WENTZVILLE PARKWAY SOUTH EXTENSION PHASE 1 AND 2
The interchange improvements to Wentzville Parkway at I-70 will remove the existing eastbound
on-ramp and fold it to move the ramp terminal to the outer road. Traffic southbound on
Wentzville Parkway attempting to head east on Interstate 70 will make a right turn at the south
outer road (Veterans Memorial Parkway), and then a U-Turn at a proposed roundabout to access
the interstate. This configuration allos the predominate movement at the interchange, southbound
to eastbound, to be performed through a series of right turns, rather than a left turn at a signalized
intersection. The relocations of the eastbound on-ramp also allows for a longer acceleration lane
for this movement in advance of a curve along the interstate.
May 2019: Notice to Proceed was issued to the design consultant.
March 2020: Preliminary Plans approved by MoDOT.
August 2020: Right of Way Plans approved by MoDOT. Land Acquisition process is not
underway.
Anticipated Construction to Begin Spring 2021
Phase 2:
The Wentzville Parkway South Phase 2 improvement project will build upon the Wentzville
Parkway South Phase 1 project by extending Wentzville Parkway South to Interstate Drive. The
proposed cross section will include a two-lane cross section with curb and gutter and curb inlets
along the east side of roadway and an improved shoulder on the west side that will drain to an
open ditch system. The cross section will allow for future expansion to a five lane cross section
when traffic demands call for it. The proposed project also proposes to build a 6 foot sidewalk
along the east side of the roadway that will connect to the recently constructed Intetstate Drive
Trail. Also proposed as part of this project is the construction of a grade separated crossing at the
Norfolk Southern Railway.
May 2019: Notice to Proceed was issued to the design consultant.
January 2020: Preliminary Plans completed.
August 2020: Right of Way Plans completed and land acquisition process has begun.
Anticipated Construction to Begin Spring 2022
For question regarding this project please contact Tony Gambaro, Senior Project Manager
at Anthony.Gambaro@wentzvillemo.org
