphin, PA

Built 1968 Load: 27.2 t ADT: 23,485

HERSHEY ROAD T-454

Fair

Over: ARMSTRONG CREEK

YEAGER/2.3NE HLFX/ARMSTRG, Dauphin, PA

Built 1977 Load: 27.2 t ADT: 100

SR 8015 RAMP B

Fair

Over: SR 8015 RP C; FRONT ST.

SOUTH HARRISBURG, Dauphin, PA

Built 1982 Load: 27.2 t ADT: 17,105

INTERSTATE 95 (SB)

Fair

Over: NAAMANS CREEK ROAD

.2MI.N.DELAWARE LN.42D10, Delaware, PA

Built 1967 Load: 27.2 t ADT: 54,189

STATE ROAD

Fair

Over: COBBS CREEK

.5MI.EAST PA-3 27A10, Delaware, PA

Built 1935 Load: 27.2 t ADT: 9,752

SR 120-PA 120

Fair

Over: ELK CREEK

3 MILES EAST OF RIDGWAY, Elk, PA

Built 1948 Load: 27.2 t ADT: 3,322

SR 255-PA 255

Fair

Over: POWERS RUN

1 MI E JOHNSONBURG, Elk, PA

Built 1931 Load: 27.2 t ADT: 4,062

SR 20 E MAIN ST

Fair

Over: OVER TWENTY MILE CREEK

NORTH EAST TOWNSHIP, Erie, PA

Built 1973 Load: 27.2 t ADT: 2,570

PA 89 BEAVER DAM R

Fair

Over: OVER FRENCH CREEK BRANCH

GREENFIELD TOWNSHIP, Erie, PA

Built 1940 Load: 27.2 t ADT: 1,779

SR 2019 BOW HILL

Fair

Over: OVER LILLEY RUN

CONCORD TOWNSHIP, Erie, PA

Built 1965 Load: 27.2 t ADT: 369

SR 0079 RAMP C

Fair

Over: OVER ELK CREEK

MCKEAN TOWNSHIP, Erie, PA

Built 1969 Load: 27.2 t ADT: 1,027

SR 0040

Fair

Over: SR 8005

SOUTH UNION TOWNSHIP, Fayette, PA

Built 1971 Load: 27.2 t ADT: 18,160

SR 0040

Fair

Over: SR 0043

SOUTH UNION TOWNSHIP, Fayette, PA

Built 1972 Load: 27.2 t ADT: 5,601

SR 1053

Fair

Over: GIST RUN

DUNBAR TOWNSHIP, Fayette, PA

Built 1940 Load: 27.2 t ADT: 2,324

SR 3011

Fair

Over: JACOBS CREEK

NICHOLSON TOWNSHIP, Fayette, PA

Built 1940 Load: 27.2 t ADT: 184

SR 4017

Fair

Over: WASHINGTON RUN

PERRYOPOLIS BOROUGH, Fayette, PA

Built 1940 Load: 27.2 t ADT: 423

SR 2040; US 40 BUS

Fair

Over: REDSTONE CREEK

CITY OF UNIONTOWN, Fayette, PA

Built 1940 Load: 27.2 t ADT: 8,291

STANTON ROAD T-727

Fair

Over: BACK CREEK

700 FROM SR1054 INTERSEC, Fayette, PA

Built 1980 Load: 27.2 t ADT: 100

SR 666 D ZEIS HWY

Fair

Over: OVER MINISTER CREEK

HOWE TOWNSHIP, Forest, PA

Built 1936 Load: 27.2 t ADT: 139

I-81 NB; SR 0081

Fair

Over: PA 16; SR 0016

E.OF GREENCASTLE, Franklin, PA

Built 1963 Load: 27.2 t ADT: 22,001

I-81 SB; SR 0081

Fair

Over: PA 16; SR 0016

E. OF GREENCASTLE, Franklin, PA

Built 1963 Load: 27.2 t ADT: 23,264

T-437; ZARGER RD

Fair

Over: I-81; SR 0081

2.5 MI.N.OF GREENCASTLE, Franklin, PA

Built 1963 Load: 27.2 t ADT: 588

T-452; LIGHTHSE RD

Fair

Over: I-81 SR 0081

1.5 ML. N. OF MARION, Franklin, PA

Built 1963 Load: 27.2 t ADT: 107

PA 316; Wayne Hwy.

Fair

Over: LITTLE ANTIETAM CREEK

1.5 MI.N. WAYNESBORO, Franklin, PA

Built 1929 Load: 27.2 t ADT: 5,980

SR 3004;Bino Rd.

Fair

Over: Conococheague Creek

0.75 MI.N.E. OF BINO, Franklin, PA

Built 1949 Load: 27.2 t ADT: 437

SR 3013

Fair

Over: BRANCH OF PURSLEY CREEK

CENTER TOWNSHIP, Greene, PA

Built 1929 Load: 27.2 t ADT: 351

TOWNSHIP ROAD 309

Fair

Over: CLAWSON RUN CREEK

SOUTH OF SHAMROCK, Greene, PA

Built 1919 Load: 27.2 t ADT: 150

US 22(POBSTOR)

Fair

Over: US SILICA QUARRY ROAD

0.1 MILE EAST OF TR 655S, Huntingdon, PA

Built 1972 Load: 27.2 t ADT: 10,004

T-511 FRANKLIN RD

Fair

Over: LITTLE MAHONING CREEK

BTW T830 & SR4020, Indiana, PA

Built 1976 Load: 27.2 t ADT: 100

SR3001

Fair

Over: PINE RUN

DORA, Jefferson, PA

Built 1934 Load: 27.2 t ADT: 116

SR 22-US 22

Fair

Over: TOWNSHIP ROAD 554

1 MI SE THOMPSONTOWN, Juniata, PA

Built 1972 Load: 27.2 t ADT: 9,602

SR 0011 TR 11

Fair

Over: SPRING BROOK

MOOSIC BORO .1 M S TR 502, Lackawanna, PA

Built 1959 Load: 27.2 t ADT: 10,714

SR 438 LAPLUME RD

Fair

Over: ACKERLY CREEK

LAPLUME TWP 119 E TR 6, Lackawanna, PA

Built 1952 Load: 27.2 t ADT: 744

Showing 2,001-2,050 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.