The Colorado Department of Transportation wants to know what you think about the I-70 Mountain Express Lane.

It's been a little more than a year since that 13-mile express lane opened on the stretch between Empire and Idaho Springs.

CDOT wants to know if you've used this lane, how often and if you believe it is helping with congestion. It also asks about your use of other express lanes in the state.

The survey takes five minutes or less to complete. You have until April 29 to take it.