WisDOT I-39 at Avalon Road: Diverging Diamond Interchange

Avalon Road was in need of improvements to ensure safety, address the increase in traffic and congestion, and support the I-39 economic corridor. The existing interchange of I-39 and Avalon Road was completely reconfigured into a diverging diamond interchange – the first of its kind in the State. New bridge structures were constructed along with drainage, signing, sign structures, traffic signals, and lighting. The scope of work also included excavation, embankment, pavement marking, temporary traffic signals, and landscaping.

Cotter managed and inspected pavement removal, concrete paving, curb and gutter installation, asphalt paving, traffic control, sign installation, and storm sewer work. In support of the Wisconsin DOT Project Manager, Cotter provided field inspection, materials coordination, schedule review, cost and change management, and utility coordination.

Avalon, Wisconsin



Project completion

Project Team

It was an honor to be a part of the team that built the first Diverging Diamond Interchange in the state of Wisconsin. This type of interchange brings a significant improvement in safety and efficiency; two major aspirations for me as an engineer.

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