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

US 222 NB

Fair

Over: SR1051 Church Street

S.E. Reamstown, Lancaster, PA

Built 1971 Load: 25.4 t ADT: 21,653

US 222 SB; SR 0222

Fair

Over: SR 1051; Church St

.5 mi.S. of Reamstown, Lancaster, PA

Built 1971 Load: 25.4 t ADT: 21,960

SR 2021; TWP RD

Fair

Over: VALLEY RUN

1 MI.S. COOPERSVILLE, Lancaster, PA

Built 1956 Load: 25.4 t ADT: 396

SR 3027

Fair

Over: LITTLE CONESTOGA CREEK

2 MILE SOUTH MILLERSVILLE, Lancaster, PA

Built 1947 Load: 25.4 t ADT: 605

SR 4017

Fair

Over: PA 283; SR 0300

OVER PA 283, Lancaster, PA

Built 1969 Load: 25.4 t ADT: 1,140

T549 GREENFIELD RD

Fair

Over: STAUFFER RUN

1/2 MI NE OF US 30, Lancaster, PA

Built 1967 Load: 25.4 t ADT: 5,170

T-540 FROGTOWN RD

Fair

Over: PEQUEA CREEK

2 MI SOUTH OF SR 772, Lancaster, PA

Built 1980 Load: 25.4 t ADT: 1,035

MILLWOOD ROAD

Fair

Over: PEQUEA CREEK

1 MI. SOUTH OF S.R. 340, Lancaster, PA

Built 1970 Load: 25.4 t ADT: 280

STRAWBERRY ST

Fair

Over: CONESTOGA RIVER

100 FT S OF CHESAPEAKE ST, Lancaster, PA

Built 1967 Load: 25.4 t ADT: 1,135

MOUNTVILLE RD

Fair

Over: SLIPPERY ROCK CREEK

1700 N.E. OF SR 2022, Lawrence, PA

Built 1940 Load: 25.4 t ADT: 164

BROAD STREET

Fair

Over: TULPEHOCKEN CREEK

RICHLAND AVE/MAPLE AVE, Lebanon, PA

Built 1964 Load: 25.4 t ADT: 200

SR 1011(LR 48129)

Fair

Over: PA 378(LR 1007)

8TH AVE.EXIT, Lehigh, PA

Built 1967 Load: 25.4 t ADT: 18,578

SR 2016 (LR39006)

Fair

Over: TRIB. TO HOSENSACK CREEK

150 FEET WEST OF SR 2027, Lehigh, PA

Built 1934 Load: 25.4 t ADT: 2,085

SR 3004(LR.39022)

Fair

Over: LITTLE LEHIGH CREEK

.5 MI. S. OF LR 39023 INT, Lehigh, PA

Built 1950 Load: 25.4 t ADT: 1,238

MCH CHK RD & RAMP

Fair

Over: STORM SEWER

15TH ST. INTERCHANGE, Lehigh, PA

Built 1978 Load: 25.4 t ADT: 5,564

HAMILTON STREET

Fair

Over: UNION STREET RAMP

WEST OF RIVER BRIDGE, Lehigh, PA

Built 1959 Load: 25.4 t ADT: 15,000

SR 0080 I-80 WB

Fair

Over: SR 0309

BUTLER TWP OVER PA 309, Luzerne, PA

Built 1966 Load: 25.4 t ADT: 11,043

SR 0118 TR 118

Fair

Over: KITCHEN CREEK

FAIRMOUNT TWP RICKET GLEN, Luzerne, PA

Built 1932 Load: 25.4 t ADT: 2,776

SR 4016

Fair

Over: HUNLOCK CREEK

HUNLOCK TWP .3M W SR 4001, Luzerne, PA

Built 1925 Load: 25.4 t ADT: 4,420

T-339 MUNDIES RD

Fair

Over: NESCOPECK CREEK TRIB

1000 EAST OF SR 93, Luzerne, PA

Built 1959 Load: 25.4 t ADT: 150

SR 346-PA 346

Fair

Over: WILLOW CREEK

15 MI W BRADFORD, McKean, PA

Built 1970 Load: 25.4 t ADT: 161

SR 8017-US219 RAMP

Fair

Over: PRIVATE RD TUNUNGWANT C

BRADFORD, McKean, PA

Built 1977 Load: 25.4 t ADT: 2,606

SR 18 SHARON ROAD

Fair

Over: OVER BIG RUN

WEST SALEM TOWNSHIP, Mercer, PA

Built 1969 Load: 25.4 t ADT: 8,302

BRIDGE 2619 T-776

Fair

Over: OVER MILL RUN

CHURCH RD. FINDLEY TWP., Mercer, PA

Built 1975 Load: 25.4 t ADT: 79

BRIDGE 3206 T-768

Fair

Over: OVER BLACK RUN BRANCH

BLACK RUN LIBERTY TWP., Mercer, PA

Built 1972 Load: 25.4 t ADT: 134

SR 3017(LR 930)

