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-879 CHURCH ROAD

Fair

Over: PINE CREEK

W.OF SR 4015 NR.FEARNOT, Schuylkill, PA

Built 1939 Load: 32.7 t ADT: 200

T-391 OLD SWOPES

Fair

Over: SWATARA CREEK

INTERS.OF T390&T635, Schuylkill, PA

Built 1933 Load: 32.7 t ADT: 150

CATAWISSA RD

Fair

Over: BEAVER CREEK

3.8 M.S OF TUSCARORA, Schuylkill, PA

Built 1920 Load: 32.7 t ADT: 700

PINE CREEK DRIVE

Fair

Over: PINE CREEK

1.8 MI EAST OF ORWIGSBURG, Schuylkill, PA

Built 1935 Load: 32.7 t ADT: 150

COLD SPRING

Fair

Over: MAHONING CREEK

NORTH OF 443, Schuylkill, PA

Built 1935 Load: 32.7 t ADT: 200

WILLIAM STREET

Fair

Over: MAHANOY CREEK

WILLIAMS ST.N.OF OAK ST., Schuylkill, PA

Built 1920 Load: 32.7 t ADT: 300

MARKET STREET

Fair

Over: MAHANOY CREEK

MARKET ST.1 BLK.S.OF SR54, Schuylkill, PA

Built 1935 Load: 32.7 t ADT: 100

SR 235

Fair

Over: MIDDLE CREEK

1.2 MI N OF BEAVER SPRING, Snyder, PA

Built 1930 Load: 32.7 t ADT: 1,095

SR 522

Fair

Over: TRIB TO MIDDLE CREEK

VILLAGE OF BEAVER SPRINGS, Snyder, PA

Built 1929 Load: 32.7 t ADT: 5,271

SR 2004

Fair

Over: T.TO MAHANTANGO CREEK

0.2 MI NORTH OF PALLAS, Snyder, PA

Built 1922 Load: 32.7 t ADT: 211

CAWLEY HILL RD

Fair

Over: SILVER CREEK

1 MI SOUTH OF VERDILLA, Snyder, PA

Built 1949 Load: 32.7 t ADT: 244

PAXTONVILLE ROAD

Fair

Over: TRIBUTARY MIDDLE CREEK

VILLAGE OF PAXTONVILLE, Snyder, PA

Built 1972 Load: 32.7 t ADT: 2,530

QUARRY RD

Fair

Over: TRIB MIDDLE CREEK

1 MI W OF PAXTONVILLE, Snyder, PA

Built 1950 Load: 32.7 t ADT: 645

SR 4007 & TWP.RD.

Fair

Over: KERN RUN

2 MI N OF BEAVERTOWN, Snyder, PA

Built 1922 Load: 32.7 t ADT: 422

SR 4012

Fair

Over: KREB GAP RUN

4.5 MI W OF BENFER, Snyder, PA

Built 1939 Load: 32.7 t ADT: 492

CREEK ROAD

Fair

Over: TRIBUTARY MIDDLE CREEK

4 MI E.OF BENFER, Snyder, PA

Built 1944 Load: 32.7 t ADT: 356

CREEK ROAD

Fair

Over: TRIBUTARY MIDDLE CREEK

4 MI W OF MIDDLEBURG BORO, Snyder, PA

Built 1948 Load: 32.7 t ADT: 356

CREEK ROAD

Fair

Over: TRIBUTARY MIDDLE CREEK

4 MI W OF MIDDLEBURG BORO, Snyder, PA

Built 1948 Load: 32.7 t ADT: 356

SR 4018

Fair

Over: TRIBUTARY PENNS CREEK

2 MI W OF CENTERVILLE, Snyder, PA

Built 1963 Load: 32.7 t ADT: 1,495

T-443 RIDGE ROAD

Fair

Over: TRIB.OF MIDDLE CR

0.75 MI.NE OF MIDDLEBURG, Snyder, PA

Built 1930 Load: 32.7 t ADT: 50

T-489 JACKSON ROAD

Fair

Over: WOLF RUN

2 MI SW OF KRATZERVILLE, Snyder, PA

Built 1985 Load: 32.7 t ADT: 100

T626 CRITCHFIELD R

Fair

Over: US 219

3.6 MILE NORTH OF TR 281, Somerset, PA

Built 1969 Load: 32.7 t ADT: 37

US 219 SBL

Fair

Over: SR 4010

OVER SR 4010, Somerset, PA

Built 1969 Load: 32.7 t ADT: 6,193

US 219 NBL

Fair

Over: SR 4035

OVER SR 4035, Somerset, PA

Built 1969 Load: 32.7 t ADT: 6,196

SR 2019

Fair

Over: WILLS CREEK

FAIRHOPE, Somerset, PA

Built 1961 Load: 32.7 t ADT: 136

SR 4004

Fair

Over: US 219

.25 MI.N.OF GIDEON, Somerset, PA

Built 1969 Load: 32.7 t ADT: 322

SR 4015

Fair

Over: TR.QUEMAHONING CREEK

1 MI.S.OF EDIE, Somerset, PA

Built 1987 Load: 32.7 t ADT: 174

PA TPK (I-76)

