Lakewood's mayor had hoped for something different, but a nonprofit is now pulling together a financial plan to take on the $120 million project.
CDOT has promised about $4.5 million to upgrade a total of nine intersections around Denver.
Backers of I-300 sent a letter Thursday calling some of the agency's draft rules "unnecessary and overly burdensome" for businesses.
Republicans Sen. Cory Gardner and Rep. Scott Tipton said having the agency be headquartered out West would improve decision-making.
Denver councilwoman Kendra Black and others on the city's Social Consumption Advisory Committee said last month that regulators should consider requiring training for the staff of permitted social cannabis businesses.
"There need to be more guidelines put in place before dumping that undue burden" on neighborhood groups, said one advisory committee member.
Bad news for Denverites eager to legally smoke a joint in a bar: State licensing officials have squashed that dream.
Most of these intersections have four-lane streets, which are more dangerous for pedestrians and cyclists.