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 1008 DISTRICT R

Fair

Over: OTTER CREEK

DELAWARE TOWNSHIP, Mercer, PA

Built 1974 Load: 43.5 t ADT: 838

SR 1008 DISTRICT R

Fair

Over: OVER OTTER CREEK

DELEWARE TOWNSHIP, Mercer, PA

Built 1974 Load: 43.5 t ADT: 838

BRIDGE 906 T-717

Fair

Over: OVER OTTER CREEK

STRAUB ROAD OTTER CREEK, Mercer, PA

Built 1985 Load: 43.5 t ADT: 76

BRIDGE 3001 T-674

Fair

Over: OVER PINE RUN

OLD MERCER SPRINGFIELD, Mercer, PA

Built 1988 Load: 43.5 t ADT: 82

BRIDGE 724 T-677

Fair

Over: OVER BIG RUN

COSSITT RD WEST SALEM TWP, Mercer, PA

Built 1962 Load: 43.5 t ADT: 89

BRIDGE 2714 T-880

Fair

Over: OVER WOLF CREEK EAST BR.

HEMLOCK RD WOLF CREEK TWP, Mercer, PA

Built 1961 Load: 43.5 t ADT: 6

SR 22-US 22

Fair

Over: MUSSER RUN

MCVEYTOWN, Mifflin, PA

Built 1933 Load: 43.5 t ADT: 6,199

SR 1003

Fair

Over: TREASTER RUN

1 MILE NORTH LOCKE MILLS, Mifflin, PA

Built 1935 Load: 43.5 t ADT: 386

SR 2001

Fair

Over: BRANCH JACKS CREEK

MAITLAND, Mifflin, PA

Built 1987 Load: 43.5 t ADT: 971

GRAVEL PIKE

Fair

Over: OLD MILL RACE CREEK

1.4MI.S.PERKIOMENV.06K09, Montgomery, PA

Built 1967 Load: 43.5 t ADT: 7,311

MILLER ROAD

Fair

Over: WEST BR.PERKIOMEN CREEK

BUTTER VAL. 2803J9, Montgomery, PA

Built 1932 Load: 43.5 t ADT: 206

FARMINGTON AVENUE

Fair

Over: PA 100

U. POTTSGROVE 11F3/3026H4, Montgomery, PA

Built 1964 Load: 43.5 t ADT: 4,796

SCHWAB ROAD

Fair

Over: TRIB.W.NESHAMINY CREEK

SCHWAB RD. 16H08, Montgomery, PA

Built 1980 Load: 43.5 t ADT: 2,431

RITTENHOUSE ROAD

Fair

Over: SKIPPACK CREEK

0.6 Mi W SR63 ADC 3143-C1, Montgomery, PA

Built 1908 Load: 43.5 t ADT: 2,965

GARGES ROAD

Fair

Over: EAST BR. PERKIOMEN CREEK

GARGES ROAD 3029-J10, Montgomery, PA

Built 1911 Load: 43.5 t ADT: 649

GERMANTOWN PIKE

Fair

Over: BRANCH STONY CREEK

0.1 MI W SR202 3255-K8, Montgomery, PA

Built 1962 Load: 43.5 t ADT: 25,609

REIFSNYDER ROAD

Fair

Over: MINISTER CREEK

1.3MI SE OF SR663 3027-K3, Montgomery, PA

Built 1929 Load: 43.5 t ADT: 250

PA TPK (RAMP G)

Fair

Over: RAMP K

MID-CTY.INTERCH. 29H09, Montgomery, PA

Built 1991 Load: 43.5 t ADT: 54,154

I-78 EB (LR 1045)

Fair

Over: PA 378 (LR 297)

I-78 EB OVER PA.378, Northampton, PA

Built 1989 Load: 43.5 t ADT: 27,801

SR 2014 (LR 48010)

Fair

Over: SAUCON CREEK

SHIMERSVILLE RD., Northampton, PA

Built 1968 Load: 43.5 t ADT: 11,656

I-80 EB

Fair

Over: SR405 & W BR SUSQUEHANNA

MILTON I80EB RIVER BRIDGE, Northumberland, PA

Built 1962 Load: 43.5 t ADT: 13,743

SR 4016

Fair

Over: TRIB TO PLUM CREEK

2MI.SE OF HAMILTON, Northumberland, PA

Built 1939 Load: 43.5 t ADT: 871

MAPLE AVENUE

Fair

Over: LIMESTONE RUN

MILTON BORO, Northumberland, PA

Built 1990 Load: 43.5 t ADT: 630

PA 74; SR 0074

Fair

Over: SHERMANS CREEK

NEAR BRIDGEPORT, Perry, PA

Built 1954 Load: 43.5 t ADT: 2,053

PA 74; SR 0074

Fair

Over: BIG BUFFALO CREEK

4 MI S OF ICKESBURG, Perry, PA

Built 1933 Load: 43.5 t ADT: 2,162

MAIN ENTRANCE ROAD

Fair

Over: FOWLER HOLLOW RUN

FOWLERS HOLLOW STATE PARK, Perry, PA

Built 1937 Load: 43.5 t ADT: 40

SR 49-PA 49

Fair

Over: BAKER RUN

2 MI N COUDERSPORT, Potter, PA

Built 1953 Load: 43.5 t ADT: 1,289

I-81 NB (LR 1005)