Fair

Over: TRIB. TO STONEY CREEK

WEST OF ALLEGHENY TUNNEL, Somerset, PA

Built 1939 Load: 32.7 t ADT: 29,452

PA TPK (I-76)

Fair

Over: THREE LICK RUN

NEAR NEW BALTIMORE, Somerset, PA

Built 1939 Load: 32.7 t ADT: 31,200

T-679 BELLTOWN RD

Fair

Over: N.BR.QUEMAHONING CREEK

2.5 MI.NW.OF SIPESVILLE, Somerset, PA

Built 1940 Load: 32.7 t ADT: 20

T648 READING MINE

Fair

Over: BEAVER DAM CREEK

1 MI.SW.OF STOYSTOWN, Somerset, PA

Built 1910 Load: 32.7 t ADT: 50

T624 HILLTOP ROAD

Fair

Over: WELLS CREEK

FRIEDENS HILLTOP ROAD, Somerset, PA

Built 1928 Load: 32.7 t ADT: 103

T-357 KENNELS MILL

Fair

Over: GLADDENS RUN

4 MI.N.OF WELLERSBURG, Somerset, PA

Built 1912 Load: 32.7 t ADT: 150

CLARK STREET

Fair

Over: DIXIE RUN

HOOVERSVILLE BOROUGH, Somerset, PA

Built 1976 Load: 32.7 t ADT: 150

NORTH SHORE TRAIL

Fair

Over: CALENDARS RUN

INDIAN LAKE BOROUGH, Somerset, PA

Built 1997 Load: 32.7 t ADT: 20

SR 0087

Fair

Over: OVER SLAB RUN

1 MI N OF HILLSGROVE, Sullivan, PA

Built 1941 Load: 32.7 t ADT: 602

PA 87

Fair

Over: LITTLE LOYALSOCK CREEK

BORO OF DUSHORE, Sullivan, PA

Built 1967 Load: 32.7 t ADT: 2,498

SR 0220

Fair

Over: OVER OUTLET CREEK

VILLAGE OF SONESTOWN, Sullivan, PA

Built 1973 Load: 32.7 t ADT: 2,415

S.R. 220

Fair

Over: MILL CREEK

0.2 MI N OF LAPORTE, Sullivan, PA

Built 1929 Load: 32.7 t ADT: 2,466

S.R. 487

Fair

Over: TR.OF MEHOOPANY CREEK

.5 N BENTON AFB-COLLEY T., Sullivan, PA

Built 1958 Load: 32.7 t ADT: 763

SR 1002

Fair

Over: LOYALSOCK CREEK

3.4 MI EAST OF LOPEZ, Sullivan, PA

Built 1984 Load: 32.7 t ADT: 115

SR 1002

Fair

Over: TR.TO S.BR.OF LOYALSOCK

0.5 MI N OF SHADY NOOK, Sullivan, PA

Built 1941 Load: 32.7 t ADT: 60

SR 2003

Fair

Over: BLOODY RUN

0.7 MI NW OF ELK GROVE, Sullivan, PA

Built 1937 Load: 32.7 t ADT: 105

SR 2007

Fair

Over: OVER LONG BROOK

1 MI S OF NORDMONT, Sullivan, PA

Built 1962 Load: 32.7 t ADT: 33

SR 2008

Fair

Over: OVER MUNCY CREEK

1.5 MI EAST OF NORDMONT, Sullivan, PA

Built 1974 Load: 32.7 t ADT: 22

DAVIDSON TWP.T-337

Fair

Over: CHERRY RUN

0.5 MI. SE OF NORDMONT, Sullivan, PA

Built 1977 Load: 32.7 t ADT: 50

SR 0081 I-81 SB

Fair

Over: EAST BR TUNKHANNOCK CR

LENOX TWP .2 M N TR 374, Susquehanna, PA

Built 1961 Load: 32.7 t ADT: 8,939

SR 0081 I-81

Fair

Over: SALT LICK CREEK

N MILFORD BOR 1M N TR 492, Susquehanna, PA

Built 1961 Load: 32.7 t ADT: 23,044

SR 0171 TR 171

Fair

Over: STARUCCA CREEK

THOMPSON TWP .1M S SR1001, Susquehanna, PA

Built 1938 Load: 32.7 t ADT: 678

SR 0374 TR 374

Fair

Over: E BRANCH TUNKHANNOCK CRK

CLIFFORD TP .5 M W TR 106, Susquehanna, PA

Built 1965 Load: 32.7 t ADT: 1,345

Showing 4,851-4,900 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.