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

SR 150-PA 150

Good

Over: T-471

BLANCHARD DAM STATE PARK, Centre, PA

Built 1966 Load: 26.3 t ADT: 4,091

HILLENDALE ROAD

Good

Over: EAST BR OF RED CLAY CR

KENNETT TOWNSHIP 47H08, Chester, PA

Built 1984 Load: 26.3 t ADT: 5,292

SR 3030

Good

Over: ANDERSON CREEK

LOUIS R DONAHUE MEMORIAL, Clearfield, PA

Built 1996 Load: 26.3 t ADT: 1,061

SR 4002

Good

Over: SINNEMAHONING CREEK

KEATING, Clinton, PA

Built 1973 Load: 26.3 t ADT: 31

MID-COUNTY EXWY.NB

Good

Over: SEPTA(P&W);TRIB.CRUM CK.

SPRINGFIELD MALL 34G06, Delaware, PA

Built 1990 Load: 26.3 t ADT: 40,282

MID-COUNTY EXWY.NB

Good

Over: CLYDE ROAD

RADNOR TOWNSHIP 25H01, Delaware, PA

Built 1967 Load: 26.3 t ADT: 46,663

MID-COUNTY EXWY.SB

Good

Over: CLYDE ROAD

RADNOR TOWNSHIP 25H01, Delaware, PA

Built 1967 Load: 26.3 t ADT: 43,234

PA TPK (I-476)

Good

Over: SR 3011 LR35049

TAYLOR BOROUGH, Lackawanna, PA

Built 1995 Load: 26.3 t ADT: 6,895

US 222 Northbound

Good

Over: SR1013 Pleas. Valley Rd.

0.25 MI.S. OF US 322, Lancaster, PA

Built 1970 Load: 26.3 t ADT: 29,454

KOSER ROAD

Good

Over: BACHMAN RUN TRIB

2000 FT EAST OF SR 4011, Lancaster, PA

Built 1979 Load: 26.3 t ADT: 1,655

SR 0376 EB

Good

Over: SR 4004 PULASKI RD

1/2 MI. NORTH OF SR 0422, Lawrence, PA

Built 1975 Load: 26.3 t ADT: 6,573

I 78(LR 1045)

Good

Over: SR 3008(CETRONIA RD)

OVER SR3008(CETRONIA RD), Lehigh, PA

Built 1988 Load: 26.3 t ADT: 28,618

PA TPK(I-276)RP AB

Good

Over: SANDY RUN

FORT WASHINGTON INTERCHG, Montgomery, PA

Built 1954 Load: 26.3 t ADT: 74,921

MOUNTAIN DALE RD

Good

Over: SOUTH BRANCH MIDDLE CRK

VILLAGE OF MCCLURE, Snyder, PA

Built 1965 Load: 26.3 t ADT: 327

US 219 NBL

Good

Over: PA 403

OVER PA 403, Somerset, PA

Built 1969 Load: 26.3 t ADT: 7,439

SR 87

Good

Over: OVER BR. MEHOOPANY CR.

