BOISE - The I-184 Connector is back open Monday morning after slick conditions shut it down Sunday night.

Police blocked the on-ramps to I-184 for hours as they waited for road crews to put down de-icer. The Connector was reopened at about 1 a.m.

MORE: First big snowfall in the Treasure Valley means slick roads for Monday morning commute

Snow on Sunday created slushy and wet conditions on Treasure Valley roadways, turning into freezing conditions as temperatures dropped overnight. Many routes around the Valley - particularly in neighborhoods that have not yet been plowed - remain icy.

Drivers are urged to slow down and be careful on the roads, even if ice is not visible.