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

NEW SECOND STREET

Fair

Over: BRANCH TACONY CREEK

CHELTENHAM 3371B10, Montgomery, PA

Built 1938 Load: 33.6 t ADT: 5,664

NEW US 202

Fair

Over: SCHUYL.RIV NSRC PA23 SEP

DANNEHOWER BRIDGE 3367D03, Montgomery, PA

Built 1968 Load: 33.6 t ADT: 25,273

EGYPT ROAD

Fair

Over: MINE RUN

AUDUBON 27F5/3253K9, Montgomery, PA

Built 1951 Load: 33.6 t ADT: 18,002

KELLER CREAMERY RD

Fair

Over: INDIAN CREEK

KELLER RD.RTE113 3030-K1, Montgomery, PA

Built 1905 Load: 33.6 t ADT: 1,173

GERMANTOWN PIKE

Fair

Over: FIVE MILE RUN

2 Mi W of US-202 3255-D6, Montgomery, PA

Built 1887 Load: 33.6 t ADT: 23,102

BRIDGE STREET

Fair

Over: SCHUYLKILL CANAL

SR-29 BRIDGE ST. 3252-J9, Montgomery, PA

Built 1917 Load: 33.6 t ADT: 11,680

SWEDESFORD ROAD

Fair

Over: WISSAHICKON CREEK

0.4MI NW OR SR0202 22K08, Montgomery, PA

Built 1910 Load: 33.6 t ADT: 1,944

FAUST ROAD

Fair

Over: GOSHENHOPPEN CREEK

1.2 MI NE OF SR73 3029-A2, Montgomery, PA

Built 2004 Load: 33.6 t ADT: 500

PA TPK (I-276)

Fair

Over: SR 3003

GEO WASHINGTON MEMORIALPK, Montgomery, PA

Built 1954 Load: 33.6 t ADT: 74,921

COUNTY LINE ROAD

Fair

Over: PA TPK (I-276)

SOUTH OF SOUTHAMPTON, Montgomery, PA

Built 1954 Load: 33.6 t ADT: 22,231

OAK STREET

Fair

Over: SAW MILL RUN

1500 SE US-202N 3367-G2, Montgomery, PA

Built 1932 Load: 33.6 t ADT: 5,600

RAMP M 76W TO 476S

Fair

Over: I-76(EB) & RAMPS K & R

CONSHOHOCKEN INTER.35C05, Montgomery, PA

Built 1976 Load: 33.6 t ADT: 3,270

SR 44

Fair

Over: MID BR CHILLISQUAQUE CR

2 MI E OF EXCHANGE, Montour, PA

Built 1932 Load: 33.6 t ADT: 705

I-80 EB

Fair

Over: OVER SR 3003

5.9 MI. W DANVILLE EXIT, Montour, PA

Built 1963 Load: 33.6 t ADT: 12,929

I-80 WBL

Fair

Over: OVER SR 3003

5.9 MI. W DANVILLE EXIT, Montour, PA

Built 1963 Load: 33.6 t ADT: 13,173

US 22 (LR 772)

Fair

Over: CHRISTIAN SPRING RD.

OVER CHRISTIAN SPRINGS RD, Northampton, PA

Built 1954 Load: 33.6 t ADT: 86,673

US 22 (LR 772)

Fair

Over: PA 191 & MONOCACY CR.

PA 191 INTERCHANGE, Northampton, PA

Built 1954 Load: 33.6 t ADT: 86,673

PA 33 SB(LR 1098)

Fair

Over: PA 248 (LR 175)

PA 248 EXIT, Northampton, PA

Built 1972 Load: 33.6 t ADT: 31,190

PA 512 (LR 48046)

Fair

Over: MONOCACY CREEK

BETH-BATH PIKE, Northampton, PA

Built 1923 Load: 33.6 t ADT: 9,850

PA 946 (LR 752)

Fair

Over: TRIB. HOKENDAUQUA CREEK

MOUNTAIN VIEW DRIVE, Northampton, PA

Built 1932 Load: 33.6 t ADT: 3,436

SR 4005 (LR 48052)

Fair

Over: HOKENDAUQUA CREEK

N.HOKENDAUQUA ROAD, Northampton, PA

Built 1960 Load: 33.6 t ADT: 520

WILLOW BROOK ROAD

Fair

Over: CATASAUQUA CREEK

1 MILE WEST OF SR 3017, Northampton, PA

Built 1958 Load: 33.6 t ADT: 200

TOWNSHIP LINE ROAD

Fair

Over: MONOCACY CREEK

WEST OF SR 3015, Northampton, PA

Built 1991 Load: 33.6 t ADT: 500

S.R. 11

Fair

Over: W. B. SUSQUEHANNA RIVER

NORTHD BORO BLUE HILL BR, Northumberland, PA

Built 1925 Load: 33.6 t ADT: 10,050

SR 61

Fair

Over: OVER SHAMOKIN CR.