1 MI NW OF COLLEY, Sullivan, PA

Built 1987 Load: 26.3 t ADT: 471

T-389

Good

Over: LITTLE LOYALSOCK CREEK

2.5 MI. W OF CHERRY MILLS, Sullivan, PA

Built 1975 Load: 26.3 t ADT: 54

RAMP D to SR 65 SB

Good

Over: CHATEAU ST. N&S RR

SR 65 Marshall Ave. Inter, Allegheny, PA

Built 1972 Load: 26.3 t ADT: 4,094

SR 322-US 322

Good

Over: SR 3007

1 MI N STATE COLLEGE, Centre, PA

Built 2001 Load: 26.3 t ADT: 9,795

SR0259

Good

Over: CONEMAUGH RIVER

WESLEY E. DODSON, Indiana, PA

Built 2006 Load: 26.3 t ADT: 943

REMINGTON AVENUE

Good

Over: STAFFORD MEADOW BROOK

BETWEEN ELM AND BROOK ST, Lackawanna, PA

Built 1964 Load: 26.3 t ADT: 100

T-361 TWIN LAKES

Good

Over: WILSON RUN

300 FT WEST OF SR 321, Elk, PA

Built 2019 Load: 26.9 t ADT: 134

CLIFF MINE RD

Good

Over: MC CLARENS RUN

MC01 MCCLARENS RUN # 1, Allegheny, PA

Built 1949 Load: 27.2 t ADT: 23,000

RAMP E 8008 EB

Good

Over: BEECHWOOD BLVD

SQUIRREL HILL INTERCHANGE, Allegheny, PA

Built 1952 Load: 27.2 t ADT: 13,133

SR 0376 EB

Good

Over: SR 0151

HOPEWELL INTERCHANGE, Beaver, PA

Built 1967 Load: 27.2 t ADT: 16,343

MEADOW AVENUE

Good

Over: FURNACE CREEK

WEST OF FREEMAN STREET, Berks, PA

Built 1967 Load: 27.2 t ADT: 390

SR 4004

Good

Over: MILL RUN

ALTOONA 58TH STREET, Blair, PA

Built 1949 Load: 27.2 t ADT: 7,700

SR 4041

Good

Over: BALD EAGLE CREEK

.6 MI.S.OF BALD EAGLE, Blair, PA

Built 1973 Load: 27.2 t ADT: 6,101

MOUNTAIN VIEW ROAD

Good

Over: SAW MILL ROAD

NOCKAMIXON STATE 09G08, Bucks, PA

Built 1972 Load: 27.2 t ADT: 3,956

GALLOWAY ROAD

Good

Over: BRANCH NESHAMINY CREEK

NR.PENNA TURNPIKE 41J07, Bucks, PA

Built 1981 Load: 27.2 t ADT: 16,619

SAGINAW ROAD

Good

Over: BIG ELK CREEK

NEAR HICKORY HILL 52D6, Chester, PA

Built 1925 Load: 27.2 t ADT: 484

PA TPK (I-76)

Good

Over: EAST BR.TROUT CRK

EAST OF VALLEY FORGE PARK, Chester, PA

Built 1950 Load: 27.2 t ADT: 47,120

SR 120-PA 120

Good

Over: NORFOLK AND SOUTHERN

CITY OF LOCK HAVEN, Clinton, PA

Built 1980 Load: 27.2 t ADT: 6,523

581 WB Ramp C

Good

Over: 81

0.2 MI.E. OF LR 21051, Cumberland, PA

Built 1973 Load: 27.2 t ADT: 13,941

PA 283 WB (SR0300)

Good

Over: Lumber St. (T-380)

1.5 MI.N. OF HIGHSPIRE, Dauphin, PA

Built 1971 Load: 27.2 t ADT: 27,820

MID-COUNTY EXWY.SB

Good

Over: SEPTA(P&W);TRIB.CRUM CK.

SPRINGFIELD MALL 34G06, Delaware, PA

Built 1989 Load: 27.2 t ADT: 41,753

SR 0307 TR 307

Good

Over: STAFFORD MEADOW BROOK

RORNG BR TP 2.4M N SR2010, Lackawanna, PA

Built 1989 Load: 27.2 t ADT: 5,474

I-376 EB

Good

Over: 8008 RP.E & SHENANGO RIV

I-376 OVER SHENANGO RIVER, Lawrence, PA

Built 1975 Load: 27.2 t ADT: 6,573

I 180 WB

Good

Over: W.B. OVER S.R. 2061

1 MI SE OF MUNCY, Lycoming, PA

Built 1973 Load: 27.2 t ADT: 6,914

US 15 NBL

Good

Over: OVER FOY AVE-3036

.5 MI NORTH OF WMSPT., Lycoming, PA

Built 1990 Load: 27.2 t ADT: 8,045

US 15 SBL

Good

Over: OVER FOY AVE-3036

.5 MI NORTH OF WMSPT., Lycoming, PA

Built 1990 Load: 27.2 t ADT: 8,834

SR 2102 CLNTVLLE R

Good

Over: OVER SR 79 NB

FINDLEY TOWNSHIP, Mercer, PA

Built 1966 Load: 27.2 t ADT: 210

T-456

Good

Over: SCHWABEN CREEK

E OF REBUCK, Northumberland, PA

Built 1974 Load: 27.2 t ADT: 25

SR3043

Good

Over: STONEY RUN

ROSE STREET, Indiana, PA

Built 1998 Load: 27.2 t ADT: 5,987

US 30; SR 0030

Good

Over: NORFOLK AND SOUTHERN RR

GREENFIELD STATION, Lancaster, PA

Built 2002 Load: 27.2 t ADT: 66,610

US 30; SR 0030

Good

Over: Homeland Drive

O.3 MI.E. OF U.S. 222, Lancaster, PA

Built 2002 Load: 27.2 t ADT: 105,303

SR 99-I 99

Good

Over: SR 3040/ N.BALD EAGLE CR

1.5MI N PORT MATILDA EXIT, Centre, PA

Built 2005 Load: 27.2 t ADT: 10,995

SR 26-PA 26

Good

Over: SEDA COG/NIT&BALD EGL RR

PLEASANT GAP, Centre, PA

Built 2006 Load: 27.2 t ADT: 8,178

SR 2003; TWP RD

Good

Over: SHERMANS CREEK

2MI N OF SHERMSDLE, Perry, PA

Built 2006 Load: 27.2 t ADT: 296

SR 99-I 99

Good

Over: ACCESS ROAD

3 MILES SW PORT MATILDA, Centre, PA

Built 2006 Load: 27.2 t ADT: 6,583

Showing 12,651-12,700 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.