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 3029

Fair

Over: MILL CREEK

NORTH YORK LOUCKS MILL RD, York, PA

Built 1938 Load: 35.4 t ADT: 6,160

SR 3072

Fair

Over: OIL CREEK

MENGES MILLS, York, PA

Built 1958 Load: 35.4 t ADT: 7,279

OLD MILL ROAD

Fair

Over: DOGWOOD RUN

.1W DILLSBURG/DOGWOOD RUN, York, PA

Built 1986 Load: 35.4 t ADT: 400

KUNKLES MILL ROAD

Fair

Over: CONEWAGO CREEK

2 MI.E.ROSSVILLE/CONEWAGO, York, PA

Built 1954 Load: 35.4 t ADT: 286

T377 BROWN RD.

Fair

Over: WEST BRANCH CODORUS CR.

N OF CODORUS/ N.CODORUS, York, PA

Built 1955 Load: 35.4 t ADT: 86

SR 8013 RAMP T

Fair

Over: MILL CREEK

PA462 ON RAMP TO I-83 S., York, PA

Built 1959 Load: 35.4 t ADT: 1,648

ROOSEVELT BLVD.

Fair

Over: PENNYPACK CRK;PATHS

1MI.S.WELSH ROAD 3372D10, Philadelphia, PA

Built 1920 Load: 35.4 t ADT: 52,330

GIRARD AVENUE

Fair

Over: SCHUYL. RIVER & KELLY DR

FAIRMOUNT PARK 3589K04, Philadelphia, PA

Built 1972 Load: 35.4 t ADT: 42,549

INTERSTATE 95 N.B.

Fair

Over: SWAMP LAND (SLUDGE)

N.APPR.GIRARD PT. 3699G09, Philadelphia, PA

Built 1973 Load: 35.4 t ADT: 85,934

INTERSTATE 95 S.B.

Fair

Over: RACE STREET&RAMP NFN

NR.B FRANKLIN BRG.3590H08, Philadelphia, PA

Built 1975 Load: 35.4 t ADT: 66,507

INTERSTATE 95 S.B.

Fair

Over: FRANKFD AV FRNKFRD EL.

N.BEN FRANKLIN BR3590H06, Philadelphia, PA

Built 1977 Load: 35.4 t ADT: 66,507

ACADEMY ROAD

Fair

Over: BYBERRY CREEK

NEAR NEWBERRY ROAD3373C06, Philadelphia, PA

Built 1960 Load: 35.4 t ADT: 13,156

CHESTNUT STREET

Fair

Over: DELAWARE AVE;RAMP;RR

FRONT;DELAWARE AVE.3590H9, Philadelphia, PA

Built 1975 Load: 35.4 t ADT: 867

PASSYUNK AVENUE

Fair

Over: SCHUYLKILL RIVER;ROADS

NEAR JERRYS CORNER3699H03, Philadelphia, PA

Built 1983 Load: 35.4 t ADT: 47,625

Chelten Avenue

Fair

Over: SEPTA (Chestnut Hill W.)

W of Pulaski Avenue 17D11, Philadelphia, PA

Built 1917 Load: 35.4 t ADT: 6,600

Kensington Avenue

Fair

Over: Frankford Creek

NE of Hunting Park 29G02, Philadelphia, PA

Built 1892 Load: 35.4 t ADT: 11,500

Pennsylvania Ave.

Fair

Over: Conrail & B&O Railroad

BTWN 26TH & 27TH 28D09, Philadelphia, PA

Built 1931 Load: 35.4 t ADT: 75,000

34th Street

Fair

Over: AMTRAK (NEC))

N. OF MANTUA ST. 28B09, Philadelphia, PA

Built 1994 Load: 35.4 t ADT: 14,200

RAMP J N.B. OFF

Fair

Over: INTERSTATE 95;FRONT ST.

WALT WHITMAN BRGE.3700F06, Philadelphia, PA

Built 1974 Load: 35.4 t ADT: 18,912

RAMP A TO I-76

Fair

Over: SCHUYLKILL EXPWAY-WB

SCHKILL.EXWY.INTCH3479G09, Philadelphia, PA

Built 1968 Load: 35.4 t ADT: 27,408

T-710

Fair

Over: STRODES RUN

0.2 MI NORTH OF SR 22, Mifflin, PA

Built 1998 Load: 35.4 t ADT: 350

U.S.30; SR 0030

Fair

Over: LITTLE CONESTOGA CREEK

E.HEMP./MANHEIM TWP.LINE, Lancaster, PA

Built 1963 Load: 35.4 t ADT: 60,114

SR 4009 SUNVILLE R

Fair

Over: OVER SUGAR CREEK E.BR.

