I-90 Mississippi River Bridge Approaches and US 61/14 Interchange Final Design

Dresbach, Minnesota & La Crosse, Wisconsin

SRF led a team of 10 subconsultants for the complete reconstruction of the roadway approaches to I-90 (which spans the Mississippi River), three miles of retaining walls, and seven inland bridges (four of which are complex steel curved bridges) as part of the overall interchange design. The team for this highly complex project provided final plans on an aggressive schedule for $100 million of infrastructure improvements.

SRF coordinated with two state Departments of Transportation (MnDOT and WisDOT) and several federal agencies, including the US Fish & Wildlife Service, prepared complex construction staging and maintenance of traffic plans, and met strict drainage parameters due to the proximity of the Mississippi River. The project included coordinating with the I-90 river bridge structure designs (performed by another consultant) and incorporating Wisconsin approach roadways, which are being realigned due to the shifting of the new river bridges.

SRF also led a visual quality exercise to incorporate aesthetic value to the river bridges and interchanges and conducted regular project management meetings and design reviews to assist in acquiring design approvals in an expeditious manner. In addition, SRF developed a Design Quality Management Plan and Project Manual to keep the team coordinated and promote high quality designs. A Critical Path Method (CPM) schedule was used to monitor project progress and identify areas of schedule concern.

CLIENT: MnDOT and WisDOT

AWARD: American Council of Engineering Companies of Minnesota 2018 Engineering Excellence Grand Award