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

PA 36

Fair

Over: YELLOW CREEK

0.1 MI S OF SR 1024, Bedford, PA

Built 2003 Load: 40.8 t ADT: 4,027

BUSINESS PARK LANE

Fair

Over: TRIB TO LEHIGH RIVER

100NORTH OF AMERICAN PWY, Lehigh, PA

Built 1996 Load: 40.8 t ADT: 500

OLD HERSHEY RD

Fair

Over: CONEWAGO CREEK

1500 FT NW OF T-871, Lancaster, PA

Built 2000 Load: 40.8 t ADT: 320

T-545 HANNA HALL

Fair

Over: W BR FRENCH CREEK

1500 WEST OF SR 89, Erie, PA

Built 2003 Load: 40.8 t ADT: 133

US 30 (EBL)

Fair

Over: RAYSTOWN BR JUNIATI RIV

16EAST OF PA 326, Bedford, PA

Built 2004 Load: 40.8 t ADT: 9,658

US 222

Fair

Over: BUS 222 SB

222 OVER BUS 222 SB RAMP, Berks, PA

Built 2004 Load: 40.8 t ADT: 40,201

SR 4013 NBL

Fair

Over: NORFOLK SO. RR & 8TH AVE

7TH STREET BRIDGE, Blair, PA

Built 2005 Load: 40.8 t ADT: 9,864

PGH MILLS BLVD

Fair

Over: SR 0028 NB SB

PGH MILLS MALL, Allegheny, PA

Built 2005 Load: 40.8 t ADT: 13,084

SR 127

Fair

Over: ALLEGHENY RIVER

HICKORY TOWNSHIP, Forest, PA

Built 2007 Load: 40.8 t ADT: 570

SR0722

Fair

Over: Lititz Creek

oregon manheim township, Lancaster, PA

Built 2008 Load: 40.8 t ADT: 5,016

I-78 WB

Fair

Over: SR 611

0.25 MI NW OF DELAWARE R., Northampton, PA

Built 1986 Load: 40.8 t ADT: 31,800

I-78 EB

Fair

Over: SR 611

0.24 MI NW OF DELAWARE R., Northampton, PA

Built 1986 Load: 40.8 t ADT: 31,800

AMB-ALIQUIP BRIDG

Fair

Over: ROUTE 51

ALIQUIPPA SIDE, Beaver, PA

Built 1958 Load: 40.8 t ADT: 12,951

SHADY AVENUE

Fair

Over: BURGETTS FORK

100 WEST OF SR 18, Washington, PA

Built 2013 Load: 40.8 t ADT: 300

Greensburg Pike

Fair

Over: Turtle Creek NSR

TL06 Turtle Creek #6, Allegheny, PA

Built 2014 Load: 40.8 t ADT: 6,908

Hollo Road

Fair

Over: Shoeneck Creek

0.2 mi West of SR 33, Northampton, PA

Built 1986 Load: 40.8 t ADT: 1,000

T-448 LEAR ROAD

Fair

Over: FALLING RUN

0.5 Mi E SR 217 Inter., Indiana, PA

Built 1952 Load: 40.8 t ADT: 60

Park Manor Blvd

Fair

Over: Montour Run

100 SE of Montour Run Rd, Allegheny, PA

Built 1988 Load: 40.8 t ADT: 2,000

Smith Road

Fair

Over: Rock Run

1 M from Ridge Rd 3254-E3, Montgomery, PA

Built 1990 Load: 40.8 t ADT: 400

KILORAN WYND ROAD

Fair

Over: BLACK HORSE CREEK

W of St AndrewsRd 3361H3, Chester, PA

Built 1990 Load: 40.8 t ADT: 200

STERLING DRIVE

Fair

Over: W BR NESHAMINY CR

0.4MI W OF SR309 3032-F4, Montgomery, PA

Built 2004 Load: 40.8 t ADT: 1,000

SHIP ROCK RD

Fair

Over: TRIB TO PEQUEA CREEK

EAST OF HERRVILLE RD, Lancaster, PA

Built 1995 Load: 40.8 t ADT: 100

I-376 EB

Fair

Over: MON RIVER & WARF 376 WB

Fort Pitt Bridge, Allegheny, PA

Built 1953 Load: 40.8 t ADT: 38,461

Tanyard Road

Fair

Over: Ironworks Creek

Northampton 3148-H7, Bucks, PA

Built 1980 Load: 40.8 t ADT: 300

BEAVER DAM RD

Fair

Over: HONEY CREEK

NEAR TURNPIKE OVERPASS, Lawrence, PA

Built 1956 Load: 41.1 t ADT: 157

SR 0119

Fair

Over: ELK RUN

0.1 MI SW SR 310 INTER., Jefferson, PA

