Lacrosse Street and 1-90 Interchange

This $17.5 million project will be the first Diverging Diamond Interchange in South Dakota.  The purpose of this project is to improve traffic flow and improve safety at this interchange.  The project consists of bridge widening and modifications to accommodate the new DDI.  Reconstruction of ramps and the addition of auxiliary lanes for both east and westbound traffic, pedestrian, and bicycle improvements, lighting, and signal improvements, and other utility improvements.  The project began in 2021 and has a 2023 completion date.  For further project information and a video simulation of the project and traffic flow, see the link below.https://i90lacrosseddi.com/construction.html