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

SR0422 WB

Fair

Over: T-604 METZ RD

METZ WB, Indiana, PA

Built 1969 Load: 29.0 t ADT: 4,099

SR3015

Fair

Over: MUDDY RUN

MUDDY RUN NO.2, Indiana, PA

Built 1936 Load: 29.0 t ADT: 90

SR4010

Fair

Over: TRIB TO CROOKED CREEK

KIMMEL RD NO.2, Indiana, PA

Built 1939 Load: 29.0 t ADT: 214

T-714 HORSE THIEF

Fair

Over: EAST BRANCH RICHARDS RUN

BTW T712 & T716, Indiana, PA

Built 1977 Load: 29.0 t ADT: 20

GOMPERS AVENUE

Fair

Over: MARSH RUN

BTW S 4TH & S CHERRY AVE, Indiana, PA

Built 1961 Load: 29.0 t ADT: 900

WILLOW AVENUE

Fair

Over: MARSH RUN

INT OF WILLOW & MARYLAND, Indiana, PA

Built 1954 Load: 29.0 t ADT: 950

SR 75-PA 75

Fair

Over: TUSCARORA CREEK

1 MI S WATERLOO, Juniata, PA

Built 1940 Load: 29.0 t ADT: 751

SR 2015

Fair

Over: LITTLE COCOLAMUS CREEK

1 MI N COCOLAMUS, Juniata, PA

Built 1938 Load: 29.0 t ADT: 515

SR 3002

Fair

Over: LOST CREEK

CUBA MILLS, Juniata, PA

Built 1930 Load: 29.0 t ADT: 3,714

SR 3008

Fair

Over: MILL RACE CREEK

ACADEMIA, Juniata, PA

Built 1928 Load: 29.0 t ADT: 295

SR 3020

Fair

Over: LICK RUN

1MI NW PERULACK, Juniata, PA

Built 1996 Load: 29.0 t ADT: 58

ON TSR 544

Fair

Over: DELAWARE CREEK

125 FT W OF SR 235, Juniata, PA

Built 1950 Load: 29.0 t ADT: 477

SR 0081 I-81 SB

Fair

Over: RR & SPRINGBROOK CREEK

MOOSIC BORO .2 M S TR 502, Lackawanna, PA

Built 1955 Load: 29.0 t ADT: 28,205

SR 0081 I-81 NB

Fair

Over: TWP RD 444 SCOTT ROAD

S ABINGTON OVR TWP RD 444, Lackawanna, PA

Built 1961 Load: 29.0 t ADT: 14,476

SR 1015

Fair

Over: SR 0081 I-81 NB & SB

GREENFIELD TWP OVER I-81, Lackawanna, PA

Built 1961 Load: 29.0 t ADT: 167

US 30; SR 0030

Fair

Over: Fifth St-Columbia Boro

Columbia Boro, Lancaster, PA

Built 1970 Load: 29.0 t ADT: 48,561

SR 4051

Fair

Over: US 30; SR 0030

N. OF MOUNTVILLE BORO., Lancaster, PA

Built 1965 Load: 29.0 t ADT: 2,318

1074;T662 Miley

Fair

Over: 222

DIAMOND SPRINGS-W EARL TP, Lancaster, PA

Built 1970 Load: 29.0 t ADT: 57

PA 283 EB; SR 0300

Fair

Over: LANC.CO.PARK TRAIL

1/4 MI. E. OF CONEWAGO CR, Lancaster, PA

Built 1968 Load: 29.0 t ADT: 21,988

PA 283 WB; SR 0300

Fair

Over: CONEWAGO REC. TRAIL

1/4 MI. E. OF CONEWAGO CR, Lancaster, PA

Built 1968 Load: 29.0 t ADT: 23,485

PA 283 EB; SR 0300

Fair

Over: T-843; SCHWANGER RD.

2 MI.S.W. OF MILTON GROVE, Lancaster, PA

Built 1969 Load: 29.0 t ADT: 24,666

PA 283 WB; SR 0300

Fair

Over: T-843; SCHWANGER RD

2 MI.S.W. MILTON GROVE, Lancaster, PA

Built 1969 Load: 29.0 t ADT: 25,164

PA 283 EB; SR 0300

Fair

Over: SR 4033 MILTON GROVE RD.

