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

RAMP J(76)TO 676EB

Fair

Over: SCHUYLKILL RIVER BANK

NR.VINE ST.INCH. 3590A08, Philadelphia, PA

Built 1956 Load: 46.3 t ADT: 16,176

SR 0218

Fair

Over: ROBERTS RUN

WAYNE TOWNSHIP, Greene, PA

Built 1997 Load: 46.3 t ADT: 1,458

W. UNION BLVD.

Fair

Over: MONOCACY CREEK

EAST OF PA 378 BETHLEHEM, Lehigh, PA

Built 1997 Load: 46.3 t ADT: 21,872

BRIDGE 1904 T-555

Fair

Over: OVER LACKAWANNOCK CREEK

FULLINGMILL RD. JEFFERSON, Mercer, PA

Built 1998 Load: 46.3 t ADT: 602

SR1014

Fair

Over: N BR OF TWO LICK CR

WANDIN NO.1, Indiana, PA

Built 1998 Load: 46.3 t ADT: 169

EAST PROSPECT AV

Fair

Over: PAT WEST BUSWAY

P50011 50 E/INGRAM AVE, Allegheny, PA

Built 1997 Load: 46.3 t ADT: 4,000

US 219 NBL

Fair

Over: ACCESS RD & CASSELMAN R

1.5 MI. N OF MEYERSDALE, Somerset, PA

Built 1998 Load: 46.3 t ADT: 1,861

US 219 SBL

Fair

Over: ACCESS RD & CASSELMAN R

1 MI.N OF MEYERSDALE, Somerset, PA

Built 1998 Load: 46.3 t ADT: 1,896

TOWNSHIP ROAD 724

Fair

Over: TUSTIN RUN

VILLAGE OF KUHNTOWN, Greene, PA

Built 1998 Load: 46.3 t ADT: 100

TANGLEWOOD ROAD

Fair

Over: DEER CREEK TRIBUTARY

209004 NORTH / RT 208 INT, Lawrence, PA

Built 1998 Load: 46.3 t ADT: 100

SR 0188

Fair

Over: Norfolk Southern Railway

MORGAN TOWNSHIP, Greene, PA

Built 2000 Load: 46.3 t ADT: 5,422

KEITH VALLEY ROAD

Fair

Over: TRIBUTARY PARK CREEK

.4 Mi NE PA-463 3146-C7, Montgomery, PA

Built 1950 Load: 46.3 t ADT: 6,550

T-649 SWOPE VAL.RD

Fair

Over: SWOPE VALLEY RUN

W.OF SR 645 S.OF SR 443, Schuylkill, PA

Built 2001 Load: 46.3 t ADT: 2,000

SR 322-US 322

Fair

Over: SR 3005

3 MI N STATE COLLEGE, Centre, PA

Built 2001 Load: 46.3 t ADT: 15,930

SR 99-I 99

Fair

Over: SR 8015 RAMP E

0.5 MI N OF STATE COLLEGE, Centre, PA

Built 2002 Load: 46.3 t ADT: 13,842

T391 HESS BENEDICT

Fair

Over: W BR LITTLE ANTIETAM CRK

500 FT WEST OF SR 997, Franklin, PA

Built 2002 Load: 46.3 t ADT: 300

T406 58TH STREET

Fair

Over: BURGOON RUN

2 MI SW OF ALTOONA, Blair, PA

Built 2003 Load: 46.3 t ADT: 532

N MAIN ST (SR1015)

Fair

Over: OVER JOHNNY RUN

PINE GROVE TOWNSHIP, Warren, PA

Built 2002 Load: 46.3 t ADT: 700

I-81SB RP FROM CNT

Fair

Over: I-81SB RAMP TO WEL CENTR

0.1M NORTH OF TR 11, Susquehanna, PA

Built 2001 Load: 46.3 t ADT: 54

QUARRY ROAD

Fair

Over: WEST BR. SKIPPACK CREEK

N SKIPPACK 3142J01, Montgomery, PA

Built 2005 Load: 46.3 t ADT: 638

SOUTHWIND LN

Fair

Over: CONRAIL (TRACK REMOVED)

SOUTHWIND LN 3472-B10, Chester, PA

Built 2001 Load: 46.3 t ADT: 800

BLUE FALLS ROAD

Fair

Over: TR.CONNEAUT CK.

