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

PA 61 (LR 160)

Fair

Over: CHRISTMANS RUN

NEAR HAMBURG BORO LINE, Berks, PA

Built 1955 Load: 89.7 t ADT: 21,710

SR 78 (LR 141)

Fair

Over: MILL CREEK

1 MI.E.OF BETHEL, Berks, PA

Built 1950 Load: 89.7 t ADT: 36,172

I-78 (LR 141)

Fair

Over: TRIB.MILL CREEK

3 MI.E.OF SHARTLESVILLE, Berks, PA

Built 1956 Load: 89.7 t ADT: 32,446

SR2089(LR 1011)

Fair

Over: CONESTOGA CREEK

MORGANTOWN, Berks, PA

Built 1962 Load: 89.7 t ADT: 7,565

US 422(LR 149)

Fair

Over: TRIB.TULPEHOCKEN CREEK

1 MI WEST OF WOMELSDORF, Berks, PA

Built 1951 Load: 89.7 t ADT: 7,966

SR 422EB(LR 1041)

Fair

Over: LEAFS RUN

US422EB-OLD 422EB JUNCT., Berks, PA

Built 1941 Load: 89.7 t ADT: 16,292

SR 422 WB(LR 146)

Fair

Over: LEAFS RUN

US 422WB-OLD 422 JUNCT., Berks, PA

Built 1967 Load: 89.7 t ADT: 15,457

PA 724(LR 147)

Fair

Over: TRIB SCHUYLKILL RIV

NEAR CHESTER COUNTY LINE, Berks, PA

Built 1949 Load: 89.7 t ADT: 5,108

SR 724 (LR 147)

Fair

Over: TRIB SCHUYLKILL RIV

1.3M.W OF CHESTER CO LINE, Berks, PA

Built 1949 Load: 89.7 t ADT: 5,108

PA TPK (I-76)

Fair

Over: TRIB TO E. BR. CONESTOGA

EAST OF MORGANTOWN, Berks, PA

Built 1950 Load: 89.7 t ADT: 39,934

WYOMISSING BLVD

Fair

Over: WYOMISSING CREEK

BORO OF WYOMISSING, Berks, PA

Built 1931 Load: 89.7 t ADT: 11,125

SR 0006

Fair

Over: RUMMERFIELD CREEK

STANDING STONE TWP, Bradford, PA

Built 1969 Load: 89.7 t ADT: 6,993

T-381 BRANDON RD

Fair

Over: BLACK RUN

0.4 MI NE OF T-320, Butler, PA

Built 1920 Load: 89.7 t ADT: 100

I-80 (LR 1009)

Fair

Over: BLACK CREEK

1 MI.E.OF EAST SIDE BORO, Carbon, PA

Built 1965 Load: 89.7 t ADT: 21,850

PA TPK (I-476)

Fair

Over: SAWMILL RUN

0.5 MI W BELTZVILLE LAKE, Carbon, PA

Built 1956 Load: 89.7 t ADT: 24,228

PA TPK (I-76)

Fair

Over: TRIB. TO FRENCH CREEK

NEAR LOAG, Chester, PA

Built 1950 Load: 89.7 t ADT: 39,934

PA TPK (I-76)

Fair

Over: MARSH CREEK

NORTHEAST OF GLENMOORE, Chester, PA

Built 1950 Load: 89.7 t ADT: 39,934

PA TPK (I-76)

Fair

Over: THREE SQUARE HOLLOW RUN

UPPER MIFFLIN TWP, Cumberland, PA

Built 1938 Load: 89.7 t ADT: 21,102

PA TPK (I-76)

Fair

Over: BRANDY RUN

UPPER MIFFLIN TWP, Cumberland, PA

Built 1938 Load: 89.7 t ADT: 21,102

PA TPK (I-76)

Fair

Over: DOUBLING GAP CR

LOWER MIFFLIN TWP, Cumberland, PA

Built 1938 Load: 89.7 t ADT: 21,102

PA TPK (I-76)

Fair

Over: ROCK RUN CREEK

UPPER FRANKFORD TWP, Cumberland, PA

Built 1938 Load: 89.7 t ADT: 21,102

PA TPK (I-76)

Fair

Over: LAUREL RUN

HIGHSPIRE BORO, Dauphin, PA

Built 1949 Load: 89.7 t ADT: 29,356

PA TPK (I-76)

Fair

Over: IRON RUN

LONDONDERRY TWP, Dauphin, PA

Built 1949 Load: 89.7 t ADT: 24,423

PA TPK (I-76)

Fair

Over: HOFFERS CREEK

CONEWAGO TWP, Dauphin, PA

Built 1949 Load: 89.7 t ADT: 24,423

SR 5 WEST LAKE RD.