2 MI.N. MT. JOY BORO, Lancaster, PA

Built 1968 Load: 29.0 t ADT: 24,666

PA 283 WB; SR 0300

Fair

Over: SR 4033 Milton Grove Rd

2 MI.N. OF MT. JOY, Lancaster, PA

Built 1968 Load: 29.0 t ADT: 25,164

PA 283 EB; SR 0300

Fair

Over: PA 230; SR 0230

PA283 PA230 INTERSECTION, Lancaster, PA

Built 1968 Load: 29.0 t ADT: 24,666

PA 324; SR 0324

Fair

Over: TRIB PEQUEA CREEK

MARTIC FORGE, Lancaster, PA

Built 1970 Load: 29.0 t ADT: 2,159

SR 3015; TWP RD

Fair

Over: ENOLA LOW GRADE TRAIL

SW OF NEW PROVIDENCE, Lancaster, PA

Built 1938 Load: 29.0 t ADT: 850

SR 4001 SpookyNook

Fair

Over: SR 4020; AMTRAK

W. of Salunga, Lancaster, PA

Built 1969 Load: 29.0 t ADT: 7,762

LR137 US 322

Fair

Over: PA TPK (I-76)

ELIZABETH TWP, Lancaster, PA

Built 1949 Load: 29.0 t ADT: 6,807

T700 POOL FORGE RD

Fair

Over: CONESTOGA RIVER TRIB

750 FT SOUTH OF SR 23, Lancaster, PA

Built 1963 Load: 29.0 t ADT: 720

T-966 MILLER RD

Fair

Over: LITTLE COCALICO CREEK

1/2 MI EAST OF SR 1045, Lancaster, PA

Built 1945 Load: 29.0 t ADT: 515

T-598 CLAY RD

Fair

Over: HAMMER CREEK

2000 FT NORTH OF SR 1024, Lancaster, PA

Built 1973 Load: 29.0 t ADT: 310

SR 0422 EB

Fair

Over: 376 TOLL & RMP N EB

SR 0422 EB OVER I-376, Lawrence, PA

Built 1972 Load: 29.0 t ADT: 6,622

SR 422 WB

Fair

Over: SHEN R ISS. EASX BOLT ST

250N.W.OF SR 0168, Lawrence, PA

Built 1972 Load: 29.0 t ADT: 6,190

VILLA MARINA RD.

Fair

Over: BR.COFFEE RUN

1/4 MI. SOUTH TWP.RD.505, Lawrence, PA

Built 1961 Load: 29.0 t ADT: 211

US 322; Horseshoe

Fair

Over: Abandoned Railroad

CORNWALL BOROUGH, Lebanon, PA

Built 1963 Load: 29.0 t ADT: 6,807

EAST MAIN ST T-500

Fair

Over: OWL RUN

E MAIN EXTENDED MYERSTOWN, Lebanon, PA

Built 1930 Load: 29.0 t ADT: 500

SR 1016(BROAD ST.)

Fair

Over: SR 378(LR 1007)

BROAD ST. BETHLEHEM, Lehigh, PA

Built 1967 Load: 29.0 t ADT: 12,783

BRIDGE STREET

Fair

Over: COPLAY CREEK

JUST S. OF EGYPT, Lehigh, PA

Built 1955 Load: 29.0 t ADT: 100

KOZY KORNER LANE

Fair

Over: SAUCON CREEK

WEST OF LIMEPORT PIKE, Lehigh, PA

Built 1990 Load: 29.0 t ADT: 90

PARK ENTRANCE

Fair

Over: LITTLE LEHIGH CREEK

CATALINA AVE. BRIDGE, Lehigh, PA

Built 1941 Load: 29.0 t ADT: 100

PA TPK (I-476)

Fair

Over: SR 3008 LR39043

NEAR ALLENTOWN, Lehigh, PA

Built 1956 Load: 29.0 t ADT: 30,563

SR 0011 TR 11

Fair

Over: SHICKSHINNEY CREEK

SHICKSHINNY BO JCT TR 239, Luzerne, PA

Built 1973 Load: 29.0 t ADT: 6,745

SR 0081 I-81 SB

Fair

Over: LITTLE WAPWALLOPEN CREEK

RICE TWP .9 M S SR 2042, Luzerne, PA

Built 1964 Load: 29.0 t ADT: 17,836

SR 2002

Fair

Over: NANTICOKE CREEK

HANOVER TWP .1 M S TR 29, Luzerne, PA

Built 1955 Load: 29.0 t ADT: 14,016

SR 2042

Fair

Over: SR 0081 I-81 SB EXIT 159

RICE TWP OVER I-81 SB, Luzerne, PA

Built 1964 Load: 29.0 t ADT: 5,054

SR 15 NORTHBOUND

Fair

Over: OVER HAGERMANS RUN

BORO OF S WILLIAMSPORT, Lycoming, PA

Built 1950 Load: 29.0 t ADT: 11,767

SR 0015 SB

Fair

Over: OVER (S-C)LYCO.VALLEY RR

WMSPT(NEAR BOWMAN FIELD), Lycoming, PA

Built 1972 Load: 29.0 t ADT: 14,984

SR 0044

Fair

Over: OVER UPPER PINE BOT RUN

3 MI NW OF WATERVILLE, Lycoming, PA

Built 1934 Load: 29.0 t ADT: 371

S.R. 118

Fair

Over: OVER GREGGS CREEK

0.25 MI E OF HUGHESVILLE, Lycoming, PA

Built 1930 Load: 29.0 t ADT: 3,914

Showing 2,701-2,750 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.