By Jennifer McRae

CASTLE ROCK, Colo. (CBS4)– Northbound lanes of I-25 were closed at the Castle Rock Parkway due to multiple crashes on Tuesday afternoon. Traffic was diverted onto Highway 85 before northbound lanes reopened just before 3 p.m.

(credit: CDOT)

Drivers were urged to take alternate routes due to heavy traffic in the area and lengthy delays. There is no estimate on when I-25 will reopen.

What caused the crashes is being investigated, however there is a Winter Weather Advisory through 5 p.m. Tuesday for the Denver and Boulder areas. CBS4 declared Tuesday a First Alert Weather Day for Denver and Colorado’s entire Front Range.

Jennifer McRae