The Columbus Drive extension was a highly successful Design Build project for Hillsborough County. The project was completed on schedule and on budget.
Cardno was the project engineer and provided design for all major roadway elements including roadway design, drainage, permitting, traffic signals, signing and pavement marking, lighting, water main extensions, and force main extension. Cardno was the engineering firm and sub to the prime contractor, Pepper Contracting Services. This project involved the design, permitting and construction of Columbus Drive, from east of US 301 to Falkenburg Road, approximately 1 mile in length.
The project included roadway, and utilities design for a new four-lane divided urban roadway. The typical section for the project consists of a four lane divided urban roadway with bicycle lanes, sidewalks along both sides of the roadway, roadway lighting and treatment.
The project also included underground drainage, stormwater treatment ponds, floodplain compensation and environmental mitigation areas. Due to the amount of wetland impacts, this project required an individual Environmental Resource Permit (ERP) from the Southwest Florida Water Management District (SWFWMD), which is a more intense SWFWMD permit application process than typical roadway improvement projects. Coordination with the local electric company was necessary due to electric power lines over the roadway.
Incidental Site Activities (Section J) was included in the ERP application package due to the aggressive project schedule. This area served by this project discharges to an impaired water body.
Innovative stormwater design techniques were utilized for this project, including treatment train methods, percolation filters and overflow ponds used for the pollutant loading analyses and water quality improvements.