LONGMONT, Colo. (CBS4)- All northbound lanes of Interstate 25 were closed for more than an hour on Thursday afternoon due to a crash. The closure was in place between Exit 240 CO 119 and Exit 243 CO 66, both near Longmont. All lanes reopened just after 5 p.m.

Copter4 flew over the crash scene just after 4 p.m. where it appeared that a silver sedan and a red pickup truck were involved in a collision. What happened leading up to the crash is being investigated.

The Colorado Department of Transportation did advise drivers to be aware of long delays and backups in the area at the time of the closure.

There were several emergency vehicles on scene, including more than one ambulance.