Crews installed the culvert with an Akkerman Series II 720 TBM and tunnel boring system in under a week’s time. The ground conditions comprised compacted sand and sandy clay.
The new culvert will assist in the conveyance of Hotchkiss Creek and features a 0.3m culvert embedment below the creek to facilitate fish migration. The work is part of the Highway 400 widening project, which will replace a six-lane overpass structure. Morrison Hershfield is the project’s designer.
