7:01 p.m. Update

MoDOT confirms that the closures of Intestate 64 and Highway 141 have ended.

5:17 p.m. Update:

  According to the St. Louis County Office of Emergency Management, I-64 is now open in West. St. Louis County in both directions.

A MoDOT engineer confirms the following road closures to Patch as crews try to take advantage of a lull in weather conditions

• WB I-64 from Kingshighway to Hampton Ave. Est closure: 2 Hours
• NB 141 at Manchester. Est closure: 2 Hours
• I-64, both directions from I-270 to Missouri River. Est closure: 3.5 Hours.

MoDOT's St. Louis Maintenance Engineer Becky Allmeroth told Patch that the I-64 closure was already an hour in progress at approximately 4:45 p.m.

Allmeroth said the weather event has played out "almost exactly" as was expected, although there has been more accumulations of snow. She added that major arterials should be cleared in time for the Friday morning commute.

Forecasts do call for overnight freezing drizzle which could continue to complicate road conditions.

Allmeroth urged anyone needing to decide on travel Friday morning to consult www.modot.org to monitor conditions and for those who are in their vehicles to stay there instead of ditching them on the highway. She suggested attaching something red to the outside to draw attention.

This story will be updated