Minnehaha County 3-Cell Cast-in-Place Box Culvert
CDI was selected by Minnehaha County to perform all work necessary to replace a structurally deficient 32’ simple span I-beam bridge over an unnamed creek on 245th Street. CDI performed all bridge inspections for the Minnehaha County Highway Department in 2012 and recommended replacement of this structure due to the poor condition of the substructure. CDI performed a hydraulic survey and completed a hydraulic analysis to size the structure. CDI also presented four options for replacement, a slab bridge, large round pipe, a cast-in-place box culvert, and a precast box culvert. The bridge and large pipe were ruled out in early planning of the structure replacement. Both box culvert options were designed and included for bidding to achieve the most cost effective design alternative. The cast-in-place alternative was chosen as a result of bids coming in approximately $45,000 under the precast alternative. CDI completed construction plans for both the cast-in-place and precast box culvert options along with the structure and grading design and administered construction administration and construction observation services for the Minnehaha County Highway Department.
Dell Rapids, SD