Detailed design of the substructure of six vehicular bridges, two permanent and four temporary during construction of the White River Hydro Project in northern Ontario. This hydro project is a joint venture of Regional Power with Pic Mobert First Nation. There are two separate generation sites at 10 km distance.
The bridge superstructures consist of simply supported spans ranging from 20 to 30 m in length and 7.2 m wide that accommodates two lanes. The superstructure consists of modular panel steel trusses (Mabey bridges). One of the main challenges was the layout of the bridges to minimize site impact and accommodate the bridges in a complex mountainous terrain with steep rock-cuts and high grades. The design required 3D models to determine where to place the bridges.
Foundations consists of cast-in-place concrete stub abutments on sound rock or compacted granular fill. The design was made in accordance with CAN/CSA S-6 Code.
The construction cost of this project is over CAN $105 M.