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

T-461

Fair

Over: TRIB SWATARA CREEK

1E.WATER WORKS/TR.SWATR., Lebanon, PA

Built 1982 Load: 18.1 t ADT: 200

SR 4002 COAL HILL

Fair

Over: BIG RUN

WEST SALEM TOWNSHIP, Mercer, PA

Built 1977 Load: 18.1 t ADT: 202

BRIDGE 3208 T-337

Fair

Over: OVER BLACK RUN

AMSTERDAM RD LIBERTY TWP., Mercer, PA

Built 1972 Load: 18.1 t ADT: 521

BRIDGE 204 T-871

Fair

Over: OVER SHENANGO RIVER BR.

GARDNER HILL SUGAR GROVE, Mercer, PA

Built 1934 Load: 18.1 t ADT: 23

KEOKEE CHAPEL LN

Fair

Over: PARADISE CREEK

0.2 M.N OF POCONO GARDENS, Monroe, PA

Built 1957 Load: 18.1 t ADT: 157

T-537 OLD MILL RD

Fair

Over: POCONO CREEK

TANNERSVILLE, Monroe, PA

Built 1957 Load: 18.1 t ADT: 500

COVERED BRIDGE RD.

Fair

Over: Crow Creek

.3 Mi N of PA-23 3366-J4, Montgomery, PA

Built 1965 Load: 18.1 t ADT: 200

TRAVELER AVENUE

Fair

Over: SAUCON CREEK

W OF PA 412 N OF I-78, Northampton, PA

Built 1952 Load: 18.1 t ADT: 200

SR 61

Fair

Over: SHAMOKIN CREEK

CITY OF SUNBURY, Northumberland, PA

Built 1933 Load: 18.1 t ADT: 9,706

WARRIOR RUN BLVD.

Fair

Over: WARRIOR RUN

W OF TURBOTVILLE, Northumberland, PA

Built 1920 Load: 18.1 t ADT: 1,200

US 22/322; SR 0022

Fair

Over: SR 8039; EB & WB RAMP

AMITY HALL, Perry, PA

Built 1963 Load: 18.1 t ADT: 32,055

SR 8017 (RAMP M)

Fair

Over: PA 309

I-81 RAMP M OVER PA 309, Schuylkill, PA

Built 1967 Load: 18.1 t ADT: 4,728

PA 160

Fair

Over: SEESE RUN

WINDBER, Somerset, PA

Built 1962 Load: 18.1 t ADT: 3,460

SR 2014

Fair

Over: CASSELMAN RIVER

BOYNTON, Somerset, PA

Built 1962 Load: 18.1 t ADT: 386

T-756 PASO FINO RD

Fair

Over: LAUREL RUN

4 MI.SW.OF GLENCOE, Somerset, PA

Built 1927 Load: 18.1 t ADT: 51

SR 220

Fair

Over: OVER MUNCY CREEK

VILLAGE OF MUNCY VALLEY, Sullivan, PA

Built 1975 Load: 18.1 t ADT: 3,209

T822 LOVERS LANE

Fair

Over: TROWBRIDGE CREEK

.5 MI NORTH OF GREAT BEND, Susquehanna, PA

Built 1920 Load: 18.1 t ADT: 100

T-502 (NEWHART RD)

Fair

Over: MIDDLE BR. WYALUSING CR.

.3 MILES N.E. OF LAWTON, Susquehanna, PA

Built 1920 Load: 18.1 t ADT: 100

T-323 KASSON ROAD

Fair

Over: MARVIN CREEK

1500 FT NW OF US 6, McKean, PA

Built 1998 Load: 18.1 t ADT: 50

CAMP MENSCH MILL

Fair

Over: W. BR. PERKIOMEN CREEK

SOUTH OF HUFFS CHURCH, Berks, PA

Built 1970 Load: 18.1 t ADT: 100

NJTPK(I-95 PA EXT)

