St. Charles County plans to realign the intersection of Route N and Route Z to a new four-way signalized intersection east of the current offset/”bowtie” intersection. Due to considerable existing traffic delays at the intersection, MoDOT was able to get federal funds through the East-West Gateway Council to reconstruct the intersection.
A project decades in the making reached another milestone on November 17, 2021, when the new David Hoekel Parkway (DHP) interchange officially opened to traffic at Interstate 70 in Wentzville. A ribbon-cutting ceremony was held on November 17 to commemorate its completion.
Work to reconfigure and improve the intersection at Hwys. N and Z has been delayed.