Lake Saint Louis Boulevard Extension

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.

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