Fair

Over: ACCESS ROAD & MILL CREEK

2 MI. N. OF EXIT 124 (36), Schuylkill, PA

Built 1968 Load: 43.5 t ADT: 11,224

I-81 SB(LR 1005)

Fair

Over: MILL CREEK/ACCESS RD

2 MI. N. OF EXIT 124 (36), Schuylkill, PA

Built 1968 Load: 43.5 t ADT: 10,874

SR 2001

Fair

Over: TUB MILL RUN

COMPTON, Somerset, PA

Built 1928 Load: 43.5 t ADT: 333

SR 3003

Fair

Over: LAUREL HILL CREEK

CONFLUENCE, Somerset, PA

Built 1901 Load: 43.5 t ADT: 235

SR 4033

Fair

Over: ROARING RUN

PILLTOWN, Somerset, PA

Built 1908 Load: 43.5 t ADT: 100

T678 FLICK HILL RD

Fair

Over: N.BR.QUEMAHONING CREEK

2.8 MI.W.OF SIPESVILLE, Somerset, PA

Built 1919 Load: 43.5 t ADT: 20

T-773 CRESCENT DR

Fair

Over: CLEAR SHADE CREEK

VILLAGE OF OGLETOWN, Somerset, PA

Built 1992 Load: 43.5 t ADT: 100

T-626 TEDROW ROAD

Fair

Over: BEAVER DAM CREEK

2.4 MI.SW.OF STOYSTOWN, Somerset, PA

Built 1907 Load: 43.5 t ADT: 25

T318 Sandy Run RD

Fair

Over: SANDY RUN

6 MI.W.OF NEW LEXINGTON, Somerset, PA

Built 1910 Load: 43.5 t ADT: 25

SR 0081 I-81 SB

Fair

Over: SR 0171 TR 171 EXIT 230

GREAT BEND TP OVER TR 171, Susquehanna, PA

Built 1961 Load: 43.5 t ADT: 9,450

SR 0092 TR 92

Fair

Over: NINE PARTNERS CREEK

LENOX TWP .1 M N SR 2063, Susquehanna, PA

Built 1958 Load: 43.5 t ADT: 4,135

SR 0492 TR 492

Fair

Over: SALT LICK CREEK

NEW MILFORD .6M E SR 1012, Susquehanna, PA

Built 1978 Load: 43.5 t ADT: 1,852

SR 4013

Fair

Over: APOLACON CREEK

APOLACON TWP 619 E TR858, Susquehanna, PA

Built 1964 Load: 43.5 t ADT: 198

SR 2027

Fair

Over: CANOE CAMP CREEK

1 MI SE OF CANOE CAMP, Tioga, PA

Built 1954 Load: 43.5 t ADT: 460

SR 4012

Fair

Over: OVER JEMISON CREEK

3 MI E OF SABINSVILLE, Tioga, PA

Built 1949 Load: 43.5 t ADT: 358

SR 80 EB

Fair

Over: T-388 COAL VALLEY RD

CLINTON TOWNSHIP, Venango, PA

Built 1966 Load: 43.5 t ADT: 9,349

SR 322 8TH STREET

Fair

Over: OVER ALLEGHENY RIVER

CITY OF FRANKLIN, Venango, PA

Built 1986 Load: 43.5 t ADT: 8,790

SR 3017 UTICA ROAD

Fair

Over: OVER MILL CREEK

FRENCH CREEK TOWNSHIP, Venango, PA

Built 1967 Load: 43.5 t ADT: 248

SR 4010 SUGAR CR

Fair

Over: OVER SUGAR CREEK

SUGAR CREEK BOROUGH, Venango, PA

Built 1920 Load: 43.5 t ADT: 833

SR 426

Fair

Over: OVER BROKENSTRAW/DAMON

SPRING CREEK TOWNSHIP, Warren, PA

Built 1924 Load: 43.5 t ADT: 1,141

SR 4002 LINDSEY HL

Fair

Over: OVER WHITNEY RUN BRANCH

SPRING CREEK TOWNSHIP, Warren, PA

Built 1963 Load: 43.5 t ADT: 131

SR 0070

Fair

Over: BR DUTCH FORK BUFFALO CK

DONEGAL TOWNSHIP, Washington, PA

Built 1961 Load: 43.5 t ADT: 14,338

SR 0070

Fair

Over: BR DUTCH FORK BUFFALO CK

DONEGAL TOWNSHIP, Washington, PA

Built 1961 Load: 43.5 t ADT: 12,124

Showing 8,951-9,000 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.