In an ambitious effort to modernize one of Wisconsin's busiest highways, the Wisconsin Department of Transportation (WisDOT) has embarked on a significant renovation project along Interstate 43. This 14-mile stretch between Glendale and Grafton is set to undergo extensive improvements, with completion expected by the end of summer 2025. The project aims to expand the highway from four to six lanes, reconstruct five interchanges, and add a new interchange at Highland Road. Additionally, it includes the replacement of the Union Pacific railroad bridge over I-43 in Glendale and the expansion of Port Washington Road from two to four lanes. With traffic volumes exceeding design expectations, this project addresses both current and future transportation needs.

Detailed Updates on the Interstate 43 Modernization Project

In the picturesque landscape of Wisconsin, the I-43 North-South project has been underway since 2021, covering a distance from Bender Road in Glendale to Highway 60 in Grafton. By the end of summer 2025, motorists can expect substantial changes that will enhance travel efficiency and safety. The highway, which sees over 96,000 vehicles daily north of Silver Spring Drive, will be widened to accommodate growing traffic demands. Key milestones include the reconstruction of five major interchanges and the addition of a new interchange at Highland Road. Furthermore, the Union Pacific railroad bridge in Glendale will be replaced, and Port Washington Road will be expanded to four lanes.

During peak travel times in 2025, traffic will remain open to three lanes in each direction, except for within the Mequon Road interchange segment. Specific closures include the southbound ramps at Mequon Road (WIS 167), which will remain closed until late spring 2025. Detours have been established to ensure continued access for drivers. Similarly, construction between Brown Street and Capitol Drive will also conclude by summer’s end, with various lane closures affecting northbound and southbound traffic.

A smaller-scale resurfacing project will commence over the summer, focusing on the area between Oak Leaf Trail and Bender Road. Final details are being ironed out, but updates are expected this spring.

From a journalistic perspective, this project underscores the importance of infrastructure investment in supporting economic growth and enhancing public safety. The modernization of I-43 not only addresses immediate traffic congestion issues but also prepares the region for future transportation challenges. It highlights the need for proactive planning and sustainable development in rapidly growing areas.