Fair

Over: OVER ELK CREEK

LAKE CITY BOROUGH, Erie, PA

Built 1930 Load: 89.7 t ADT: 1,293

SR 90 EB/WB

Fair

Over: OVER FOUR MILE CREEK

GREENE TOWNSHIP, Erie, PA

Built 1959 Load: 89.7 t ADT: 34,248

SR 90 EB/WB

Fair

Over: OVER TWELVEMILE CREEK

NORTH EAST TOWNSHIP, Erie, PA

Built 1959 Load: 89.7 t ADT: 21,113

SR 90 EB/WB

Fair

Over: OVER SIXTEEN MILE CREEK

NORTH EAST TOWNSHIP, Erie, PA

Built 1959 Load: 89.7 t ADT: 17,965

PA TPK (I-76)

Fair

Over: CONOCOCHEAGUE CR

NEAR WILLOW HILL, Franklin, PA

Built 1939 Load: 89.7 t ADT: 21,433

SR 1015

Fair

Over: Norfolk Southern Railway

JEFFERSON TOWNSHIP, Greene, PA

Built 1919 Load: 89.7 t ADT: 908

SR 2016

Fair

Over: Cumberland Mine Railroad

MONONGAHELA TOWNSHIP, Greene, PA

Built 1968 Load: 89.7 t ADT: 206

PA TPK (I-76)

Fair

Over: SHEARERS CREEK

PENN TWP, Lancaster, PA

Built 1949 Load: 89.7 t ADT: 24,971

PA TPK (I-76)

Fair

Over: HAMMER CK.

PENN TWP, Lancaster, PA

Built 1948 Load: 89.7 t ADT: 24,971

PA TPK (I-76)

Fair

Over: FURNACE RUN

ELIZABETH TWP, Lancaster, PA

Built 1949 Load: 89.7 t ADT: 24,971

PA TPK (I-76)

Fair

Over: MIDDLE CREEK

CLAY TWP, Lancaster, PA

Built 1948 Load: 89.7 t ADT: 24,971

PA TPK (I-76)

Fair

Over: STONY RUN

EAST COCALICO TWP, Lancaster, PA

Built 1949 Load: 89.7 t ADT: 24,971

PA TPK (I-76)

Fair

Over: LITTLE MUDDY CREEK

BRECKNOCK TWP, Lancaster, PA

Built 1949 Load: 89.7 t ADT: 33,608

PA TPK (I-76)

Fair

Over: MUDDY CREEK

BRECKNOCK TWP, Lancaster, PA

Built 1949 Load: 89.7 t ADT: 33,608

PA TPK (I-76)

Fair

Over: TRIB. TO BLACK CREEK

BRECKNOCK TWP, Lancaster, PA

Built 1949 Load: 89.7 t ADT: 33,608

SR 78(LR 443)

Fair

Over: MILL CREEK *

NEW SMITHVILLE, Lehigh, PA

Built 1958 Load: 89.7 t ADT: 35,420

PA 100(LR 672)

Fair

Over: LYON CREEK

LYON VALLEY, Lehigh, PA

Built 1964 Load: 89.7 t ADT: 12,205

SR 4040 (LR 39072)

Fair

Over: TRIB. TO LYON CREEK

HOLBENS VALLEY RD., Lehigh, PA

Built 1930 Load: 89.7 t ADT: 1,946

SR 60 NB/SB BEAVER

Fair

Over: OVER HOGBACK RUN

SHENANGO TOWNSHIP, Mercer, PA

Built 1966 Load: 89.7 t ADT: 12,034

I-80 (LR1002) EB

Fair

Over: REEDERS RUN*

2 MI.W.OF PA 33, Monroe, PA

Built 1962 Load: 89.7 t ADT: 24,792

I-80 (LR 1002)

Fair

Over: ROCKY RUN*

1.8 MI.W.OF PA 33, Monroe, PA

Built 1963 Load: 89.7 t ADT: 48,753

I-80 W.B.(LR 1002)

Fair

Over: REEDERS RUN

2 MI.W.OF PA 33, Monroe, PA

Built 1962 Load: 89.7 t ADT: 23,961

I-80(LR 776)

Fair

Over: CHERRY CREEK

DELAWARE WATER GAP;I-80, Monroe, PA

Built 1953 Load: 89.7 t ADT: 33,551

PA 447 (LR 497)

Fair

Over: TRIB.TO BRODHEAD CREEK

NEAR INTER.OF PA 191, Monroe, PA

Built 1959 Load: 89.7 t ADT: 9,299

PA TPK (I-276)

Fair

Over: SANDY RUN

NEAR FORT WASHINGTON, Montgomery, PA

Built 1954 Load: 89.7 t ADT: 74,921

PA TPK (I-276)

Fair

Over: BR PENNYPACK CR.

SOUTH OF HATBORO, Montgomery, PA

Built 1954 Load: 89.7 t ADT: 104,500

Showing 12,201-12,250 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.