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

GERMANTOWN PIKE

Fair

Over: BRANCH STONY CREEK

GERMANTOWN-PIKE 3255-H7, Montgomery, PA

Built 1975 Load: 34.5 t ADT: 30,412

Easton Road

Fair

Over: SR0073; Church Road

.5 Mi N PA-309 3370-E6, Montgomery, PA

Built 1933 Load: 34.5 t ADT: 16,804

WASHINGTON LANE

Fair

Over: FROG HOLLOW CREEK

1 MI NE OF SR0611 32C11, Montgomery, PA

Built 1887 Load: 34.5 t ADT: 6,623

VALLEY ROAD

Fair

Over: MEADOWBROOK CREEK

1.2 MI NE SR611 3371-C3, Montgomery, PA

Built 1963 Load: 34.5 t ADT: 8,000

VALLEY ROAD

Fair

Over: MEADOWBROOK CREEK

0.85MI S OF SR0063 3371F2, Montgomery, PA

Built 1963 Load: 34.5 t ADT: 12,160

MIDDLE CREEK ROAD

Fair

Over: MIDDLE CREEK

1.25 MI NW SR 73 2915-F8, Montgomery, PA

Built 1930 Load: 34.5 t ADT: 235

ARCH & PENN STREET

Fair

Over: SAWMILL RUN

900 FT SE.TR 202N 3367F02, Montgomery, PA

Built 1983 Load: 34.5 t ADT: 6,000

MAIN STREET

Fair

Over: SAW MILL RUN

.6 Mi SE US202 3367-F3, Montgomery, PA

Built 1900 Load: 34.5 t ADT: 15,408

SR 3006

Fair

Over: SR 3006 OVER I-80 EB WB

2.8 MI W OF DANVILLE EXIT, Montour, PA

Built 1962 Load: 34.5 t ADT: 223

PA 33NB(LR 1098)

Fair

Over: PA 248(LR 175)

PA 248 INTERCHANGE, Northampton, PA

Built 1972 Load: 34.5 t ADT: 35,392

PA 329 (LR 175)

Fair

Over: CATASAUQUA CREEK

NOR-BATH BOULEVARD, Northampton, PA

Built 1945 Load: 34.5 t ADT: 7,436

E. ALUTA MILL ROAD

Fair

Over: BUSHKILL CREEK

BETWEEN SR 4025 & 1001, Northampton, PA

Built 1984 Load: 34.5 t ADT: 150

BERRY HOLLOW ROAD

Fair

Over: OUGHOUGHTON CREEK

0.2 M. NORTH OF SR 1017, Northampton, PA

Built 1992 Load: 34.5 t ADT: 250

JONES HILL ROAD

Fair

Over: LITTLE BUSHKILL CREEK

1 M. EAST OF PA 115, Northampton, PA

Built 1984 Load: 34.5 t ADT: 200

SR 0405

Fair

Over: N. B. SUSQUEHANNA RIVER

NORTHD/PACKERS ISLAND BR, Northumberland, PA

Built 1988 Load: 34.5 t ADT: 13,307

SR 1005

Fair

Over: DRY RUN

2 MI N OF WATSONTOWN, Northumberland, PA

Built 1948 Load: 34.5 t ADT: 570

SR 2044

Fair

Over: BRANCH OF ZERBE RUN

1 MI SOUTH OF TREVORTON, Northumberland, PA

Built 1961 Load: 34.5 t ADT: 719

SR 3011

Fair

Over: TRIB.TO MAHANTANGO CREEK

2.25 MI S OF LECK KILL, Northumberland, PA

Built 1957 Load: 34.5 t ADT: 69

PA 850; SR 0850

Fair

Over: FISHING CREEK

4.5 MI. W. MARYSVILLE, Perry, PA

Built 1956 Load: 34.5 t ADT: 1,548

SR 49-PA 49

Fair

Over: MIDDLE BR GENESEE RIVER

GOLD, Potter, PA

Built 1947 Load: 34.5 t ADT: 1,393

CPT SHELTON TRAIL

Fair

Over: SUNKEN BRANCH

AT SUNKEN BR RD INTERSECT, Potter, PA

Built 1984 Load: 34.5 t ADT: 5

SR 54 (LR 290)

Fair

Over: READING & NORTHERN RR

0.5 MI. W OF MAHANOY CITY, Schuylkill, PA

Built 1966 Load: 34.5 t ADT: 4,064

I-81 NB (LR 1005)

Fair

Over: PA 125 GOOD SPRING CK.

