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 285 CAUSEWAY

Fair

Over: OVER PYMATUNING RES

NORTH SHENANGO TOWNSHIP, Crawford, PA

Built 1933 Load: 40.8 t ADT: 3,104

SR 2029 GRESHAM

Fair

Over: OVER OIL CREEK

HYDETOWN BOROUGH, Crawford, PA

Built 1892 Load: 40.8 t ADT: 423

US 11; W.KING ST.

Fair

Over: MIDDLE SPRING CREEK

SHIPPENSBURG, Cumberland, PA

Built 1911 Load: 40.8 t ADT: 11,499

I-81 NB; SR 0081

Fair

Over: SR 4003 KLINE RD.

1 MI N OF EXIT-10 I-29, Cumberland, PA

Built 1963 Load: 40.8 t ADT: 19,445

I-81 SB; SR 0081

Fair

Over: SR 4003

1 MI N OF EXIT-10 I-81, Cumberland, PA

Built 1963 Load: 40.8 t ADT: 19,387

SEARS RUN DRIVE

Fair

Over: TRIB CONODOGUINET CREEK

2.7 NW CAMP HILL/TR.CONOD, Cumberland, PA

Built 1990 Load: 40.8 t ADT: 150

PA 39; SR 0039

Fair

Over: NORFOLK SOUTHERN RR

0.5 MI S OF ROCKVILLE, Dauphin, PA

Built 1971 Load: 40.8 t ADT: 12,488

I-81 NB; SR 0081

Fair

Over: I-83 NB; SR 0083

I-81& I-83 INTERCHANGE, Dauphin, PA

Built 1969 Load: 40.8 t ADT: 34,584

I-81 NB; SR 0081

Fair

Over: TWP RD 432

1 MI. N. PROGRESS, Dauphin, PA

Built 1969 Load: 40.8 t ADT: 34,584

PETERSMTN.RD. /225

Fair

Over: POWELL CREEK

3 MI.S. OF HALIFAX, Dauphin, PA

Built 1990 Load: 40.8 t ADT: 7,155

SR 2002 SCHOOL HOU

Fair

Over: IRON RUN

3 MI. N.E. MIDDLETOWN, Dauphin, PA

Built 1965 Load: 40.8 t ADT: 818

MULBERRY ST

Fair

Over: SR 0230 AMTRAK NSRC

MULBERRY STREET, Dauphin, PA

Built 1909 Load: 40.8 t ADT: 9,447

SR 3014

Fair

Over: WALNUT ST UNDERPASS

STATE STREET, Dauphin, PA

Built 1955 Load: 40.8 t ADT: 9,128

TWP RD 382

Fair

Over: SR 3032

1.0 MI. N.E. OF HIGHSPIRE, Dauphin, PA

Built 1976 Load: 40.8 t ADT: 1,956

PA TPK (I-76)

Fair

Over: LR22072 SR2002

LONDONDERRY TWP, Dauphin, PA

Built 1949 Load: 40.8 t ADT: 24,423

N. LINGLE AVE.

Fair

Over: NORFOLK SOUTHERN

2 M-NE HERSHEY/NSRR, Dauphin, PA

Built 1995 Load: 40.8 t ADT: 1,500

PEIFFERS LN. T-392

Fair

Over: SPRING CR-

.1E I-83&1S PT./SPR CK, Dauphin, PA

Built 1996 Load: 40.8 t ADT: 200

DEVONSHIRE HTS. RD

Fair

Over: BEAVER CREEK

2.2NW SKYLN VW/BEAVER CR, Dauphin, PA

Built 1980 Load: 40.8 t ADT: 600

SINGER LANE

Fair

Over: STONEY CREEK

1E DAUPH BORO/STONEY CRK, Dauphin, PA

Built 1998 Load: 40.8 t ADT: 50

MT. ROAD T-547

Fair

Over: POWELL CREEK

1.2E INGLENK/SHOOP/POWELL, Dauphin, PA

Built 1993 Load: 40.8 t ADT: 50

PLEASANTVIEW RD

Fair

Over: BEAVER CREEK

.5W HUMLTN/S.HAN/SWTR/BVR, Dauphin, PA

Built 1954 Load: 40.8 t ADT: 550

SR 321-PA 321

Fair

Over: HIGH PRESSURE GAS LINES

DAHOGA, Elk, PA

Built 1975 Load: 40.8 t ADT: 2,168

SR 1008

Fair

Over: WEST CREEK

RATHBUN, Elk, PA

Built 1963 Load: 40.8 t ADT: 175

T-350 BRIDGE STR.

