Planning to attend the U.S. Snowboard Championships at [R113R Copper Mt.] April 5 or 6? Or, getting in some late spring skiing or riding? Well, your best bet is to either get up very early or head for the hills Monday or before.

OnTheSnow Colorado Editor Shannon Luthy is reporting that Colorado Department of Transportation (CDOT) plans to close I-70 to through traffic between U.S. 40/Empire (Exit 232) and Silverthorne (Exit 205) interchanges. The closures allow crews to safely bring down a large unstable cluster of boulders on the slope above the highway. I-70 is expected to remain closed until 5 p.m. Tuesday. It is possible it will need to be closed Wednesday, as well, if work is not completed.

The Championships run from April 2-12. Rooms are reportedly still available by calling Copper Lodging at (866) 837-2996.

Here are some detour options: I-70 to U.S. 40 (Empire Junction), U.S. 40 west over Berthoud Pass to Kremmling and State Highway 9 south to I-70 in Silverthorne (110 miles). Or, take U.S. 285 southwest to Fairplay, State Highway 9 north over Hoosier Pass to I-70 in Frisco (101 miles). Updates are available by calling 511.

Riders will compete both Tuesday and Wednesday at the Championships and all events are on the schedule by groups.