The conventional diamond interchange at I-435 and Front Street has been redesigned and will be reconstructed as a Diverging Diamond Interchange (DDI). The new DDI will accommodate more traffic and move it faster, decrease congestion, and increase safety. The most noticeable difference between the new interchange and the old is that Front Street will be improved as a pair of one-way streets that cross at two signalized intersections. Sometimes called a crossing diamond interchange, this revolutionary design is unlike any in North America and will be one of only two in the world.

Construction was anticipated to begin in 2008.  However, construction of the I-435/Front Street DDI will be postponed until there is an opportunity to construct it without affecting traffic flow on the I-29/35 corridor. MoDOT is committed to not disrupting traffic flow at I-435/Front Street and I-35/Front Street at the same time.