1 MI. N. OF EXIT 107 (33), Schuylkill, PA

Built 1969 Load: 34.5 t ADT: 10,736

I-81 NB (LR 1005)

Fair

Over: PA 25 (LR 740)

EXIT 112(34) PA 25, Schuylkill, PA

Built 1969 Load: 34.5 t ADT: 11,122

I-81 SB (LR 1005)

Fair

Over: PA 25 (LR 740)

EXIT 112(34) PA 25, Schuylkill, PA

Built 1969 Load: 34.5 t ADT: 10,800

PA 125(LR 465)

Fair

Over: SWATARA CREEK

RAVINE, Schuylkill, PA

Built 1988 Load: 34.5 t ADT: 5,609

SR 1012(LR 53041)

Fair

Over: LITTLE SCHUYLKILL RIVER

VILLAGE OF GINTHERS, Schuylkill, PA

Built 1953 Load: 34.5 t ADT: 431

SR 1017

Fair

Over: READING & NORTHERN RR

EAST END PATCH DELANO, Schuylkill, PA

Built 1946 Load: 34.5 t ADT: 993

RIDGE ROAD

Fair

Over: TRIB. MAHANTANGO CREEK

W. OF ROUGH AND READY, Schuylkill, PA

Built 1930 Load: 34.5 t ADT: 543

SR 4030(LR 161)

Fair

Over: MAHANOY CREEK

0.5 MI.W.OF GIRARDVILLE, Schuylkill, PA

Built 1961 Load: 34.5 t ADT: 2,470

SR 4039 (LR 53055)

Fair

Over: MAHANTANGO CREEK

VILLAGE OF HAAS, Schuylkill, PA

Built 1946 Load: 34.5 t ADT: 274

WHITETAIL LANE

Fair

Over: PINE CREEK

WEST OF FRISBIE, Schuylkill, PA

Built 1930 Load: 34.5 t ADT: 225

SHAFT ST

Fair

Over: MAHANOY CREEK

SHAFT ST IN GILBRTON BORO, Schuylkill, PA

Built 1990 Load: 34.5 t ADT: 200

PA 104

Fair

Over: TRIB NO BR MAHANTANGO CR

1 MI S VILLAGE OF SHADLE, Snyder, PA

Built 1929 Load: 34.5 t ADT: 2,742

SR 235

Fair

Over: SWIFT RUN

VILLAGE OF BENFER, Snyder, PA

Built 1932 Load: 34.5 t ADT: 1,095

SR 2016

Fair

Over: TRIB.TO PENNS CREEK

SELINSGROVE BORO, Snyder, PA

Built 1942 Load: 34.5 t ADT: 916

SR 2047

Fair

Over: MILLER RUN

1.5 MI.N.OF BERLIN, Somerset, PA

Built 1951 Load: 34.5 t ADT: 3,897

US 219 NBL

Fair

Over: PENNSYLVANIA TURNPIKE

OVER PA TURNPIKE, Somerset, PA

Built 1973 Load: 34.5 t ADT: 2,837

US 219 SBL

Fair

Over: PENNSYLVANIA TURNPIKE

OVER PA TURNPIKE, Somerset, PA

Built 1973 Load: 34.5 t ADT: 3,384

PA 985

Fair

Over: TR QUEMAHONING CREEK

GRAY, Somerset, PA

Built 1953 Load: 34.5 t ADT: 2,931

PA 985

Fair

Over: BEAVER DAM RUN

2 MI.S.OF JENNERSTOWN, Somerset, PA

Built 1953 Load: 34.5 t ADT: 2,612

PA 985

Fair

Over: DALTON RUN

1 MI.N.OF SULRHUR SPRING, Somerset, PA

Built 1954 Load: 34.5 t ADT: 2,895

SR 2004

Fair

Over: ELK LICK CREEK

SUMMIT MILLS, Somerset, PA

Built 1990 Load: 34.5 t ADT: 594

T718 MILLER RUN RD

Fair

Over: MILLER RUN

1.5 MI.S.OF SAND PATCH, Somerset, PA

Built 1963 Load: 34.5 t ADT: 33

SR 220

Fair

Over: OVER MARSH CREEK

BOROUGH OF DUSHORE, Sullivan, PA

Built 1925 Load: 34.5 t ADT: 2,452

SR 0081 I-81 NB

Fair

Over: TUNKHANNOCK CREEK

LENOX TWP .1 M N TR 106, Susquehanna, PA

Built 1961 Load: 34.5 t ADT: 10,559

SR 0081 I-81 SB

Fair

Over: SR 0106 TR 106

LENOX TWP OVER TR 106, Susquehanna, PA

Built 1961 Load: 34.5 t ADT: 9,345

SR 0081 I-81 NB

Fair

Over: TROWBRIDGE CREEK

GREAT BEND TWP 1M S PA LN, Susquehanna, PA

Built 1961 Load: 34.5 t ADT: 9,678

SR 0407 TR 407

Fair

Over: E BR TUNKHANNOCK CREEK

LENOX TWP 300 S TR 374, Susquehanna, PA

Built 1952 Load: 34.5 t ADT: 549

US 6

Fair

Over: RAILS TO TRAILS MARSH CK

VILLAGE OF ANSONIA, Tioga, PA

Built 1970 Load: 34.5 t ADT: 3,465

Showing 5,901-5,950 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.