CSAH 1 (CSAH 47 to CSAH 16) Reconstruction Project

Project Description: Olmsted County is leading a project to realign and reconstruct approximately 3 miles of County State Aid Highway (CSAH) 1 from the CSAH1/CSAH 47 roundabout to CSAH 16 in Simpson.

Open House - July 16, 2025.

Olmsted County is hosting a public open house on July 16th, 2025, from 4:00pm to 6:30pm at the Olmsted County Public Works Service Center – 1188 50th Street SE, Rochester, MN) for the Olmsted County State Aid Highway (CSAH) 1 Reconstruction Project. Olmsted County is leading a project to reconstruct and realign approximately 3 miles of CSAH 1 from CSAH 1/CSAH 47 Roundabout to CSAH 16 in Simpson. Please join us at the open house to learn more about the project, talk to staff, and to provide comment. Materials shared at the open house will be posted here after the open house. Click on the link here to take our survey and provide comments (available for 2 weeks after the open house).

Anticipated project schedule: Spring 2025- Winter 2026 - Design and Right of Way Acquisition | Spring 2027 - Construction

Public Works contact: Assistant County Engineer, Nathan Arnold 507-328-7060 | nathan.arnold@olmstedcounty.gov