GRAND JUNCTION, Colo. (KREX) — A jack-knifed semi, led to a collision between 15 cars and another semi on Monday — shutting down I-70 for several hours in Glenwood Canyon.

KREX 5 talked to officials with the Colorado Department of Transportation, who say you can expect more interstate road closures, in the weeks ahead.

CDOT officials say they believe ice-packed portions of I-70 in the Canyon along with drivers ignoring posted warnings to slow down, caused the pile up.

CDOT Highway Maintenance Supervisor John David tells us travelers should prepare for the worst this winter especially if you drive through Glenwood canyon.

In years past, the most dangerous portion of the I-70 corridor was generally considered to be Vail Pass, but after several mud slides and a history of bad accidents CDOT officials say Glenwood Canyon isn’t far behind. “Its definitely in comparison with Vail pass,” David says, “It’s constant curves through that canyon and sight distance is much more limited through that Canyon compared to Vail Pass.”

David says high winds and limited visibility through Glenwood Canyon cause most accidents but as winter storms continue, icy roads can also prove deadly.

CDOT is asking all drivers to drive *defensively this winter.