This is a multi-phase project by the City of O’Fallon for the extension of Lake St. Louis Blvd. from Highway N to Diehr Road / Highway DD.
- Phase 1 from Highway N to Haycastle Drive
- Phase 2 from Haycastle Drive to Paul Renaud Blvd. This includes the installation of a roundabout at the intersection of Lake St. Louis Blvd. and Paul Renaud Blvd.
- Phase 3 will extend the roadway from Paul Renaud Blvd. to Diehr Road / Highway DD.