City of Dubuque issued the following announcement on Jan. 29.
Alternating Lane Closures and Traffic Shifts on US20 Westbound on Wednesday
Beginning Wed, Jan. 31, due to SW Arterial/US52 and US Highway 20 interchange bridges construction, the westbound 2-lane traffic on US20 will shift & detour traffic onto the new westbound ramp for the Southwest Arterial interchange at Seippel Road.
Beginning on Wednesday, Jan. 31, in preparation for construction for the Southwest Arterial/US52 and US Highway 20 interchange bridges, the westbound 2-lane traffic on US20 will shift and detour traffic onto the newly constructed westbound ramp for the Southwest Arterial interchange at Seippel Road. The transition will require
alternating westbound lane closures between 9 a.m. and 2 p.m.
US20 westbound traffic will remain detoured onto the 2-lane westbound ramp until construction of the Southwest Arterial/US52 and US20 interchange is completed in the summer of 2019. The speed limit through the construction zone detour will be reduced and posted at 45 MPH.
Please note: closure dates/times are estimates and are subject to change without notification based on weather and contractor schedules.
Original source can be found here.