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

PERRY HY

Good

Over: SR 910

SR 19 OVER SR 910, Allegheny, PA

Built 2002 Load: 59.0 t ADT: 24,949

RUSSELL STREET

Good

Over: MILL CREEK

ST.CLAIR RUSSELL ST., Schuylkill, PA

Built 2002 Load: 59.0 t ADT: 100

T-893

Good

Over: SOUTH BR.TOWANDA CREEK

1 MI. S. OF MONROETON, Bradford, PA

Built 2002 Load: 59.0 t ADT: 250

US 219 NBL

Good

Over: SR 8005 RAMPS C & D

OVR SR8005 3MI N SOMERSET, Somerset, PA

Built 2003 Load: 59.0 t ADT: 5,469

DENNIS MILL BRIDGE

Good

Over: W.B. BRIAR CREEK

0.6 MI. E OF FOWLERSVILLE, Columbia, PA

Built 2004 Load: 59.0 t ADT: 15

SR 4020 FISHER AVE

Good

Over: I-81; SR 0081

I-81 EXIT #90, Lebanon, PA

Built 2005 Load: 59.0 t ADT: 8,954

PA TPK RAMP JK

Good

Over: PA TPK (I-76)

PERRY HWY. INTERCHANGE, Butler, PA

Built 2004 Load: 59.0 t ADT: 17,319

MINE HOLE ROAD

Good

Over: MINE HOLE RUN

AT LEETONIA RD INTERSECT., Tioga, PA

Built 2006 Load: 59.0 t ADT: 10

T-338 PFEIFER RD

Good

Over: LITTLE YELLOW CREEK

BTW SR0019 & T353, Butler, PA

Built 2005 Load: 59.0 t ADT: 100

NEALY ROAD T-353

Good

Over: BIG SPRING CREEK

1.5 MI E OF SR 533, Cumberland, PA

Built 2006 Load: 59.0 t ADT: 200

SR 4011 GRANGE RD

Good

Over: OVER TR.CUSSEWAGO

CUSSEWAGO TOWNSHIP, Crawford, PA

Built 2007 Load: 59.0 t ADT: 570

PA462; Columbia Av

Good

Over: Trib Strickler Run

1 mile E of Columbia, Lancaster, PA

Built 2007 Load: 59.0 t ADT: 14,195

SR 2045

Good

Over: Tumble Brook

Center Valley, Lehigh, PA

Built 2009 Load: 59.0 t ADT: 7,551

SR 1045

Good

Over: Monastery Run

S of Latrobe, Westmoreland, PA

Built 2008 Load: 59.0 t ADT: 1,447

SR 1031

Good

Over: Galley Run

NW of Connellsville, Fayette, PA

Built 2009 Load: 59.0 t ADT: 1,412

SR 3027

Good

Over: EAST BR WYALUSING CRK

JESSUP TWP 300 S TR 706, Susquehanna, PA

Built 2009 Load: 59.0 t ADT: 121

SR 19

Good

Over: SR 60 @ SR 19 INTER

SR 19 OVER S.MAIN ST, Allegheny, PA

Built 2010 Load: 59.0 t ADT: 35,811

Timber Bridge Lane

Good

Over: Conewago Creek

150 N of Mt Gretna Rd, Lebanon, PA

Built 2013 Load: 59.0 t ADT: 210

Brownsdale Rd

Good

Over: Glade Run

Intersect Brownsmill Rd, Butler, PA

Built 2016 Load: 59.0 t ADT: 1,705

T701 Cherry Street

Good

Over: UNT to E Br. Codorus Crk

1.4 MI SW of Winterstown, York, PA

Built 2015 Load: 59.0 t ADT: 100

BITNER RD (SR1043)

Good

Over: REDSTONE CREEK

N. UNION & FRANKLIN TWPS., Fayette, PA

Built 2017 Load: 59.0 t ADT: 1,123

Jones Avenue

Good

Over: Thompson Run East Branch

TE02 THOMPSON E.S. NO 2, Allegheny, PA

Built 2022 Load: 59.0 t ADT: 462

PA TPK (I-276)RPAB

Good

Over: T-317 (Ellwood Ave)

DELA RIVER BRIDGE PLAZA, Bucks, PA

Built 2020 Load: 59.0 t ADT: 42,834

T-592 WATSON RD

Good

Over: SCOTT CREEK

0.5 MI NE of SR 74, York, PA

Built 2021 Load: 59.0 t ADT: 100

STEUBENVILLE PK

Good

Over: ABANDONED MOUNTOUR RR

RT.22 & 980 INTER., Allegheny, PA

Built 1945 Load: 59.9 t ADT: 2,873

PA TPK (I-76)

