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-840 REDDING RUN

Poor

Over: REDDINGS RUN

BTW SR4006 & T399, Indiana, PA

Built 1956 Load: 45.4 t ADT: 100

T-692 HESS RD

Poor

Over: MILL CREEK

1000 FT NORTH OF SR 772, Lancaster, PA

Built 1930 Load: 45.4 t ADT: 620

QUARRY STREET

Poor

Over: COPLAY CREEK

SOUTH OF PA 329, Lehigh, PA

Built 1920 Load: 45.4 t ADT: 300

FURNACE ROAD

Poor

Over: TROUT CREEK

LEHIGH FURNACE, Lehigh, PA

Built 1935 Load: 45.4 t ADT: 210

PRITCHARDS ROAD

Poor

Over: HUNLOCK CREEK

1 MI NW OF SR 4026, Luzerne, PA

Built 1937 Load: 45.4 t ADT: 155

BRIDGE 1812 T-318

Poor

Over: OVER PYMATUNING CREEK

S.ORANGEVILLE RD. S.PYM., Mercer, PA

Built 1965 Load: 45.4 t ADT: 1,987

T-383 SNOOK ROAD

Poor

Over: BELLTOWN RUN

350 FT EAST OF T707, Mifflin, PA

Built 1941 Load: 45.4 t ADT: 161

CHURCH ROAD

Poor

Over: SEPTA

NR.READING STATION 3370J8, Montgomery, PA

Built 1931 Load: 45.4 t ADT: 8,669

SR 3039(LOBSTOR)

Poor

Over: ALLEN CREEK

W. OF TRENT(LOBSTOR), Somerset, PA

Built 1936 Load: 45.4 t ADT: 88

SR 0040

Poor

Over: CATFISH CREEK

CITY OF WASHINGTON, Washington, PA

Built 1943 Load: 45.4 t ADT: 14,595

SR 0381

Poor

Over: INDIAN CREEK

DONEGAL TOWNSHIP, Westmoreland, PA

Built 1916 Load: 45.4 t ADT: 343

Ice Lake Drive

Poor

Over: Wright Creek

1000FT FROM MIDDLEBURG RD, Luzerne, PA

Built 1963 Load: 45.4 t ADT: 15

SR1036

Poor

Over: COWANSHANNOCK CREEK

RAYBURN TWP-N KITTANNING, Armstrong, PA

Built 1962 Load: 46.3 t ADT: 977

BORDNER ROAD

Poor

Over: LITTLE SWATARA CREEK

1 MI. NO. OF MT. AETNA, Berks, PA

Built 1911 Load: 46.3 t ADT: 83

T-305 E. HANNAH LN

Poor

Over: BALD EAGLE CREEK

585 FT SOUTH INT RT 220, Centre, PA

Built 1925 Load: 46.3 t ADT: 50

SR 3009

Poor

Over: FISHING CREEK

1 MI. S. OF DAUPHIN, Dauphin, PA

Built 1910 Load: 46.3 t ADT: 7,944

PROVIDENCE ROAD

Poor

Over: SEPTA (WEST CHESTER R3)

2MI.NORTH PA.320 34E08, Delaware, PA

Built 1928 Load: 46.3 t ADT: 8,058

T-578 MOREHOUSE RD

Poor

Over: OVER SR 90 EB/WB

GREENE TOWNSHIP, Erie, PA

Built 1959 Load: 46.3 t ADT: 651

T-602 LEONARD RD

Poor

Over: TRIBUTARY TO LOST CREEK

0.1 MI. E OF SR 35 INTER, Juniata, PA

Built 1930 Load: 46.3 t ADT: 300

T-602 LEONARD RD

Poor

Over: TRIBUTARY TO LOST CREEK

0.35 MI E OF INT SR 35, Juniata, PA

Built 1930 Load: 46.3 t ADT: 400

T-700 REAMSTOWN RD

Poor

Over: E BR STONY RUN

600 FT SW OF SR 1051, Lancaster, PA

Built 1924 Load: 46.3 t ADT: 1,035

RAMP AB

Poor

Over: PA TPK (I-476)

