US Bridges

Suspension bridges

A deck hung from cables draped between towers. Used for the longest spans. The inventory lists 96 of them, 0.02% of all US bridges.

Bridges
96
Share of all bridges
0.02%
Poor condition
20.8%
20 bridges
Average age
86.2 yrs
Combined length
77 mi
Oldest
1848

Suspension bridges by state

StateSuspensionShare of state's bridges
New York200.1%
California130.05%
Pennsylvania110.05%
New Jersey70.1%
Washington50.06%
Ohio40.01%
Texas40.01%
Missouri30.01%
Oregon30.04%
Delaware20.2%
Idaho20.04%
Illinois20.01%
Kentucky20.01%
Maine20.08%
Maryland20.04%
Rhode Island20.3%
West Virginia20.03%
Arkansas20.02%
Florida10.01%
Iowa10.00%
Massachusetts10.02%
Michigan10.01%
Minnesota10.01%
Montana10.02%
Utah10.03%
Colorado10.01%

Materials used

Steel77.1%
Steel Continuous16.7%
Wood or Timber4.2%
Aluminum, Wrought Iron, or Cast Iron2.1%

When they were built

<1900: 10 bridges10<19001900s: 8 bridges819001910s: 2 bridges219101920s: 13 bridges1319201930s: 22 bridges2219301940s: 4 bridges419401950s: 11 bridges1119501960s: 14 bridges1419601970s: 2 bridges219701980s: 1 bridges119801990s: 2 bridges219902000s: 4 bridges420002010s: 3 bridges320102020s: 0 bridges2020
Suspension bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

  1. 95I 95I04011007 over 9A 9A04021108/HUDSON Rvr
    Bergen County, New Jersey · 306,177 vehicles/day
    Fair
  2. 95I 95I04011007 over 9A 9A04121108/HUDSON Rvr
    Bergen County, New Jersey · 288,046 vehicles/day
    Fair
  3. RTE I95 over AMTRAK Railroad Fort Wa
    New York County, New York · 271,808 vehicles/day
    Fair
  4. RTE I95 over AMTRAK Railroad Fort Wa
    New York County, New York · 268,692 vehicles/day
    Fair
  5. Interstate 80 over Gate San Francisco Bay
    San Francisco County, California · 265,000 vehicles/day
    Good

Longest

  1. US RTE 50 EB over Chesapeake Bay
    Anne Arundel County, Maryland · 21,289 ft
    Fair
  2. US RTE 50 WB over Chesapeake Bay
    Anne Arundel County, Maryland · 21,051 ft
    Fair
  3. I-75 over Straits of Mackinac
    Emmet County, Michigan · 19,248 ft
    Fair
  4. RTE I278 over Bronx Kills CSX Harlem
    Queens County, New York · 13,110 ft
    Fair
  5. I-76 over I-676 SB I-95 & Del Riv
    Camden County, New Jersey · 11,693 ft
    Fair

Oldest

  1. Access Road over Delaware River
    Suffolk County, New York · Built 1848
    Fair
  2. Access Road over Delaware River
    Pike County, Pennsylvania · Built 1848
    Fair
  3. Wv Route 251 over Ohio River
    Ohio County, West Virginia · Built 1849
    Poor
  4. Ky 17 over Ohio River
    Kenton County, Kentucky · Built 1867
    Poor
  5. CR-600 Roebling over US27 & Ohio River
    Hamilton County, Ohio · Built 1867
    Fair