Washington Avenue (CSAH 22) is one of the main north and south streets in Detroit Lakes, MN as it connects Highway 10 with the recreational facilities on Little Detroit Lake, as well as many of the downtown businesses and shops. The City reconstructed this corridor in multiple phases with Apex  leading the planning, design, and construction from Willow Street to Highway 10.

The City of Detroit Lakes and Becker County worked cooperatively to complete the reconstruction of Washington Avenue in accordance with MnDOT state aid standards. Project development included more than a year of public input meetings and focus group activities to ensure the design concept addressed various concerns and project goals. One critical component was the construction impacts to the local businesses. A detailed phasing and pedestrian access plan, including temporary boardwalks, was developed to minimize impacts during the busy tourist season. Significant traffic control and temporary signage was developed to provide temporary parking and efficiently direct traffic and pedestrians through downtown during construction.

The project was funded in part by CSAH funds, as well as special assessments, and local City funds. The project improvements included complete street and utility reconstruction coupled with street enhancements and streetscapes such as colored concrete sidewalks, intersections, crossings, intersection nodes, trees with decorative grates, underground irrigation, lighting, benches, bike racks, trash receptacles, and other amenities