1.4 MI E.CONNEAUTVILLE, Crawford, PA

Built 1996 Load: 46.3 t ADT: 50

McCartney Hollow R

Fair

Over: Trib to Slippery Rock Cr

McCarney Hollow Rd, Lawrence, PA

Built 1910 Load: 46.3 t ADT: 103

T-315

Fair

Over: W BR SUSQUEHANNA RIVER

90FT W OF SR 219 INTER, Clearfield, PA

Built 2009 Load: 46.3 t ADT: 134

PA TPK (I-576)

Fair

Over: SR 4004

ROBINSON TWP, Washington, PA

Built 2006 Load: 46.3 t ADT: 2,025

MAIN PARK ROAD

Fair

Over: S BR LITTLE AUGHWICK CRK

COWANS GAP STATE PARK, Fulton, PA

Built 2009 Load: 46.3 t ADT: 100

T393 LYNN CEMETERY

Fair

Over: WHITE CREEK

2.2 MI. SW OF SPRINGVILLE, Susquehanna, PA

Built 2009 Load: 46.3 t ADT: 50

2045 Monterey Rd

Fair

Over: Muddy Run

1 mi. N. of Bird In Hand, Lancaster, PA

Built 2010 Load: 46.3 t ADT: 1,900

T-340

Fair

Over: KISHACOQUILLAS CREEK

3300FT S INTER T340-SR655, Mifflin, PA

Built 2010 Load: 46.3 t ADT: 100

West Avondale Road

Fair

Over: W. Br White Clay Creek

1 Mi NE PA-896 3909-C4, Chester, PA

Built 2012 Load: 46.3 t ADT: 100

Bowman Avenue

Fair

Over: East Branch Indian Creek

.4 Mi NE US-30 3588-H1, Montgomery, PA

Built 1948 Load: 46.3 t ADT: 500

CONSTITUTION DRIVE

Fair

Over: TRIB TO CHRISTMAN LAKE

WEST OF CHRISTMAN LAKE, Berks, PA

Built 1995 Load: 46.3 t ADT: 500

Park Road

Fair

Over: Mounts Creek

East of Wooddale, Fayette, PA

Built 1980 Load: 46.3 t ADT: 190

N New Street

Fair

Over: Taylor Run

N WChester Bypass 3583A5, Chester, PA

Built 1940 Load: 46.3 t ADT: 1,000

NORWOOD ROAD

Fair

Over: BRANCH BRANDYWINE CREEK

E Williamburg Blvd 3471J5, Chester, PA

Built 1990 Load: 46.3 t ADT: 2,800

TAYLOR HILL RD

Fair

Over: S BR CODORUS CREEK

50 SOUTH OF SR 616, York, PA

Built 1996 Load: 46.3 t ADT: 100

INDIANTOWN RD

Fair

Over: INDIAN RUN

WEST OF CAMP RODGERS RD, Lancaster, PA

Built 1993 Load: 46.3 t ADT: 400

Cassel Road

Fair

Over: Licking Creek

Milford 2694-A6, Bucks, PA

Built 1950 Load: 46.3 t ADT: 200

Valley Road

Fair

Over: Rock Run

Falls 3152-A7, Bucks, PA

Built 1960 Load: 46.3 t ADT: 300

SR 61

Fair

Over: OVER SHAMOKIN CREEK

VILLAGE OF UNIONTOWN, Northumberland, PA

Built 1967 Load: 46.7 t ADT: 11,717

MULBERRY HILL ROAD

Fair

Over: GEORGES RUN

300 W OF SR18 INTERSECT, Washington, PA

Built 1984 Load: 46.7 t ADT: 100

US 30; SR 0030

Fair

Over: MARSH CREEK

SEVEN STARS, Adams, PA

Built 1990 Load: 47.2 t ADT: 6,752

PA 116; FAIRFIELD

Fair

Over: MARSH CREEK

SW OF GETTYSBURG, Adams, PA

Built 1947 Load: 47.2 t ADT: 9,265

PA134;Taneytown Rd

Fair

Over: Rock Creek

Barlow, Adams, PA

Built 1989 Load: 47.2 t ADT: 2,549

OXFORD ROAD

Fair

Over: BERMUDIAN CREEK

2 N HEIDLERSBURG/BERMUDIA, Adams, PA

Built 1963 Load: 47.2 t ADT: 375

TRIPOLI STREET

Fair

Over: I279 I579 NB&SB HOV

132 Tripoli St Bridge, Allegheny, PA

Built 1987 Load: 47.2 t ADT: 1,500

NORTH AV

Fair

Over: I279 I579 NB&SB HOV

133 E North Ave Bridge, Allegheny, PA

Built 1987 Load: 47.2 t ADT: 5,000

COVE RUN RD

Fair

Over: LONG RUN

1/2 MI.WEST OF TWP.RD.662, Allegheny, PA

Built 1959 Load: 47.2 t ADT: 1,202

BOYCE RD

Fair

Over: CHARTIERS CREEK

1/4 MI. EAST OF SR 3005, Allegheny, PA

Built 1996 Load: 47.2 t ADT: 10,193

POTATO GARDEN RD

Fair

Over: POTATO GARDEN RUN

NEAR SR 3089, Allegheny, PA

Built 1940 Load: 47.2 t ADT: 485

Showing 9,901-9,950 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.