Ongoing construction will impact 4th Ave near the downtown Mayo Clinic campus. Patients are encouraged to view routing information for how to navigate closures downtown.

4th Ave NW and 1st St NW

Starting July 26, underground utility work will temporarily alter traffic patterns:

• 4th Ave NW will be closed to through traffic between the intersection of 1st St SW and W Center St through fall 2025.
• A temporary two-way traffic pattern will be in place on 4th Ave NW between 2nd St NW and 1st St NW, allowing local access and enabling vehicles to exit the Graham Parking Ramp by heading north.
• 1st St NW will be closed to through traffic between 3rd Ave NW and 5th Ave NW through fall 2025.

4th Ave SW and 1st St SW

Construction fencing around the former Damon Parking Ramp and Ozmun Building sites will extend into adjacent roadways:

• 4th Ave SW, between West Center St and 1st St SW, will be reduced to a single southbound lane. Access to the West Gonda entrance will be maintained through spring 2026.
• 4th Ave SW, between 1st St SW and 2nd St SW, is permanently closed to through traffic.
• 1st St SW, between 6th Ave SW and 4th Ave SW, is closed to through traffic, but one lane remains open for local access.

Traffic control workers will be stationed at key intersections during peak hours to help manage traffic.