56th and Colfax Storm Drain Project
The Havelock Salt Creek Watershed has been studied and analyzed to determine deficiencies in the existing stormwater system. The drainage study completed a hydrologic and hydraulic analysis for both the minor events (5-year and 10-year) and major event (100-year) throughout the watershed. Several locations were identified for proposed projects to address the deficient drainage systems.
The stormwater system located along Colfax Avenue between Touzalin Avenue and N. 56th Street was determined to be undersized for the drainage area flowing toward the system. The existing system consists of storm sewer inlets and a 42-inch trunk line that cannot convey the flows for this area. This project will consist of analyzing two different alternatives to increase the capacity of the trunk line. Each option will be designed to 30% plans and then compared to determine the preferred alignment to proceed toward final design. Cost, feasibility, and effectiveness will all be factors in selecting the final design route.
- Replace the existing 42-inch pipe with a 5-foot x 5-foot concrete box culvert.
- The new box culvert will follow the same alignment as the existing system.