4 MI N OF SHAMOKIN, Northumberland, PA

Built 1926 Load: 33.6 t ADT: 16,425

SR 61

Fair

Over: OVER BENNYS RUN

1 MI N OF WEIGH SCALES, Northumberland, PA

Built 1947 Load: 33.6 t ADT: 12,759

SR 147

Fair

Over: OVER S.R. 45

0.5 MI E OF MONTANDON, Northumberland, PA

Built 1971 Load: 33.6 t ADT: 9,150

SR 4007

Fair

Over: OVER SHAMOKIN CREEK

3 MI.E OF SUNBURY, Northumberland, PA

Built 1974 Load: 33.6 t ADT: 370

SR 4026

Fair

Over: BENNYS RUN

1 MI W.OF WEIGH SCALES, Northumberland, PA

Built 1967 Load: 33.6 t ADT: 851

PEACE VALLEY ROAD

Fair

Over: PLUM CREEK

1 MI. SE OF HAMILTON, Northumberland, PA

Built 1920 Load: 33.6 t ADT: 100

T-482

Fair

Over: SCHWABEN CREEK

LECK KILL, Northumberland, PA

Built 1897 Load: 33.6 t ADT: 85

SHAMOKIN STREET

Fair

Over: SHAMOKIN CREEK

SHAMOKIN CITY, Northumberland, PA

Built 1916 Load: 33.6 t ADT: 1,600

BACK HOLLOW RD

Fair

Over: SHAEFFER RUN

2.5 SE N GRMNTWN/SHAEFFER, Perry, PA

Built 1998 Load: 33.6 t ADT: 50

SR 144-PA 144

Fair

Over: PINE CREEK

GALETON BORO, Potter, PA

Built 1965 Load: 33.6 t ADT: 1,413

SR 4021

Fair

Over: HONEOYE CREEK

SHINGLEHOUSE, Potter, PA

Built 1938 Load: 33.6 t ADT: 678

I-81 SB (LR 1005)

Fair

Over: ALTAMONT BOULEVARD

SCH. MALL RD. - EXIT 124, Schuylkill, PA

Built 1967 Load: 33.6 t ADT: 10,874

SR 0011 & 0015 NB

Fair

Over: NORFOLK SOUTHERN RR

BORO OF SELINSGROVE, Snyder, PA

Built 1976 Load: 33.6 t ADT: 10,724

SR 0011 & 0015 SB

Fair

Over: NORFOLK SOUTHERN RR

BORO OF SELINSGROVE, Snyder, PA

Built 1976 Load: 33.6 t ADT: 10,072

US 219 NBL

Fair

Over: SR 4010

OVER SR 4010, Somerset, PA

Built 1969 Load: 33.6 t ADT: 6,196

PA 281

Fair

Over: WEST BR COXES CREEK

1 MI.S.OF SOMERSET, Somerset, PA

Built 1997 Load: 33.6 t ADT: 4,070

PA 403

Fair

Over: BENS CREEK

BENS CREEK, Somerset, PA

Built 1953 Load: 33.6 t ADT: 4,899

PA 601

Fair

Over: TR.QUEMAHONING CREEK

0.5 MILE NORTH OF US 219, Somerset, PA

Built 1969 Load: 33.6 t ADT: 857

PA 653

Fair

Over: LAUREL HILL CREEK

1.8 MI.W.NEW LEXINGTON, Somerset, PA

Built 1934 Load: 33.6 t ADT: 961

T864 WHITE CREEK R

Fair

Over: WHITES CREEK

3 MILE E.OF LISTONBURG, Somerset, PA

Built 1942 Load: 33.6 t ADT: 73

SR 4041

Fair

Over: STONYCREEK RIVER

KRINGS, Somerset, PA

Built 1937 Load: 33.6 t ADT: 1,951

SR 0087

Fair

Over: OGDONIA CREEK

2 MI S OF HILLSGROVE, Sullivan, PA

Built 1958 Load: 33.6 t ADT: 702

S.R. 487

Fair

Over: OVER MEHOOPANY CR.

1 MI S OF RICKETS, Sullivan, PA

Built 1957 Load: 33.6 t ADT: 763

SR 0081 I-81 SB

Fair

Over: SR 0492 TR 492

N MILFORD TWP OVER TR 492, Susquehanna, PA

Built 1961 Load: 33.6 t ADT: 11,808

SR 0171 TR 171

Fair

Over: D & H RR ABANDONED

CLIFFORD TP 400 N SR2010, Susquehanna, PA

Built 1969 Load: 33.6 t ADT: 1,632

SR 549

Fair

Over: TRIBUTARY TO MILL CREEK

2 MI SW OF ROSEVILLE, Tioga, PA

Built 1926 Load: 33.6 t ADT: 997

Showing 5,501-5,550 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.