| Bridge Name: | Mile-Long Bridge |
| Carries: | 8 lanes of |
| Crosses: | Des Plaines River Ship and Sanitary Canal BNSF Chillicothe Subdivision CN Joliet Subdivision Chicago Intermodal Facility |
| Locale: | Willow Springs, IL |
| Maint: | Illinois State Toll Highway Authority |
| Id: | 000016095903931 |
| Design: | Steel girder |
| Length: | 1404.5disp=flipNaNdisp=flip |
| Width: | 12.8disp=flipNaNdisp=flip |
| Traffic: | 150,000[1] |
| Open: | 1958[2] |
| Rebuilt: | 2022[3] |
| Coordinates: | 41.7504°N -87.8652°W |
The Mile-Long Bridge is the colloquial name for a 1404.5m (4,607.9feet) bridge in the northeastern part of the U.S. state of Illinois. The bridge carries Interstate 294 (I-294) over the Des Plaines River, the Chicago Ship and Sanitary Canal, two major railroad lines, and an intermodal facility. A series of 51 piers carries I-294 over the broad Des Plaines River valley.
In spite of its name, the bridge falls 672feet short of one full mile in length.
As part of the Central Tri-State Tollway Project, construction of a new Mile-Long Bridge structure, together with demolition of the original 1958 structure, proceeded in phases commencing in 2019.[4] In the first completed phase of the project, a new northbound bridge structure opened to traffic in November 2020. Demolition of the old northbound structure commenced in 2021, followed by the construction of a new southbound structure. The completed southbound structure opened to traffic in October 2022. Removal of the old southbound structure is expected to be complete in 2023.[3]