West Side Transport, a Cedar Rapids-based transportation and logistics company, plans to build a new corporate headquarters in Cedar Rapids. The 50-year company announced plans for a new 50,000-square-foot building with office space and a maintenance shop on Sixth Street SW, just north of Tharp Road, east of Eastern Iowa Airport, the company said in a news release Wednesday.West Side Transport currently has a 35,000-square-foot facility at 4201 16th Avenue SW and operates terminals in five other Midwestern states.