Frame bridges
A rigid frame where the deck and the supporting legs are a single continuous structure. The inventory lists 6,335 of them, 1.0% of all US bridges.
- Bridges
- 6,335
- Share of all bridges
- 1.0%
- Poor condition
- 2.4%
- 150 bridges
- Average age
- 45.3 yrs
- Combined length
- 70 mi
- Oldest
- 1860
Frame bridges by state
| State | Frame | Share of state's bridges |
|---|---|---|
| New York | 1,117 | 6.3% |
| Ohio | 702 | 2.6% |
| Idaho | 639 | 13.8% |
| Oregon | 306 | 3.7% |
| New Hampshire | 292 | 11.5% |
| Virginia | 234 | 1.7% |
| Illinois | 233 | 0.9% |
| Pennsylvania | 225 | 1.0% |
| Washington | 206 | 2.4% |
| Utah | 203 | 6.5% |
| Colorado | 201 | 2.2% |
| New Jersey | 195 | 2.9% |
| Massachusetts | 192 | 3.6% |
| Connecticut | 189 | 4.3% |
| California | 154 | 0.6% |
| Arizona | 97 | 1.1% |
| Maryland | 96 | 1.7% |
| Wisconsin | 91 | 0.6% |
| Texas | 76 | 0.1% |
| Oklahoma | 65 | 0.3% |
| Mississippi | 62 | 0.4% |
| Tennessee | 62 | 0.3% |
| Maine | 56 | 2.2% |
| Vermont | 53 | 1.8% |
| West Virginia | 52 | 0.7% |
| Wyoming | 52 | 1.7% |
| Minnesota | 49 | 0.4% |
| Florida | 31 | 0.2% |
| North Carolina | 29 | 0.1% |
| Puerto Rico | 27 | 1.1% |
| New Mexico | 26 | 0.6% |
| Missouri | 25 | 0.1% |
| Hawaii | 24 | 2.0% |
| Indiana | 24 | 0.1% |
| South Dakota | 24 | 0.4% |
| Alabama | 24 | 0.1% |
| District of Columbia | 21 | 8.0% |
| Georgia | 21 | 0.1% |
| Rhode Island | 21 | 2.7% |
| Arkansas | 20 | 0.2% |
| Nebraska | 19 | 0.1% |
| Nevada | 19 | 0.9% |
| Michigan | 18 | 0.2% |
| Iowa | 17 | 0.07% |
| Kentucky | 15 | 0.1% |
| South Carolina | 9 | 0.09% |
| Kansas | 8 | 0.03% |
| Montana | 6 | 0.1% |
| Delaware | 2 | 0.2% |
| North Dakota | 2 | 0.05% |
| U.S. Virgin Islands | 2 | 8.3% |
| Louisiana | 1 | 0.01% |
| Alaska | 1 | 0.06% |
Materials used
| Concrete | 81.1% |
| Concrete Continuous | 13.9% |
| Steel Continuous | 2.6% |
| Steel | 1.4% |
| Prestressed Concrete | 0.7% |
| Aluminum, Wrought Iron, or Cast Iron | 0.1% |
When they were built
Busiest
- Interstate 80 over Buried WalkwayFairAlameda County, California · 531,000 vehicles/day
- Interstate 210 EB over MetrolinkGoodLos Angeles County, California · 290,000 vehicles/day
- I-95 (upper Level) over I-95 TunnelsGoodBergen County, New Jersey · 271,197 vehicles/day
- Interstate 210 EB over Abandoned RR RowGoodLos Angeles County, California · 269,000 vehicles/day
- Interstate 210 over Kinneloa AveFairLos Angeles County, California · 269,000 vehicles/day
Longest
- Upper Vehicledrive over Airport Terminal & ParkFairMiami-Dade County, Florida · 3,658 ft
- RTE I278 over RTE I278 Brklyn PromenaPoorKings County, New York · 3,604 ft
- Walnut Street over Schuylkill 24th RR 32 31FairPhiladelphia County, Pennsylvania · 2,408 ft
- Wv 09 over Shen.Rvr;race;accsrdFairJefferson County, West Virginia · 1,654 ft
- SR 3011 (lr 48096) over City Sts River Can NsrcFairNorthampton County, Pennsylvania · 1,466 ft
Oldest
- Central Drive over Ped Opp 63rd STFairNew York County, New York · Built 1860
- Harrison CR 5/29 over Tenmile CreekFairHarrison County, West Virginia · Built 1891
- Walnut Street over Schuylkill 24th RR 32 31FairPhiladelphia County, Pennsylvania · Built 1892
- NH149 over Contoocook RiverFairHillsborough County, New Hampshire · Built 1893
- HWY Beacon ST over RR Mbta/BmrrFairMiddlesex County, Massachusetts · Built 1899