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-346

Poor

Over: KINGS CREEK

1 MI. WEST OF ESTELLA, Sullivan, PA

Built 1925 Load: 9.1 t ADT: 50

OLD ROUSEVILLE RD.

Poor

Over: CHERRY RUN

SW OF PLUMER, Venango, PA

Built 1915 Load: 9.1 t ADT: 25

T-388 MILES RUN RD

Poor

Over: MILES RUN

PITTSFIELD TOWNSHIP, Warren, PA

Built 1950 Load: 9.1 t ADT: 85

PLANTS BRIDGE T408

Poor

Over: TEMPLETON FORK

100 EAST OF TR 414, Washington, PA

Built 1887 Load: 9.1 t ADT: 40

BUCKLEY LANE T-689

Poor

Over: BEAVER DAM CREEK

DAMASCUS TWP 350FT SR1013, Wayne, PA

Built 1910 Load: 9.1 t ADT: 10

T405 Hoods Mill Rd

Poor

Over: TRIB FOURMILE RUN

BTW SR130 & T499, Westmoreland, PA

Built 1975 Load: 9.1 t ADT: 100

T-880 DONEGAL LAKE

Poor

Over: FOUR MILE RUN

1/4 MI NW OF SR 711, Westmoreland, PA

Built 1920 Load: 9.1 t ADT: 150

DIETZ MOUNTAIN RD

Poor

Over: LEONARD CREEK

0.5 MI NW OF BEAUMONT, Wyoming, PA

Built 1914 Load: 9.1 t ADT: 100

HULL DRIVE

Poor

Over: BERMUDIAN CREEK

.6S KRALLTWN/BERMUDIAN CR, York, PA

Built 1896 Load: 9.1 t ADT: 103

Valley Green Road

Poor

Over: Wissahickon Creek

WISSAHICKON CREEK 16H06, Philadelphia, PA

Built 1915 Load: 9.1 t ADT: 100

T-449

Poor

Over: LOCUST CREEK

T449/T454 INTERSECTION, Cumberland, PA

Built 1989 Load: 9.1 t ADT: 100

T741 Old Route 422

Poor

Over: TRIB SLIPPERY ROCK CREEK

275 NORTH OF SR 422, Lawrence, PA

Built 1921 Load: 9.1 t ADT: 300

OLD MAIN STREET

Poor

Over: KEYSER CREEK

0.4 MILES S SR 3012, Lackawanna, PA

Built 1910 Load: 9.1 t ADT: 100

CALERA ST

Poor

Over: STREETS RUN CREEK

014 Calera St Bridge No.1, Allegheny, PA

Built 1931 Load: 10.0 t ADT: 125

T435 Blue Hole Rd

Poor

Over: CLOVER CREEK

1.5 MI.SE.OF WILLIAMSBURG, Blair, PA

Built 1915 Load: 10.0 t ADT: 67

HEADQUARTERS ROAD

Poor

Over: TINICUM CREEK

AT RED HILL ROAD 10K09, Bucks, PA

Built 1919 Load: 10.0 t ADT: 322

SONMAN AVENUE

Poor

Over: TROUT RUN

PORTAGE SONMAN AVENUE, Cambria, PA

Built 1924 Load: 10.0 t ADT: 461

T-524 BROWN RD

Poor

Over: ELK CREEK

1900 FT SOUTH OF SR 192, Centre, PA

Built 1940 Load: 10.0 t ADT: 20

NORTH REEDS ROAD

Poor

Over: E BR BRANDYWINE CREEK

250 N of PA 282 3471-C2, Chester, PA

Built 1939 Load: 10.0 t ADT: 1,146

SKELP LEVEL ROAD

Poor

Over: NSRC (TRACK REMOVED)

