Planned Projects

  1. MO 370 Interchange Ramps 2 & 3 at Salt River Road - Planned for 2025


$12.6 million


This project includes the construction of Ramps 2 and 3 to connect eastbound/northbound MO 370 and I-70 with westbound Salt River Road. Ramp 2 will consist of a 14 foot wide concrete ramp extending from eastbound MO 370 to the westbound exit ramp from MO 370/Salt River Road ramp to Spencer Road. An auxiliary lane will be built on MO 370 between the westbound I-70 ramp and Ramp 2. Three new bridges will be constructed with Ramp 2 over Premier Parkway, MO 370, and the MO 370/Salt River Road interchange ramp. Ramp 3 will construct a new westbound exit ramp to Spencer Road. The westbound entrance ramp from Spencer Road to Salt River Road will be widened to accommodate westbound traffic. The project is eligible to receive15% Federal reimbursement funding, 55% MoDOT Cost Share funding, and 24% St. Charles County Road Board reimbursement funding.


Construction is expected to begin in 2025.

Aldermanic Ward

Board of Aldermen Ward 3

Related Materials

MO 370 Interchange Ramp 2 and 3 at Salt River Road Concept Map

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