RFB-24-2016 - Chapman Drive Flood Damage Repair and Mitigation

Summary of Specifications:
This project consists of repairing a flood damaged 10’ wide access road and trail (Chapman Drive) on property owned by City of Boulder Open Space and Mountain Parks. This road experienced damage varying in character, from minor surface erosion to complete washout. The objective of this project is to repair the road to pre-disaster function and capacity while also making modifications to the grading to reduce vulnerability to damage by future flood events. Work will include reconditioning of existing grades, repairing erosion damage to existing subgrade, transport, processing and placement of existing stockpiled material along Flagstaff Road, west of the project, grading of ditches, installation of culverts, construction of stone masonry drainage structures, construction of drainage features, placement of new surfacing material, and site restoration. The project also includes improvements to the parking and access drive at the “Top Shop” near the upper end of the project, off Flagstaff Road.