Fair

Over: DELAWARE RIVER & ROADS

2.25 MI E OF TPK&RT130 JC, Armstrong, PA

Built 1956 Load: 18.5 t ADT: 41,551

VA. AVE. STA79+54

Fair

Over: MUDDY RUN

NORTH OF B-9 ROAD, Franklin, PA

Built 1943 Load: 18.8 t ADT: 40

U.S. ROUTE 209

Fair

Over: SAND HILL CREEK

AT JUNCTION WITH COMMUNIT, Pike, PA

Built 1940 Load: 19.0 t ADT: 4,658

RANCH TRAIL

Fair

Over: FRIENDS CREEK

CARROLL VALLEY BOROUGH, Adams, PA

Built 1980 Load: 19.1 t ADT: 200

PENN LINCOLN PY

Fair

Over: RODI ROAD NB&SB

1/2 MI. N.E. OF SR 2048, Allegheny, PA

Built 1962 Load: 19.1 t ADT: 54,146

MIFFLIN ROAD

Fair

Over: GLASS RUN ROAD

AT GLENWOOD INTERCHANGE, Allegheny, PA

Built 1963 Load: 19.1 t ADT: 8,254

MANSFIELD BLVD

Fair

Over: CHARTIERS CREEK

O/CHARTIERS CR SR 3048, Allegheny, PA

Built 1967 Load: 19.1 t ADT: 6,873

WILDWOOD RD

Fair

Over: MONTOUR RUN

100WEST OF SR 4065, Allegheny, PA

Built 1980 Load: 19.1 t ADT: 13,886

WALTHER LN

Fair

Over: GRASSER RUN

123001 UPPER ST CLAIR TWP, Allegheny, PA

Built 1976 Load: 19.1 t ADT: 50

LINCOLN AV

Fair

Over: WASHINGTON BLVD (RT 8)

048 Lincoln Ave Bridge, Allegheny, PA

Built 1905 Load: 19.1 t ADT: 7,850

GOETTMAN ST

Fair

Over: HILLSIDE

125 Goettman St Bridge, Allegheny, PA

Built 1950 Load: 19.1 t ADT: 180

OLD WILLIAMPENN HW

Fair

Over: THOMPSON RUN

446001 OLD WILLM PENN HWY, Allegheny, PA

Built 1988 Load: 19.1 t ADT: 200

RIDGEWOOD AV

Fair

Over: CENTER AVENUE

474001 OVER CENTER AVE, Allegheny, PA

Built 1940 Load: 19.1 t ADT: 500

PA 96

Fair

Over: GLADDENS RUN

0.4 MILE NORTH OF SR 3001, Bedford, PA

Built 1927 Load: 19.1 t ADT: 2,499

T570 PINE KNOB RD

Fair

Over: BOBS CREEK

1 MI.W.OF OSTERBURG, Bedford, PA

Built 1936 Load: 19.1 t ADT: 41

T701 Queen Road

Fair

Over: BEAVERDAM CREEK

QUEEN, Bedford, PA

Built 1915 Load: 19.1 t ADT: 21

SR 222 NB(LR 157)

Fair

Over: SACONY CREEK

NEAR PA737 EXIT, Berks, PA

Built 1972 Load: 19.1 t ADT: 11,547

LITTLE RND. TOP RD

Fair

Over: MAIDEN CREEK

GREENAWALT BRIDGE, Berks, PA

Built 1932 Load: 19.1 t ADT: 249

VALLEY ROAD

Fair

Over: MONOCACY CREEK

MONOCACY BRIDGE, Berks, PA

Built 1912 Load: 19.1 t ADT: 276

GUN CLUB RD

Fair

Over: MILL CREEK

1 M E OF SR 737, Berks, PA

Built 1990 Load: 19.1 t ADT: 150

JEFFERSON STREET

Fair

Over: FURNACE CREEK

Near Village of Oley, Berks, PA

Built 1925 Load: 19.1 t ADT: 350

HOUCK ROAD

Fair

Over: CLOVER CREEK

SOUTH OF FLEETWOOD, Berks, PA

Built 1973 Load: 19.1 t ADT: 588

T-668 WERNERSVL.RD

Fair

Over: CACOOSING CREEK

1 M.NE OF FRITZTOWN, Berks, PA

Built 1975 Load: 19.1 t ADT: 2,253

US 22 WBL

Fair

Over: US 22 E&WB;PA764 N&SB

2.5 MI.N.OF DUNCANSVILLE, Blair, PA

Built 1982 Load: 19.1 t ADT: 9,098

WEST 14TH AVENUE

Fair

Over: SPRING RUN

WEST 14TH AVE JUNIATA, Blair, PA

Built 1939 Load: 19.1 t ADT: 1,420

37TH STREET

Fair

Over: NORFOLK SOUTHERN RR

37 TH ST ALTOONA, Blair, PA

Built 1985 Load: 19.1 t ADT: 4,878

TR-459 (CO.BR.#4)

Fair

Over: DURELL CREEK

1.3 MI. EAST OF DURELL, Bradford, PA

Built 1874 Load: 19.1 t ADT: 50

OLD BETHLEHEM ROAD

Fair

Over: KIMPLES CREEK

STRAWNTOWN: HAYCOCK 9A10, Bucks, PA

Built 1922 Load: 19.1 t ADT: 1,594

KINTNER ROAD

Fair

Over: GALLOWS RUN

NOCKAMIXON TWP. 2584-A2, Bucks, PA

Built 1877 Load: 19.1 t ADT: 50

COVER BRIDGE RD

Fair

Over: PRINCESS CREEK

LITTLE GAP COVERED BRIDGE, Carbon, PA

Built 1880 Load: 19.1 t ADT: 750

Showing 551-600 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.