
Interstate 90, Exit 59 Westbound On-Ramp Opening as DDI is Implemented in Rapid City
For Immediate Release: Wednesday, April 26, 2023 Contacts: Brenda Flottmeyer, Project Engineer, 605-394-1638 Ellen Erickson, HDR Engineering,605-791-6115 RAPID CITY, S.D. – At approximately 1 p.m. on Thursday, April 27, 2023, the Interstate 90 …