1200 S LR15095 3581-K1, Chester, PA

Built 1927 Load: 10.0 t ADT: 750

T-203 BILGER ROCKS

Poor

Over: BILGER RUN

2.2 MI EAST OF SR 219, Clearfield, PA

Built 1930 Load: 10.0 t ADT: 30

T-206

Poor

Over: ANDERSON CREEK

1000 FT E OF SR 879, Clearfield, PA

Built 1930 Load: 10.0 t

T-317 CNTY BR#29

Poor

Over: MUGSER RUN

3.5 MI. SW OF NUMIDIA, Columbia, PA

Built 1921 Load: 10.0 t ADT: 50

T-883 JOINER ROAD

Poor

Over: OVER CONNEAUT CREEK W.BR

4.7 MI. N.W. BEAVER CNTR., Crawford, PA

Built 1935 Load: 10.0 t ADT: 250

CLINTON COURT

Poor

Over: OVER MILL RUN

CLINTON COURT MEADVILLE, Crawford, PA

Built 1902 Load: 10.0 t ADT: 1,500

SR 4013

Poor

Over: RATTLING CREEK

LYKENS BORO, Dauphin, PA

Built 1973 Load: 10.0 t ADT: 341

SR 1019

Poor

Over: BREAKNECK RUN

BULLSKIN TOWNSHIP, Fayette, PA

Built 1938 Load: 10.0 t ADT: 386

T-748 FALLS AVENUE

Poor

Over: OPOSSUM RUN

AT INDEPENDENCE AVE INTER, Fayette, PA

Built 1930 Load: 10.0 t ADT: 500

SR 3006

Poor

Over: GARDNER CREEK

NEWTON TWP .6 M E SR 3001, Lackawanna, PA

Built 1958 Load: 10.0 t ADT: 232

SR 3040; TWP RD

Poor

Over: BEAVER CREEK

.75 MI SW OF REFTON, Lancaster, PA

Built 1962 Load: 10.0 t ADT: 647

T-451 LAMPARTER RD

Poor

Over: MEETINGHOUSE CREEK

1/2 MILE S OF SR 372, Lancaster, PA

Built 1948 Load: 10.0 t ADT: 245

BAIRD RD (T-505)

Poor

Over: COFFEE RUN TRIBUTARY

1.9 MI W/SR 0422, Lawrence, PA

Built 1967 Load: 10.0 t ADT: 200

SMITH LANE

Poor

Over: LITTLE LEHIGH CREEK

NW OF ALBURTIS, Lehigh, PA

Built 1970 Load: 10.0 t ADT: 50

T-389 SARTWELL RD

Poor

Over: NEWELL CREEK

AT NEWELL CREEK RD, McKean, PA

Built 1982 Load: 10.0 t ADT: 280

SR 3004(LR 45004)

Poor

Over: Princess Run

E. OF KUNKLETOWN, Monroe, PA

Built 1937 Load: 10.0 t ADT: 1,646

FRANKLIN STREET

Poor

Over: NORFOLK SOUTHERN (HSB)

325 S of High St 3138-G2, Montgomery, PA

Built 1920 Load: 10.0 t ADT: 750

T-630 DELAWARE TWP

Poor

Over: DELAWARE RUN

DELAWARE TOWNSHIP DEWART, Northumberland, PA

Built 1973 Load: 10.0 t ADT: 150

T-305 E SUGAR MTN

Poor

Over: LITTLE BUSHKILL CREEK

AT SR 2001 INTERSECT, Pike, PA

Built 1956 Load: 10.0 t ADT: 300

T-302 S. WOODS RD

Poor

Over: FIRST FORK SINNEMAHONING

0.2 MI FROM SR 3003, Potter, PA

Built 1950 Load: 10.0 t ADT: 60

COVERED BRIDGE RD

Poor

Over: LOWER LITTLE SWATARA CR

0.1 MI SOUTH OF SR 895, Schuylkill, PA

Built 1860 Load: 10.0 t ADT: 50

W.BEAVER TWP T467

Poor

Over: ULSH GAP RUN

2 MI.SW.OF MIDDLE CREEK, Snyder, PA

Built 1925 Load: 10.0 t ADT: 50

T548 (PODUNK ROAD)

Poor

Over: BUTLER CREEK

3 MILES SE. OF HARFORD, Susquehanna, PA

Built 1920 Load: 10.0 t ADT: 50

SR 1039

Poor

Over: CHARTIERS CREEK

N. STRABANE & CHARTIERS, Washington, PA

Built 1942 Load: 10.0 t ADT: 1,931

SR 3011 UBAN ROAD

Poor

Over: WEST BR WALLENPAUPACK CR

STERLING TP .4M S SR 3005, Wayne, PA

Built 1958 Load: 10.0 t ADT: 373

SPRY ROAD

Poor

Over: CARLEY BROOK

2000 NORTH OF SR 1001, Wayne, PA

Built 1956 Load: 10.0 t ADT: 100

T-887 SEGER RD

Poor

Over: MCGEE RUN

1/2 MI NW OF SR 217, Westmoreland, PA

Built 1980 Load: 10.0 t ADT: 500

T395

Poor

Over: Small Creek

Near Greensboro, Greene, PA

Built 1919 Load: 10.0 t ADT: 35

DOTTERER ROAD

Poor

Over: TRIB. TO ALLEGHENY RIVER

ROCKLAND TWP, Venango, PA

Built 1959 Load: 10.0 t ADT: 100

T-821 (OLD RT 11)

Poor

Over: NORFOLK SOUTHERN RR

T-821 OVER NS Railroad, Susquehanna, PA

Built 1914 Load: 10.0 t ADT: 400

N-PARK ICE RINK RD

Poor

Over: PINE CREEK NORTH FORK

PN09 PINE CREEK N FK #9, Allegheny, PA

Built 1965 Load: 10.9 t ADT: 192

Showing 20,801-20,850 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.