Site work and paving for a road / highway in Dubuque, Iowa. Conceptual plans call for site work for a road / highway; and for paving for a road / highway.

In 2022, the Iowa Department of Transportation (Iowa DOT) completed a study to evaluate operational and capacity improvements along US20, between Cresent Ridge and Old Highway, with a specific emphasis on the US20 / Northwest Arterial intersection. Several concepts and design variations were vetted, and a preferred alternative was selected. The proposed improvements recommend closing all at-grade accesses on the south side of US 20 between Old Highway and Crescent Ridge, close the south leg of the NW Arterial intersection, and add a new south side frontage road between Old Highway and Crescent Ridge. The plan also recommends closing all at-grade accesses on the north side of US 20 between Old Highway and Northwest Arterial and provide a new north side frontage road extending east from Old Highway intersection. Additionally, the project proposes adding dual eastbound left turn lanes onto the Northwest Arterial, adding a westbound bypass right turn lane onto the Northwest Arterial, and operational reconfiguration at the Northwest Arterial and Crescent Ridge intersections. In partnership with the Iowa DOT, the City has identified approximately $6 million to assist in funding the proposed US20 / Northwest Arterial intersection improvements, which will leverage a $12 million allocation from the Iowa DOT. The $18 million operational and capacity improvements have been recommended by Iowa DOT staff for consideration in the Iowa DOTs past FY25-29 and FY26-30 Transportation Improvement Programs, however, did not get funded. Iowa DOT staff will submit the project again in FY27-31 for Iowa DOT Commission consideration. The grant is yet to be awarded. The project is included in the City's 2027-2032 Capital Improvement Program (CIP). As of June 24, 2026, further details have not yet been identified. *Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.