Route Z Widening and Signalization

Route Z Widening and Signalization (Interstate Drive to Perry Cate
Boulevard):
This project will widen Route Z to a four-lane facility south of Interstate Drive to Perry
Cate Boulevard with dedicated left-turn and right-turn lanes at key side streets.
Associated with this widening is also the widening/ replacement of the bridge over
Peruque Creek to accommodate the four-lane cross-section and the extension of a
multi-use trail. The existing three-foot paved shoulders will be replaced with six-foot
wide shoulders. In addition to the pavement and bridge widening, this project also
will be adding a traffic signal at the intersection of Route Z and Peruque Hills
Parkway/ Peruque Ridge Boulevard.

September 2021: The City of Wentzville entered into a project agreement with
MoDOT for Cost Share funding and local maintenance funds.

February 2022: The City of Wentzville entered into a project agreement with St.
Charles County for use of St. Charles County Road Board Funds.

May 2022: City selected a design consultant and entered into an agreement with
Oates Associated for the design of this project.

July 2022: The design contract is being approved by MoDOT with the obligation of MoDOT
funding. Will anticipated the design to begin in August.

May 2023: Preliminary Plans are being drafted. Anticipate and Public Meeting fall
2023 for the project.

August 2025: Public Meeting Open House scheduled.

Aug. 25, 2025 – Join us for an Open House on Monday, Aug. 25, from 4:30-7 p.m. at Wentzville City Hall to learn more about the upcoming Route Z Widening Project. This project will expand Route Z between Interstate Drive and Perry Cate Boulevard to a four-lane roadway, add turn lanes at key intersections, widen the Peruque Creek bridge and include a new traffic signal at Highway Z and Peruque Hill Parkway/Peruque Ridge Boulevard. This is a jointly funded project between the City, St. Charles County and the Missouri Department of Transportation. Stop by anytime during the event to view project details and talk with the team.

Click here to see the Public Meeting exhibit.

To leave comments, that pertain to this project, click here

For questions, please contact Tony Gambaro, Assistant Director of Engineering at (636)639-2053, or email Tony.Gambaro@wentzvillemo.gov.