I'll agree with that if you raise the sales tax in Summit County and Vail-Aspen by at least 2 cents.  Those who are just trying to get through on an Interstate highway should not pay for locals taking over those highways for commuter reasons.  I use I-70 to get to Dillon, and I will gladly pay the sales tax while I am there, but it is an INTERSTATE (highway linking different States, not local communities), so increased gas taxes should have no place in this specialized building project.
I would humbly suggest that there should be at least 4 lanes in each direction from Denver to Idaho Springs, and three lanes from there to George Town.  Look at the adjacent land available, and you will see that the only pinch is Idaho Springs.  Don't stop because of that...Build the damn highway that you are supposed to have in place.  The major pinch now westbound is the 3 lane to 2 lane bind going down into Idaho Springs, and there is enough land available to widen it, just no desire to do it.