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

US 30; SR 0030 WB

Fair

Over: SR 1037

.3 MI N OF LR128, York, PA

Built 1971 Load: 31.8 t ADT: 23,016

SR 3070 blk rk.rd.

Fair

Over: LAKE MARBURG

2.5 MILE SE OF HANOVER, York, PA

Built 1967 Load: 31.8 t ADT: 2,992

SR 4011

Fair

Over: LITTLE CONEWAGO

2.5 MI.N.E. OF DOVER, York, PA

Built 1960 Load: 31.8 t ADT: 5,558

SR 4045

Fair

Over: DOGWOOD RUN

1 MILE WEST OF DILLSBURG, York, PA

Built 1949 Load: 31.8 t ADT: 3,758

PERSHING AVENUE

Fair

Over: WILLIS RUN

PERSHING AVE WILLIS RUN, York, PA

Built 1955 Load: 31.8 t ADT: 750

TR 462;MARKET ST.

Fair

Over: CODORUS CREEK

YORK CITY CODORUS CR, York, PA

Built 1951 Load: 31.8 t ADT: 22,000

S. MAIN STREET

Fair

Over: MANHATTAN RUN

MAIN ST;MANHATT RUN, York, PA

Built 1931 Load: 31.8 t ADT: 1,500

INTERSTATE 95 S.B.

Fair

Over: SLUDGE LAGOONS & RAMP B

N.PLATT BRIDGE 3699F08, Philadelphia, PA

Built 1985 Load: 31.8 t ADT: 83,681

INTERSTATE 95 S.B.

Fair

Over: ROOSELT.PK.NAVY YARD;I95

S.APPR.GIRARD PT.3700A07, Philadelphia, PA

Built 1973 Load: 31.8 t ADT: 97,889

INTERSTATE 95 N.B.

Fair

Over: SPRING GARDEN STREET

.4MI.N.B.FRANKLIN 3590H07, Philadelphia, PA

Built 1975 Load: 31.8 t ADT: 80,788

INTERSTATE 95

Fair

Over: MARGARET STR.AND CONRAIL

NEAR TACONY ST. 3481H10, Philadelphia, PA

Built 1966 Load: 31.8 t ADT: 251,200

INTERSTATE 95 N.B.

Fair

Over: POQUESSING CR & GRANT AV

NR.GRANT AV 3483D01, Philadelphia, PA

Built 1965 Load: 31.8 t ADT: 61,748

30TH STREET

Fair

Over: AMTRAK & CONRAIL LINES

W.SIDE 30TH ST.STA3590A07, Philadelphia, PA

Built 1933 Load: 31.8 t ADT: 24,728

RAMP ND(NB)OFF

Fair

Over: REED STREET OPEN GROUND

REED ST.INTERCHG.3700G02, Philadelphia, PA

Built 1990 Load: 31.8 t ADT: 8,023

RAMP H N.B. ON

Fair

Over: JUNIATA ALMOND THOMSON

BETSY ROSS BRIDGE 3591H01, Philadelphia, PA

Built 1975 Load: 31.8 t ADT: 5,090

SCHUYLKILL AV.WEST

Fair

Over: SCHUYLKILL EXP;RAMP A

BTWN.WALNUT/CHEST 3590A08, Philadelphia, PA

Built 1959 Load: 31.8 t ADT: 8,442

T-305 E. HANNAH LN

Fair

Over: SPARROW RUN

90 FT SOUTH INT US 220, Centre, PA

Built 1995 Load: 31.8 t ADT: 50

FULLERS BRIDGE

Fair

Over: LITTLE LEHIGH CREEK

FULLERS BRIDGE, Lehigh, PA

Built 1998 Load: 31.8 t ADT: 10

BERAM AVENUE

Fair

Over: WHEELING & LAKE ERIE RR

102001 300 E OF WASH RD, Allegheny, PA

Built 1999 Load: 31.8 t ADT: 1,200

T-371 BUTTER CR RD

Fair

Over: HONEOYE CREEK

0.14 MI FROM LR 52014, Potter, PA

Built 1999 Load: 31.8 t ADT: 51

T-520 QUARRY ROAD

Fair

Over: FIEDLER RUN

1.2 MI.SOUTH INT SR 45, Centre, PA

Built 1989 Load: 31.8 t ADT: 35

SR0018

Fair

Over: S FORK TEN MILE RUN

CENTER TOWNSHIP, Greene, PA

Built 2000 Load: 31.8 t ADT: 3,143

SR 99-I 99

Fair

Over: SR 150-PA 150

6 MI. N. STATE COLLEGE, Centre, PA

Built 2001 Load: 31.8 t ADT: 11,450

PA 340; Old Phia.