OAKLAND TOWNSHIP, Venango, PA

Built 2004 Load: 35.4 t ADT: 229

RIDGE ROAD

Fair

Over: SR 0376 EB WB

SETTLERS CABIN INTERCHANG, Allegheny, PA

Built 2005 Load: 35.4 t ADT: 8,422

T-831 GLENWOOD WAY

Fair

Over: CONNOQUENESSING CR

0.1 MI. WEST OF SR 0038, Butler, PA

Built 2006 Load: 35.4 t ADT: 500

Liberty Br. ramp

Fair

Over: 1st Ave 2nd Ave Local

Liberty Br.to Blvd. Alies, Allegheny, PA

Built 1928 Load: 35.4 t ADT: 6,489

T-476 SNYDER H. RD

Fair

Over: HUBER RUN

1/2 MI SOUTH OF T-502, Lancaster, PA

Built 2005 Load: 35.4 t ADT: 200

T-476 SNYDER H. RD

Fair

Over: HUBER RUN

1 MI SOUTH OF T-502, Lancaster, PA

Built 2005 Load: 35.4 t ADT: 200

SR 0075

Fair

Over: LAUREL RUN

HONEYGROVE, Juniata, PA

Built 2009 Load: 35.4 t ADT: 622

PINE SWAMP ROAD

Fair

Over: PINE CREEK

WARWICK TOWNSHIP 4F6, Chester, PA

Built 2010 Load: 35.4 t ADT: 833

PA TPK (Ramp AB)

Fair

Over: PA TPK (I-76)

Middlesex Twp, Cumberland, PA

Built 2009 Load: 35.4 t ADT: 7,012

Turnpike Ramp

Fair

Over: PA TPK (I-76)

Lurgan Twp, Franklin, PA

Built 2012 Load: 35.4 t ADT: 833

Kreinbrook Hill Rd

Fair

Over: Latta Run

East of Hammondville, Fayette, PA

Built 1935 Load: 35.4 t ADT: 200

T-447 FORT RUN RD

Fair

Over: FORT RUN

235FT E OF SR66 & SR128, Armstrong, PA

Built 1979 Load: 35.4 t ADT: 360

NINTH STREET BR

Fair

Over: ALLEGH RIV 10 ST BY-PASS

AL04 9TH ST BRIDGE, Allegheny, PA

Built 1926 Load: 35.6 t ADT: 22,462

SR 4008

Fair

Over: QUITTAPAHILLA CREEK

3 MI.N.E. PALMYRA, Lebanon, PA

Built 1962 Load: 35.6 t ADT: 1,981

T-416

Fair

Over: ALLEGHENY RIVER

TURTLEPOINT, McKean, PA

Built 1963 Load: 35.6 t ADT: 424

T-628 Q.DAM ROAD

Fair

Over: QUEMAHONING RESERVOIR

2.5 MI.E.OF BOSWELL, Somerset, PA

Built 1939 Load: 35.6 t ADT: 350

WAITZ ROAD

Fair

Over: CHERRYTREE RUN

RYND FARM, Venango, PA

Built 2012 Load: 35.6 t ADT: 100

DUNCAN AVENUE

Fair

Over: GOURDHEAD RUN

200 FT W OF SR 8, Allegheny, PA

Built 2014 Load: 35.6 t ADT: 4,000

SR 0119 SB

Fair

Over: SR 1002

1 Mi S SR 1004 Inter., Indiana, PA

Built 2014 Load: 35.6 t ADT: 3,837

Station St.

Fair

Over: Moon Run

1200 ft North of SR 51, Allegheny, PA

Built 1990 Load: 35.6 t ADT: 100

NEW GALENA ROAD

Fair

Over: N.BRANCH NESHAMINY CREEK

.2 MI SW Rt 313 2922 C5, Bucks, PA

Built 2017 Load: 35.6 t ADT: 750

SR 0279 NB

Fair

Over: SR 0279SB

Fort Duquesne Bridge, Allegheny, PA

Built 1985 Load: 36.0 t ADT: 17,076

T-531 BROAD MTN RD

Fair

Over: E BR STANDING STONE CRK

GREENWOOD FURNACE, Huntingdon, PA

Built 2008 Load: 36.0 t ADT: 275

T-455 OLD MILL RD.

Fair

Over: CATAWISSA CREEK

1MI NORTH OF BRANDONVILLE, Schuylkill, PA

Built 1927 Load: 36.0 t ADT: 50

PA 31

Fair

Over: EAST BRANCH COXES CREEK

0.14 MILE EAST OF PA 281N, Somerset, PA

Built 2012 Load: 36.0 t ADT: 13,258

CO RT 413

Fair

Over: DELAWARE RIVER

0.8 MI NNW JCT US RT 130, Armstrong, PA

Built 1931 Load: 36.2 t ADT: 26,315

US 15 SB; SR 0015

Fair

Over: MIDDLE CREEK

1.25 MI.N. OF MD.LINE, Adams, PA

Built 1963 Load: 36.3 t ADT: 8,603

US 30; SR 0030

Fair

Over: MARSH CREEK

0.5 MI.W. OF CASHTOWN, Adams, PA

Built 1948 Load: 36.3 t ADT: 9,429

Showing 6,351-6,400 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.