The Challenge
Some sections of the TBI infrastructure are more than one hundred years old. To ensure the system functions properly, CRWD completes entire system inspections on a five-year cycle and performs minor maintenance and capital repairs. When TBI was transferred to CRWD from the Metropolitan Council in 2006, the District repaired two sections of pipe that were in poor condition. TBI is in a highly built-up urban environment, and in some cases, repair work has required street closures, utility relocation and pipe realignment.

Tunnel inspections in 2018

Placing box culvert sections beneath railroad next to 1-35E in 2012.