US Bridges

Box Beam or Girders - Multiple bridges

Hollow rectangular concrete beams placed side by side so their top flanges form the deck. The inventory lists 62,329 of them, 10.0% of all US bridges.

Bridges
62,329
Share of all bridges
10.0%
Poor condition
5.1%
3,156 bridges
Average age
38.6 yrs
Combined length
1,625 mi
Oldest
1832

Box Beam or Girders - Multiple bridges by state

StateBox Beam or Girders - MultipleShare of state's bridges
Illinois9,47835.2%
Ohio8,63632.3%
California8,08231.1%
Pennsylvania7,29431.3%
Indiana4,27821.9%
Kentucky3,95127.1%
Texas2,9855.2%
New York2,89116.4%
Michigan2,55522.4%
West Virginia2,06228.1%
Tennessee9794.8%
Missouri9363.8%
Oregon6317.6%
Washington6167.2%
New Jersey5668.3%
Colorado5466.1%
North Carolina5042.6%
Virginia4973.5%
Arizona4495.2%
Wisconsin4002.8%
Connecticut3698.5%
Georgia3602.4%
Nevada34116.1%
South Carolina3253.4%
Kansas3241.3%
Idaho2415.2%
Massachusetts2354.4%
North Dakota2044.8%
Maryland1963.6%
New Mexico1213.0%
Louisiana1190.9%
Delaware11513.2%
Hawaii1099.2%
Rhode Island9512.1%
Puerto Rico843.5%
Alabama710.4%
Oklahoma690.3%
Minnesota660.5%
New Hampshire652.6%
Alaska643.9%
Maine542.1%
Mississippi540.3%
Iowa520.2%
Vermont421.5%
Wyoming411.3%
Utah391.2%
South Dakota300.5%
Florida290.2%
Arkansas290.2%
Nebraska260.2%
Montana130.2%
District of Columbia103.8%
U.S. Virgin Islands14.2%

Materials used

Prestressed Concrete80.0%
Prestressed Concrete Continuous8.3%
Concrete Continuous7.0%
Concrete3.7%
Steel Continuous0.6%
Steel0.4%

When they were built

<1900: 97 bridges97<19001900s: 522 bridges52219001910s: 257 bridges25719101920s: 719 bridges71919201930s: 1,096 bridges1.1k19301940s: 485 bridges48519401950s: 1,911 bridges1.9k19501960s: 7,136 bridges7.1k19601970s: 8,697 bridges8.7k19701980s: 10,966 bridges11k19801990s: 12,196 bridges12k19902000s: 8,846 bridges8.8k20002010s: 7,193 bridges7.2k20102020s: 2,208 bridges2.2k2020
Box Beam or Girders - Multiple bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

  1. Interstate 80 over Gilman Street
    Alameda County, California · 550,000 vehicles/day
    Good
  2. Interstate 80 over Powell Street
    Alameda County, California · 531,000 vehicles/day
    Good
  3. State Route 60 over Prospectors Road
    Los Angeles County, California · 339,000 vehicles/day
    Good
  4. Route 60 over E60-N57 Connector Ramp
    Los Angeles County, California · 339,000 vehicles/day
    Good
  5. SR-429 NB over CR-437A
    Orange County, Florida · 334,750 vehicles/day
    Good

Longest

  1. LA3235 over Wetlands
    Lafourche Parish, Louisiana · 29,040 ft
    Fair
  2. US0090-B over Harvey Canal/Sts/Rr
    Jefferson Parish, Louisiana · 29,032 ft
    Fair
  3. US0090-B over Harvey Canal/Sts/Rr
    Jefferson Parish, Louisiana · 29,031 ft
    Fair
  4. RTE 10 & Ramps over RTE 110 & 29 Streets
    Los Angeles County, California · 21,918 ft
    Fair
  5. Interstate 280 over Caltrain UP RR City Sts
    San Francisco County, California · 21,588 ft
    Fair

Oldest

  1. Mt. Eyre Road over Delaware Canal
    Bucks County, Pennsylvania · Built 1832
    Fair
  2. Mechanic Street over Delaware Canal
    Bucks County, Pennsylvania · Built 1832
    Poor
  3. Union Mill Drive over Delaware Canal
    Bucks County, Pennsylvania · Built 1832
    Fair
  4. Island Road over Delaware Canal
    Bucks County, Pennsylvania · Built 1832
    Poor
  5. Island Road over Delaware Canal
    Bucks County, Pennsylvania · Built 1832
    Poor