About 50%of that road, which runs through the mountains south of Boulder, was severely damaged by September’s floods.
Spokesperson Amy Ford with the Colorado Department of Transportation says 72 could have opened earlier with temporary repairs.
But C-DOT decided to do some of the permanent repairs now rather than later.
“The amount of repair that we did, with roadway repair, working on culverts and some of the improvements we could make in guardrails and the like, were really something that will have a more permanent life to them," Ford said.
Since the floods, C-DOT has been able to open 3 major roads, State Highways 119 and 72 as well as US 36.
Ford says the department is on track to reopen US 7 and SH 34 by the Governor’s deadline of December 1st.