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

MID-COUNTY EXWY.SB

Fair

Over: MATSONFORD/DEHAVEN RDS.

W. CONSHOHOCKEN 3367J10, Montgomery, PA

Built 1976 Load: 29.9 t ADT: 54,564

PARK ROAD/2917D06

Fair

Over: PERKIOMEN CREEK

GREEN LANE RESER., Montgomery, PA

Built 1931 Load: 29.9 t ADT: 2,112

CHURCH ROAD

Fair

Over: TOOKANY CREEK

E READING RR 3370J08, Montgomery, PA

Built 1932 Load: 29.9 t ADT: 8,669

GERYVILLE PIKE

Fair

Over: STONY RUN

950 FT W OF SR 1036, Montgomery, PA

Built 1965 Load: 29.9 t ADT: 5,888

SR 2009 LR 46095

Fair

Over: PA TPK (I-276)

SOUTHEAST OF HATBORO, Montgomery, PA

Built 1954 Load: 29.9 t ADT: 13,179

SR 45

Fair

Over: OVER BR. OF BEAVER RUN

4 MI W OF MOORESBURG, Montour, PA

Built 1951 Load: 29.9 t ADT: 3,238

SR 254

Fair

Over: OVER MUD CR.

BORO OF WASHINGTONVILLE, Montour, PA

Built 1946 Load: 29.9 t ADT: 1,827

SR 1007

Fair

Over: OVER MUD CREEK

1.5 MI S STRAWBERRY RIDGE, Montour, PA

Built 1936 Load: 29.9 t ADT: 114

US 22 (LR 772)

Fair

Over: T-575(JACKSONVILLE ROAD)

1 MI.W.OF PA.512, Northampton, PA

Built 1954 Load: 29.9 t ADT: 81,790

SR2027 HECKTOWN RD

Fair

Over: US 22 (LR 772)

HECKTOWN RD. OVER US.22, Northampton, PA

Built 1954 Load: 29.9 t ADT: 6,287

PA 145 (LR 175)

Fair

Over: BERTSCH CREEK

RIVERVIEW DRIVE, Northampton, PA

Built 1923 Load: 29.9 t ADT: 5,784

PA 191 (LR 48035)

Fair

Over: TRIB.TO MARTINS CREEK

200FT NORTH OF BANGOR, Northampton, PA

Built 1961 Load: 29.9 t ADT: 1,415

PA 248 (LR 471)

Fair

Over: INDIAN CREEK

INDIAN TRAIL PARK, Northampton, PA

Built 1929 Load: 29.9 t ADT: 8,777

SR 3017 (LR 564)

Fair

Over: CATASAUQUA CREEK

WEAVERSVILLE, Northampton, PA

Built 1947 Load: 29.9 t ADT: 12,475

NORTHAMPTON ST.

