From Metro St. Louis website:
Winter Weather Alert - Significant MetroLink Delays in Missouri & Illinois
DETAILS
11 a.m.
MetroLink
MetroLink is currently not operating between Lambert Airport and UMSL South MetroLink Stations in Missouri, and MetroLink is not operating between the Emerson Park and Shiloh-Scott MetroLink Stations in Illinois due to ice accumulation on the overhead lines that power the trains. MetroLink Station Shuttles are currently transporting passengers by bus between these stations.
Passengers traveling through the affected areas should expect significant delays of up to 60 minutes.
