Box Beam or Girders - Single or Spread bridges
One or a few hollow box girders spaced apart beneath the deck, often used for longer spans and curved alignments. The inventory lists 8,447 of them, 1.4% of all US bridges.
- Bridges
- 8,447
- Share of all bridges
- 1.4%
- Poor condition
- 1.3%
- 108 bridges
- Average age
- 32.1 yrs
- Combined length
- 374 mi
- Oldest
- 1850
Box Beam or Girders - Single or Spread bridges by state
| State | Box Beam or Girders - Single or Spread | Share of state's bridges |
|---|---|---|
| Tennessee | 2,014 | 9.9% |
| Indiana | 764 | 3.9% |
| North Dakota | 679 | 16.0% |
| Arizona | 609 | 7.1% |
| Kentucky | 559 | 3.8% |
| Missouri | 520 | 2.1% |
| Michigan | 442 | 3.9% |
| Colorado | 430 | 4.8% |
| California | 328 | 1.3% |
| Mississippi | 278 | 1.7% |
| Nevada | 246 | 11.6% |
| Florida | 229 | 1.8% |
| Massachusetts | 200 | 3.8% |
| Georgia | 111 | 0.7% |
| Washington | 106 | 1.2% |
| Oregon | 97 | 1.2% |
| West Virginia | 92 | 1.3% |
| Connecticut | 85 | 1.9% |
| Idaho | 65 | 1.4% |
| New York | 61 | 0.3% |
| New Mexico | 59 | 1.5% |
| New Jersey | 54 | 0.8% |
| Texas | 53 | 0.09% |
| Ohio | 51 | 0.2% |
| Pennsylvania | 50 | 0.2% |
| Wisconsin | 40 | 0.3% |
| Illinois | 37 | 0.1% |
| Maryland | 32 | 0.6% |
| Delaware | 22 | 2.5% |
| North Carolina | 20 | 0.1% |
| South Carolina | 17 | 0.2% |
| Virginia | 14 | 0.10% |
| Maine | 10 | 0.4% |
| Hawaii | 9 | 0.8% |
| Rhode Island | 8 | 1.0% |
| Alabama | 8 | 0.05% |
| Puerto Rico | 6 | 0.2% |
| District of Columbia | 4 | 1.5% |
| Louisiana | 4 | 0.03% |
| Utah | 4 | 0.1% |
| Wyoming | 4 | 0.1% |
| Alaska | 4 | 0.2% |
| Minnesota | 3 | 0.02% |
| Montana | 3 | 0.06% |
| Nebraska | 3 | 0.02% |
| South Dakota | 3 | 0.05% |
| Iowa | 2 | 0.01% |
| New Hampshire | 2 | 0.08% |
| Oklahoma | 2 | 0.01% |
| Vermont | 2 | 0.07% |
| Arkansas | 2 | 0.02% |
Materials used
| Prestressed Concrete | 42.7% |
| Prestressed Concrete Continuous | 37.5% |
| Concrete Continuous | 10.5% |
| Steel Continuous | 4.5% |
| Concrete | 2.6% |
| Steel | 2.1% |
When they were built
Busiest
- SR 101L over Cave Creek RoadGoodMaricopa County, Arizona · 282,818 vehicles/day
- Ramp to I-10 NW over I 10 MainlineFairPima County, Arizona · 281,068 vehicles/day
- Interstate 405 over Getty Center DriveGoodLos Angeles County, California · 274,000 vehicles/day
- State Route 60 over Pomona BlvdFairLos Angeles County, California · 250,000 vehicles/day
- Interstate 210 over Little Dalton WashGoodLos Angeles County, California · 250,000 vehicles/day
Longest
- Sc 30 over Ashley Riv & Wappoo CrkFairCharleston County, South Carolina · 11,297 ft
- I110 SR8A over I110 & City StreetsFairEscambia County, Florida · 8,136 ft
- I110 SR8A over City StreetsFairEscambia County, Florida · 7,746 ft
- I 90 over I 90B;CANYON CRFairShoshone County, Idaho · 4,478 ft
- EBI-595 to NBI-95 over I-595 SW Conn. NE Conn.GoodBroward County, Florida · 4,055 ft
Oldest
- HWY W Britannia over Water Mill RiverGoodBristol County, Massachusetts · Built 1850
- HWY Dean RD over TR Green Line DGoodNorfolk County, Massachusetts · Built 1850
- HWY Adams ST over Water Monatiquot RiverGoodNorfolk County, Massachusetts · Built 1886
- 12th ST over Pogues RunGoodMarion County, Indiana · Built 1903
- HWY UPR Cnty Bri over Water Merrimack RiverGoodEssex County, Massachusetts · Built 1906