Fair

Over: ELK CREEK

126FT N OF SR 120 INTER, Elk, PA

Built 1990 Load: 40.8 t ADT: 430

SR 1108 ASHTON RD

Fair

Over: OVER SR 86 EB/WB SO TIER

GREENFIELD TOWNSHIP, Erie, PA

Built 1987 Load: 40.8 t ADT: 172

SR 20 W RIDGE RD

Fair

Over: OVER CROOKED CREEK

SPRINGFIELD TOWNSHIP, Erie, PA

Built 1951 Load: 40.8 t ADT: 3,905

SR 79 SB

Fair

Over: OVER WEST 21ST STREET

CITY OF ERIE, Erie, PA

Built 1982 Load: 40.8 t ADT: 9,771

T-721 RAYMOND ROAD

Fair

Over: W BR FRENCH CREEK

1/2 MI E OF ASHTON RD, Erie, PA

Built 1979 Load: 40.8 t ADT: 57

SR79 RAMP B EX.174

Fair

Over: OVER ELK CREEK

MCKEAN TOWNSHIP, Erie, PA

Built 1969 Load: 40.8 t ADT: 1,081

SR 666 D ZEIS HWY

Fair

Over: OVER EAST HICKORY CK

HICKORY TOWNSHIP, Forest, PA

Built 1961 Load: 40.8 t ADT: 282

T-345

Fair

Over: OVER THE BRANCH

KINGSLEY TOWNSHIP, Forest, PA

Built 1993 Load: 40.8 t ADT: 75

SR2016;Clay Hill R

Fair

Over: Trib. to Antietam Creek

.5 mi NW of Five Forks, Franklin, PA

Built 1960 Load: 40.8 t ADT: 695

SYCAMORE GROVE RD

Fair

Over: CONOCOCHEAGUE CREEK

4NE CHMBRSBRG/CONOCOCHG., Franklin, PA

Built 1991 Load: 40.8 t ADT: 400

NUNNERY ROAD

Fair

Over: NUNNERY CREEK

1 W TOMSTOWN/NUNNERY CRK., Franklin, PA

Built 1982 Load: 40.8 t ADT: 275

HADE RD

Fair

Over: BACK CREEK TRIB

0.7 MI SOUTH OF SR 30, Franklin, PA

Built 1930 Load: 40.8 t ADT: 1,100

T365 Welty Road

Fair

Over: E BR LITTLE ANTIETAM CRE

1.5 SE WBORO/E BR L ANTIE, Franklin, PA

Built 1964 Load: 40.8 t ADT: 400

T-338 Laurel Ridge

Fair

Over: BIG COVE CREEK

2 MI NW DICKEYS MTN, Fulton, PA

Built 1995 Load: 40.8 t ADT: 29

SR 2024

Fair

Over: LITTLE WHITELEY CREEK

MONONGAHELA & CUMBERLAND, Greene, PA

Built 1959 Load: 40.8 t ADT: 209

SR 3007

Fair

Over: GRAYS FORK

CENTER TOWNSHIP, Greene, PA

Built 1957 Load: 40.8 t ADT: 958

GRINNAGE RUN RD

Fair

Over: GARNER RUN

VILLAGE OF WOODRUFF, Greene, PA

Built 1994 Load: 40.8 t ADT: 25

PA 305

Fair

Over: NORFOLK SOUTHERN RR

147 FEET WEST OF SR 4004, Huntingdon, PA

Built 1985 Load: 40.8 t ADT: 2,433

SR 2025

Fair

Over: HILL VALLEY CREEK

0.3 MI. WEST OF TR 747, Huntingdon, PA

Built 1952 Load: 40.8 t ADT: 3,741

SR 1019

Fair

Over: E BR STANDING STONE CRK

0.5 MILE SOUTH OF SR 1021, Huntingdon, PA

Built 1962 Load: 40.8 t ADT: 280

T308 PARKS ROAD

Fair

Over: AUGHWICK CREEK

0.2 MI.S.OF MADDENSVILLE, Huntingdon, PA

Built 1987 Load: 40.8 t ADT: 31

SR0022 EB&WB

Fair

Over: LEAR RD

BLAIRSVILLE NO.3, Indiana, PA

Built 1952 Load: 40.8 t ADT: 26,733

SR0259

Fair

Over: TRIB LITTLE BRUSH CR

BRUSH VALLEY NO.9, Indiana, PA

Built 1941 Load: 40.8 t ADT: 920

SR0422 EB

Fair

Over: SR3033

RUSTIC LODGE ROAD EB, Indiana, PA

Built 1993 Load: 40.8 t ADT: 5,117

SR0422 WB

Fair

Over: SR3033

RUSTIC LODGE ROAD WB, Indiana, PA

Built 1993 Load: 40.8 t ADT: 4,665

SR4020

Fair

Over: MUDLICK RUN

WEST CREEK RD NO.1, Indiana, PA

Built 1937 Load: 40.8 t ADT: 152

SR3056

Fair

Over: CHERRY RUN

HILLTOP ROAD, Indiana, PA

Built 1959 Load: 40.8 t ADT: 654

Showing 8,001-8,050 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.