Good

Over: BEATTY ROAD

NEAR CCAC BOYCE CAMPUS, Allegheny, PA

Built 1952 Load: 59.9 t ADT: 38,689

SCOTT RD

Good

Over: MONTOUR RUN

MT06 MONTOUR RUN NO. 6, Allegheny, PA

Built 1889 Load: 59.9 t ADT: 650

SR 1001

Good

Over: DUNNINGS CREEK

1 MI.E.OF CESSNA, Bedford, PA

Built 1986 Load: 59.9 t ADT: 427

PA 164

Good

Over: TR.PLUM CREEK

1.25 MI.W.OF MARTINSBURG, Blair, PA

Built 1966 Load: 59.9 t ADT: 9,228

SR0019 NB&SB

Good

Over: PA TURNPIKE RAMP R

DUTIHL, Butler, PA

Built 2004 Load: 59.9 t ADT: 31,905

SR 1006

Good

Over: CLEARFIELD CREEK

VILLAGE OF SYBERTON, Cambria, PA

Built 1940 Load: 59.9 t ADT: 1,021

SR 4004

Good

Over: W BR SUSQUEHANNA RIVER

1.5 MI.W.OF CARROLLTOWN, Cambria, PA

Built 1948 Load: 59.9 t ADT: 914

CREAM ROAD

Good

Over: TRIB OF MUDDY RUN

100FT.W. SR 30936 43C06, Chester, PA

Built 2000 Load: 59.9 t ADT: 163

PEMBERTON ROAD

Good

Over: W.BR.RED CLAY CREEK

0.4 MI SW OF SR01 3801-E5, Chester, PA

Built 2004 Load: 59.9 t ADT: 420

SR 1027

Good

Over: BRANCH OF JACOBS CREEK

UPPER TYRONE TOWNSHIP, Fayette, PA

Built 1922 Load: 59.9 t ADT: 5,843

SR 1016

Good

Over: LITTLE WHITELEY CREEK

MONONGAHELA TOWNSHIP, Greene, PA

Built 1920 Load: 59.9 t ADT: 150

SR 0006 TR 6 & 11

Good

Over: SR 0632 TR 632

DALTON BORO OVER TR 632, Lackawanna, PA

Built 1952 Load: 59.9 t ADT: 9,873

WILLOW STREET

Good

Over: QUITTAPAHILLA CREEK

375 FT NE OF 10TH STREET, Lebanon, PA

Built 1985 Load: 59.9 t ADT: 1,050

BRIDGE 2611 T-730

Good

Over: OVER MILL CREEK

ANDRUSKY RD FINDLEY TWP., Mercer, PA

Built 1969 Load: 59.9 t ADT: 412

BRIDGE 112 T-374

Good

Over: OVER SUGAR RUN

SUGAR RUN RD. GREENE TWP., Mercer, PA

Built 1990 Load: 59.9 t ADT: 81

TRAFFIC ROUTE 309

Good

Over: MCKEAN ROAD & PATH

SPRING HOUSE 3145F10, Montgomery, PA

Built 1958 Load: 59.9 t ADT: 52,549

PA TPK (Ramp H)

Good

Over: SR 3007

MID-COUNTY INTERCHANGE, Montgomery, PA

Built 1993 Load: 59.9 t ADT: 32,775

SR 0084 I-84 EB

Good

Over: SCHOCCOPPEE RD T-428

MLFRD TWP OVR T-428 RD, Pike, PA

Built 1969 Load: 59.9 t ADT: 9,358

SR 4003

Good

Over: RATTLESNAKE CREEK

LACKAWAXN TP @ JCT SR1014, Pike, PA

Built 1939 Load: 59.9 t ADT: 504

T-300 TOAD HLLW RD

Good

Over: OSWAYO CREEK

1000 FT SE OF SR 244, Potter, PA

Built 1910 Load: 59.9 t ADT: 50

SR 1011

Good

Over: TR.WELLS CREEK

LISTIE, Somerset, PA

Built 1941 Load: 59.9 t ADT: 333

PA TPK (I-76)

Good

Over: T-546; B-441

NEAR SOMERSET MAINT.SHED, Somerset, PA

Built 2004 Load: 59.9 t ADT: 29,452

PA TPK (I-76)

Good

Over: KIMBERLY RUN

WEST OF BROTHERTON, Somerset, PA

Built 2004 Load: 59.9 t ADT: 29,452

SR0528

Good

Over: BUFF & PITT RR

WAHLVILLE NO.1, Butler, PA

Built 1997 Load: 59.9 t ADT: 517

SR15 NORTH BOUND

Good

Over: OVER KOHLER RUN

2 MILE NORTH OF LIBERTY, Tioga, PA

Built 1997 Load: 59.9 t ADT: 4,491

Showing 19,751-19,800 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.