Fair

Over: LAKE CREEK

VILLAGE OF SAYLORSBURG, Monroe, PA

Built 1938 Load: 25.4 t ADT: 12,079

HUNTINGDON PIKE

Fair

Over: PENNYPACK TRAIL

VALLEY FALL 3371-J02, Montgomery, PA

Built 1936 Load: 25.4 t ADT: 21,544

POTTSTOWN BY-PASS

Fair

Over: SPROGLES RUN

SANATOGA 3139C02, Montgomery, PA

Built 1965 Load: 25.4 t ADT: 55,039

COUNTY LINE ROAD

Fair

Over: MID-COUNTY EXPRESSWAY

RADNOR;LOWER MERI. 14J07, Delaware, PA

Built 1974 Load: 25.4 t ADT: 6,124

MID-COUNTY EXWY.NB

Fair

Over: MONTGOMERY AVENUE

L. MERION 35A06 (3477-F2, Montgomery, PA

Built 1974 Load: 25.4 t ADT: 45,310

BUSTARD ROAD

Fair

Over: TOWAMENCIN CREEK

SW KULPSVILL 15H13/3143D4, Montgomery, PA

Built 1855 Load: 25.4 t ADT: 10,808

ABRAMS ROAD

Fair

Over: ABRAMS RUN

U. MERION TWP 28D8/3366K2, Montgomery, PA

Built 1937 Load: 25.4 t ADT: 3,665

RIDGE PIKE

Fair

Over: PERKIOMEN CREEK

COLLEGEVILLE 3253-J01, Montgomery, PA

Built 1798 Load: 25.4 t ADT: 10,542

TWINING ROAD

Fair

Over: SANDY RUN

700 S SR152 ADC 3258-C10, Montgomery, PA

Built 1947 Load: 25.4 t ADT: 2,000

SR 54

Fair

Over: OVER STONY BROOK

2 MI S OF WASHINGTONVILLE, Montour, PA

Built 1928 Load: 25.4 t ADT: 5,780

SR 1003

Fair

Over: W BR CHILLISQUAQUE CREEK

VILLAGE OF EXCHANGE, Montour, PA

Built 1956 Load: 25.4 t ADT: 435

T-412 CTY BR # 24

Fair

Over: SECHLER RUN

0.2 MI. S OF RIDGEVILLE, Montour, PA

Built 1977 Load: 25.4 t ADT: 500

T-390 CO. BR #21

Fair

Over: MAHONING CREEK

0.9 MI W OF KASEVILLE, Montour, PA

Built 1974 Load: 25.4 t ADT: 50

I-78 EB (LR 1045)

Fair

Over: SR 3002(LR 48001)STREAM

I-78 OVER BLACK RIV.RD., Northampton, PA

Built 1989 Load: 25.4 t ADT: 27,801

PA 487

Fair

Over: SHAMOKIN CREEK

VILLAGE OF PAXINOS, Northumberland, PA

Built 1947 Load: 25.4 t ADT: 9,307

SR 2007

Fair

Over: OVER SHAMOKIN CREEK

2 MI E OF SNYDERTOWN, Northumberland, PA

Built 1974 Load: 25.4 t ADT: 122

US 22-322;SR0022EB

Fair

Over: SR 1012

1.5MI SE OF MILLERSTOWN, Perry, PA

Built 1966 Load: 25.4 t ADT: 8,985

US 22/322;SR 22 EB

Fair

Over: MEADOW GROVE RD.

4.4 MI.NW OF AMITY HALL, Perry, PA

Built 1966 Load: 25.4 t ADT: 8,940

PA 34; Market St

Fair

Over: Juniata River

EAST OF NEWPORT BORO, Perry, PA

Built 1934 Load: 25.4 t ADT: 10,331

SR 2004

Fair

Over: LITTLE BUSHKILL CREEK

PORTER TWP 5 M E TR 402, Pike, PA

Built 1970 Load: 25.4 t ADT: 216

SR 2019

Fair

Over: DINGMANS CREEK

DELAWARE TWP .2 M E TR209, Pike, PA

Built 1957 Load: 25.4 t ADT: 4,287

I-81NB (LR1005)

Fair

Over: PA 443 (LR 140)

EXIT 100 (31), Schuylkill, PA

Built 1968 Load: 25.4 t ADT: 11,127

HAWK MOUNTAIN ROAD

Fair

Over: LITTLE SCHUYLKILL RIVER

DREHERSVILLE, Schuylkill, PA

Built 1960 Load: 25.4 t ADT: 478

PA 35

Fair

Over: TRIB NO BR MAHANTANGO CR

VILLAGE MT PLEASANT MILLS, Snyder, PA

Built 1929 Load: 25.4 t ADT: 3,753

T-588 BEAVER TWP.

Fair

Over: OVER TRIB.TO MIDDLE CREE

.5 MI NW OF BEAVERTOWN, Snyder, PA

Built 1955 Load: 25.4 t ADT: 200

Showing 1,601-1,650 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.