Built 2013 Load: 41.1 t ADT: 10,538

SR 2014

Fair

Over: OVER MILLERS RUN

CITY OF WILLIAMSPORT, Lycoming, PA

Built 1949 Load: 41.5 t ADT: 9,073

FORGE HILL ROAD

Fair

Over: CABIN CREEK

S.E.PROSPECT/CABIN CREEK, York, PA

Built 1955 Load: 41.5 t ADT: 386

CHESTNUT STREET

Fair

Over: COPLAY CREEK

SOUTHEAST OF EGYPT, Lehigh, PA

Built 2010 Load: 41.5 t ADT: 6,938

SR 4010

Fair

Over: BUFFALO CREEK

70 ft SE SR4035 Intersect, Armstrong, PA

Built 2013 Load: 41.5 t ADT: 708

SR 3007

Fair

Over: REDBANK CREEK

0.2 Mi S SR 28 Intersec., Jefferson, PA

Built 2014 Load: 41.5 t ADT: 1,077

SR 3001

Fair

Over: US 15; SR 0015

1.75 MILES N OF MARYLAND, Adams, PA

Built 1963 Load: 41.7 t ADT: 2,717

RAMPIKE HILL ROAD

Fair

Over: OPOSSUM CREEK

.8 NE BENDERS/OPOSSUM CRK, Adams, PA

Built 1972 Load: 41.7 t ADT: 300

RT 0028 SB

Fair

Over: SR 1028 BAKERSTOWN ROAD

BAKERSTOWN INTERCHANGE, Allegheny, PA

Built 1972 Load: 41.7 t ADT: 9,051

WASHINGTON AVE

Fair

Over: CHARTIERS CREEK

HEIDELBERG-SCOTT TWP LINE, Allegheny, PA

Built 1965 Load: 41.7 t ADT: 5,722

Elizabeth Bridge

Fair

Over: SR837 2001 CSX NS MON RI

Elizabeth Bridge, Allegheny, PA

Built 1951 Load: 41.7 t ADT: 28,721

SR 65

Fair

Over: STATE RAMPS RR. CHATEAU

SR 65 Marshall Ave. Inter, Allegheny, PA

Built 1971 Load: 41.7 t ADT: 31,246

RAYMOND P SHAFE HW

Fair

Over: THOMS RUN RD FLOOD CHANN

500 WEST OF SR 0050, Allegheny, PA

Built 1965 Load: 41.7 t ADT: 35,133

RAYMOND SHAFER HW

Fair

Over: GLENFIELD RD KILBUCK RUN

SR79 NB OVER GLENFIELD RD, Allegheny, PA

Built 1971 Load: 41.7 t ADT: 15,757

RAYMOND E WILT HW

Fair

Over: MCALEER RD.

1 MI. S.E. OF SR 0079, Allegheny, PA

Built 1988 Load: 41.7 t ADT: 21,278

BIGELOW BLVD WB

Fair

Over: I-579 NB SB RAMP B

Crosstown Blvd, Allegheny, PA

Built 1986 Load: 41.7 t ADT: 11,131

FREEPORT RD

Fair

Over: BARGE BASIN

HARMAR OVER BARGE BASIN, Allegheny, PA

Built 1928 Load: 41.7 t ADT: 19,848

31st Street Bridge

Fair

Over: ALLEG.RIV. RRS LOCALS

31st Street Bridge, Allegheny, PA

Built 1928 Load: 41.7 t ADT: 9,015

GREENTREE ROAD

Fair

Over: CHARTIERS CREEK

AT INTERSECTION W/PA 50, Allegheny, PA

Built 1960 Load: 41.7 t ADT: 19,293

INGOMAR RD

Fair

Over: BR.PINE CREEK

150E.OF MCKNIGHT ROAD, Allegheny, PA

Built 1936 Load: 41.7 t ADT: 10,687

RENTAL ACCESS RD

Fair

Over: RAMP EP-E

OPA112 AP08 AIRPORT 10-5, Allegheny, PA

Built 1992 Load: 41.7 t ADT: 2,867

RAMP EP-W RD

Fair

Over: RENTAL CAR ACCESS ROAD

OPA113 AP09 AIRPORT 10-6, Allegheny, PA

Built 1992 Load: 41.7 t ADT: 5,566

FORT PITT BL

Fair

Over: MON WHARF PARKING LOT

035 Fort Pitt Blvd, Allegheny, PA

Built 2002 Load: 41.7 t ADT: 15,955

PENNSYLVANIA AV

Fair

Over: NORFOLK SOUTHERN RR

075 Pennsylvania Ave Brid, Allegheny, PA

Built 1986 Load: 41.7 t ADT: 10,125

SYCAMORE ST

Fair

Over: RAVINE

123 SYCAMORE ST, Allegheny, PA

Built 1984 Load: 41.7 t ADT: 1,700

Showing 8,201-8,250 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.