LEHIGH VALLEY INTERCHANGE, Lehigh, PA

Built 1956 Load: 46.3 t ADT: 21,503

HARRISBURG RUN RD

Poor

Over: HARRISBURG RUN

1.5 MI NORTH OF SR 346, McKean, PA

Built 1920 Load: 46.3 t ADT: 150

BRIDGE 2904 T-546

Poor

Over: OVER LT.NESHANNOCK W. BR

BEND RD. WILMINGTON TWP., Mercer, PA

Built 1956 Load: 46.3 t ADT: 603

US 11&15; STATE.RD

Poor

Over: FISHING CREEK

MARYSVILLE BORO, Perry, PA

Built 1936 Load: 46.3 t ADT: 18,406

SR 49-PA 49

Poor

Over: PEET BROOK

COLESBURG, Potter, PA

Built 1930 Load: 46.3 t ADT: 1,289

GARRETSON STREET

Poor

Over: WEST BRANCH FREEMAN RUN

ON GARRETSON ST., Potter, PA

Built 1975 Load: 46.3 t ADT: 800

SR 3003

Poor

Over: DRAKE RUN

DRAKETOWN, Somerset, PA

Built 1908 Load: 46.3 t ADT: 235

SR 3010

Poor

Over: MIDDLE CREEK

2 MI.S.OF LAVANSVILLE, Somerset, PA

Built 1926 Load: 46.3 t ADT: 183

SR 4073

Poor

Over: SR 0056

ALLEGHNEY TOWNSHIP, Westmoreland, PA

Built 1953 Load: 46.3 t ADT: 366

SHADY LANE T-503

Poor

Over: JACKS RUN

100FT SE OF SR 0119, Westmoreland, PA

Built 1985 Load: 46.3 t ADT: 2,250

PA 33 NB(LR1098)

Poor

Over: BUSHKILL CREEK

0.5 MI S OF PA 191 EXIT, Northampton, PA

Built 2004 Load: 46.3 t ADT: 31,243

T-337 Narrow Lane

Poor

Over: EVITTS CREEK

2.5 MI.SE.OF CENTERVILLE, Bedford, PA

Built 1956 Load: 47.2 t ADT: 40

T484 SICKL CR BK R

Poor

Over: SINKING RUN

2 MI.SW.OF CULP, Blair, PA

Built 1993 Load: 47.2 t ADT: 250

PA TPK (I-276)

Poor

Over: T-346 BLOMSDAL RD

EAST OF DELAWARE VAL INTG, Bucks, PA

Built 1954 Load: 47.2 t ADT: 46,280

T-670 HINKSON ROAD

Poor

Over: OVER LITTLE SUGAR BRANCH

1.2 MI. SW. FRENCHTOWN, Crawford, PA

Built 1900 Load: 47.2 t ADT: 50

PA 114;Lisburn Rd

Poor

Over: MILL RACE

LISBURN, Cumberland, PA

Built 1906 Load: 47.2 t ADT: 4,717

SR3003

Poor

Over: ELDERS RUN

ELDERS RUN, Indiana, PA

Built 1934 Load: 47.2 t ADT: 411

CENTER ST.

Poor

Over: TROUT CREEK

EMERALD BRIDGE, Lehigh, PA

Built 1961 Load: 47.2 t ADT: 100

SR 3002(LR 45052)

Poor

Over: AQUASHICOLA CREEK

1 MI.E.OF SR 3001, Monroe, PA

Built 1927 Load: 47.2 t ADT: 340

FORNANCE STREET

Poor

Over: SAWMILL RUN

1600 FT SE.TR202N 3367-H1, Montgomery, PA

Built 1932 Load: 47.2 t ADT: 8,260

DREHERSVILLE RD

Poor

Over: PINE CREEK

DREHERSVLL.RD.IN DEERLAKE, Schuylkill, PA

Built 1925 Load: 47.2 t ADT: 800

T-621 REYNOLDS RUN

Poor

Over: OVER REYNOLDS RUN

PINE GROVE TOWNSHIP, Warren, PA

Built 1960 Load: 47.2 t ADT: 65

T-377 EUREKA ROAD

Poor

Over: OVER CALDWELL CREEK W.BR

ELDRED TOWNSHIP, Warren, PA

Built 1997 Load: 47.2 t ADT: 70

WEST JEFFERSON RD

Poor

Over: THORN CREEK

25 FROM INT W/T562, Butler, PA

Built 1915 Load: 47.2 t ADT: 300

BRIDGE 2450 T-397

Poor

Over: OVER HARTHEGIG RUN

LACKAWANNOCK TWP, Mercer, PA

Built 1963 Load: 47.2 t ADT: 220

MILLTOWN ROAD

Poor

Over: PLUM CREEK

1/4 MI E OF SR 2058, Allegheny, PA

Built 1979 Load: 48.1 t ADT: 1,935

WIBLE RUN RD

Poor

Over: WIBLE RUN CREEK

WB01 WIBLE RUN RD NO 1, Allegheny, PA

Built 1987 Load: 48.1 t ADT: 6,583

SR4009

Poor

Over: HART RUN

BRADYS BEND NO.12, Armstrong, PA

Built 1953 Load: 48.1 t ADT: 877

DON STREET

Poor

Over: BEAVER RUN

300 FT NW OF SR 53, Clearfield, PA

Built 1955 Load: 48.1 t ADT: 250

Showing 23,051-23,100 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.