Fair

Over: WEST MONOCACY CREEK

0.1 M. WEST OF PA 987, Northampton, PA

Built 1934 Load: 29.9 t ADT: 700

SR 0405

Fair

Over: TRIB WB SUSQEHANNA RVR

2 MI N OF NORTHUMBERLAND, Northumberland, PA

Built 1938 Load: 29.9 t ADT: 13,918

SR 225

Fair

Over: OVER FIDDLERS RUN

1 MI S OF MANDATA, Northumberland, PA

Built 1937 Load: 29.9 t ADT: 2,911

SR 225

Fair

Over: OVER ZERBE RUN

VILLAGE OF TREVORTON, Northumberland, PA

Built 1934 Load: 29.9 t ADT: 1,604

SR 3018

Fair

Over: OVER MAHANTANGO CREEK

6.25 MI E OF PILLOW, Northumberland, PA

Built 1941 Load: 29.9 t ADT: 819

DELAWARE TWP T-506

Fair

Over: DELAWARE RUN

NORTHEAST OF DEWART, Northumberland, PA

Built 1986 Load: 29.9 t ADT: 110

T-460

Fair

Over: SCHWABEN CREEK

EAST OF REBUCK, Northumberland, PA

Built 1974 Load: 29.9 t ADT: 50

US 11&15; SR 0011

Fair

Over: SHERMANS CREEK; T-309

NEAR DUNCANNON BORO, Perry, PA

Built 1959 Load: 29.9 t ADT: 9,598

SR 0006 TR 6

Fair

Over: SR 0084 I-84 EB & WB

MILFORD TWP OVER I-84, Pike, PA

Built 1968 Load: 29.9 t ADT: 8,698

T-389 BEAVR RUN RD

Fair

Over: SR 0084 I-84

GREENE TWP 1 M E TR 507, Pike, PA

Built 1968 Load: 29.9 t ADT: 107

SR 0084 I-84 EB

Fair

Over: SR 0390 TR 390

PALMYRA TWP OVER TR 390, Pike, PA

Built 1968 Load: 29.9 t ADT: 11,419

SR 0084 I-84 WB

Fair

Over: SR 0390 TR 390

PALMYRA TWP OVER TR 390, Pike, PA

Built 1968 Load: 29.9 t ADT: 11,963

SR 0084 I-84 EB

Fair

Over: SHOHOLA CREEK

BLMING GRV TP 2 M E TR402, Pike, PA

Built 1967 Load: 29.9 t ADT: 7,988

SR 0590 TR 590

Fair

Over: WEST FALLS CREEK

LACKAWXN TWP .5M E SR4003, Pike, PA

Built 1957 Load: 29.9 t ADT: 2,216

SR 2001

Fair

Over: RAYMONDSKILL CREEK

DINGMAN TWP .3M N SR 2009, Pike, PA

Built 1958 Load: 29.9 t ADT: 6,238

SR 872-PA 872

Fair

Over: E FORK SINNEMAHONING CR

WHARTON, Potter, PA

Built 1971 Load: 29.9 t ADT: 672

SR 1005

Fair

Over: PHOENIX RUN

2 MILES S SUNDERLINVILLE, Potter, PA

Built 1934 Load: 29.9 t ADT: 133

ON TSR 470

Fair

Over: LUDINGTON RUN

2 MI S WEST BINGHAM, Potter, PA

Built 1971 Load: 29.9 t ADT: 65

ON TSR 807

Fair

Over: ALLEGHENY RIVER

OLMSTEAD, Potter, PA

Built 1892 Load: 29.9 t ADT: 129

I-81 SB (LR 1005)

Fair

Over: PA 443 (LR 140)

EXIT 100 ( 31), Schuylkill, PA

Built 1968 Load: 29.9 t ADT: 10,781

I-81 NB(LR1005)

Fair

Over: ALTAMONT BOULEVARD

0.2 MI.N.OF EX.124(36) NB, Schuylkill, PA

Built 1967 Load: 29.9 t ADT: 11,224

SR 1011 (LR 53038)

Fair

Over: SCHUYLKILL RIVER

VILLAGE OF BROCKTON, Schuylkill, PA

Built 1976 Load: 29.9 t ADT: 442

SR 4014(L.R.53078)

Fair

Over: MAHANTANGO CREEK

VISTA ROAD, Schuylkill, PA

Built 1922 Load: 29.9 t ADT: 61

BLACK CREEK RD

Fair

Over: MAHANOY CK.FLOOD PLAIN

750 FT WEST OF SR 901 7, Schuylkill, PA

Built 1946 Load: 29.9 t ADT: 50

T-453 LABENBERG RD

Fair

Over: CATAWISSA CREEK

200 FT WEST OF SR 339, Schuylkill, PA

Built 1939 Load: 29.9 t ADT: 60

(MUSH DAHL)

Fair

Over: LIZARD CREEK

.7 M. W OF PA 309, Schuylkill, PA

Built 1934 Load: 29.9 t ADT: 350

US 522

Fair

Over: SOUTH BRANCH MIDDLE CRK

BOROUGH OF MCCLURE, Snyder, PA

Built 1927 Load: 29.9 t ADT: 3,182

SR 522

Fair

Over: BEAVER CREEK

1 MI W OF BEAVER SPRINGS, Snyder, PA

Built 1929 Load: 29.9 t ADT: 3,924

sr 2007 Produce Rd

Fair

Over: OVER SUSQUEHECKA CREEK

3 MI E OF FREEBURG BORO, Snyder, PA

Built 1936 Load: 29.9 t ADT: 384

US 219 NBL

Fair

Over: T741 PILLTOWN ROAD

2.57 MILE NORTH OF US 30, Somerset, PA

Built 1969 Load: 29.9 t ADT: 6,196

US 219 SBL

Fair

Over: T741 PILLTOWN ROAD

2.57 MILE NORTH OF US 30, Somerset, PA

Built 1969 Load: 29.9 t ADT: 6,193

PA 403

Fair

Over: OVEN RUN

ROWENA, Somerset, PA

Built 1932 Load: 29.9 t ADT: 941

PA 403

Fair

Over: CSX RR STONYCREEK RIVER

LANDSTREET, Somerset, PA

Built 1983 Load: 29.9 t ADT: 998

PA TPK (I-76)

Fair

Over: SR 2033(LR 55046)

WEST OF ALLEGHENY TUNNEL, Somerset, PA

Built 2004 Load: 29.9 t ADT: 29,452

T-676 GLESSNER RD

Fair

Over: BENS CREEK

BENS CREEK, Somerset, PA

Built 1957 Load: 29.9 t ADT: 100

MAIN PARK ROAD

Fair

Over: LAUREL HILL CREEK

3/4 MI WEST OF SR 3037, Somerset, PA

Built 1934 Load: 29.9 t ADT: 190

Showing 3,101-3,150 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.