Fair

Over: US 30; SR 0030

PA 340 OVER US 30, Lancaster, PA

Built 2002 Load: 31.8 t ADT: 19,611

SR 80-I 80

Fair

Over: SEDA-COG/N & B E/SR 150

EXIT 158 MILESBURG INTER, Centre, PA

Built 2006 Load: 31.8 t ADT: 11,747

Ramp C

Fair

Over: Norfolk Southern RR Prop

I-81 SB Ramp to US11 NB, Cumberland, PA

Built 1972 Load: 31.8 t ADT: 2,182

PA TPK (I-76)

Fair

Over: SR 0030

OVER US 30, Bedford, PA

Built 2004 Load: 31.8 t ADT: 36,252

AMB- ALIQU BRIDGE

Fair

Over: ROUTE 65

AMBRIDGE SIDE, Beaver, PA

Built 1960 Load: 31.8 t ADT: 12,951

PA TPK (TOLL 43)

Fair

Over: UNT 11 to Jennings Run

West of Exit M15, Fayette, PA

Built 2008 Load: 31.8 t ADT: 1,000

N 5th Avenue

Fair

Over: Kipple Run

N 5th Ave over Kipple Run, Blair, PA

Built 2003 Load: 31.8 t ADT: 50

MCCUE ROAD

Fair

Over: E BR OF WHITE CLAY CREEK

W OF CHURCH RD 3800E05, Chester, PA

Built 1980 Load: 31.8 t ADT: 500

HARVARD LN

Fair

Over: MEADOWBROOK RUN

N OF BRYN MAWR AVE, Delaware, PA

Built 1959 Load: 31.8 t ADT: 50

CANTERBURY DRIVE

Fair

Over: TRIB. TOWAMENCIN CREEK

0.2MI EAST OF GREEN LN RD, Montgomery, PA

Built 1970 Load: 31.8 t ADT: 99

SR 0279 SB

Fair

Over: SR 4003 4009 & RAMP J

McKnight Interchange, Allegheny, PA

Built 1986 Load: 32.4 t ADT: 24,924

MILL ROAD

Fair

Over: CONESTOGA CREEK

HARTZ MILL BRIDGE, Berks, PA

Built 1956 Load: 32.4 t ADT: 3,495

T537 TAYLOR SCH RD

Fair

Over: SUGAR CREEK

1.1 MI. EAST OF SYLVANIA, Bradford, PA

Built 1977 Load: 32.4 t ADT: 100

JEFFERSON AVENUE

Fair

Over: TROUT RUN

PORTAGE JEFFERSON AVENUE, Cambria, PA

Built 2008 Load: 32.4 t ADT: 256

SR 2014 W 4TH ST

Fair

Over: OVER LYCOMING CREEK

CITY OF WMSPT. W.4TH ST., Lycoming, PA

Built 1955 Load: 32.4 t ADT: 5,504

SR 58 KINSMAN ROAD

Fair

Over: FAHERTY RUN

GREENE TOWNSHIP, Mercer, PA

Built 1924 Load: 32.4 t ADT: 3,821

SR 318 W.MIDDLESEX

Fair

Over: OVER LT NESHANNOCK CREEK

EAST LACKAWANNOCK TWP., Mercer, PA

Built 1956 Load: 32.4 t ADT: 2,456

SR 4026

Fair

Over: SR 0022

ROBINSON TOWNSHIP, Washington, PA

Built 1968 Load: 32.4 t ADT: 3,988

RAMP LL

Fair

Over: I-95;SR6291;PLAZA DRIVE

AIRPORT INTERCHG 3698J10, Philadelphia, PA

Built 2000 Load: 32.4 t ADT: 6,157

T-765 DOBBS ROAD

Fair

Over: FEDERAL RUN

2 MI N LITTLE COOLEY, Crawford, PA

Built 2011 Load: 32.4 t ADT: 50

Fancourt Street

Fair

Over: Tenth St. Bypass

143 10th St Bypass off Ft, Allegheny, PA

Built 2012 Load: 32.4 t ADT: 6,000

SALEM CHURCH ROAD

Fair

Over: CREEK

0.5 MI S OF US 11, Cumberland, PA

Built 2006 Load: 32.7 t ADT: 1,500

PA 16; SR 0016

Fair

Over: MINEY BRANCH OF TOMS CRK

SW OF GETTYSBURG, Adams, PA

Built 1939 Load: 32.7 t ADT: 6,506

PA 194; SR 0194

Fair

Over: SOUTH BR OF CONEWAGO

NE OF LITTLESTOWN, Adams, PA

Built 1956 Load: 32.7 t ADT: 12,896

SR 1005 Latimore r

Fair

Over: BERMUDIAN CREEK

PONDTOWN MILL, Adams, PA

Built 1910 Load: 32.7 t ADT: 124

SR 3014

Fair

Over: TOMS CREEK

.5 MI.W. OF IRON SPRG., Adams, PA

Built 1901 Load: 32.7 t ADT: 619

3021 JACKS MTN RD

Fair

Over: TOMS CREEK

1.5 MI. S.W. FAIRFIELD, Adams, PA

Built 1890 Load: 32.7 t ADT: 2,416

Showing 3,851-3,900 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.