According to 9News:
The westbound Interstate 70 Mountain Express Lane west of Denver began charging tolls Thursday.
The new express lane runs parallel to the eastbound Mountain Express Lane for approximately 12 miles from Idaho Springs to Empire.
Construction on the project began in 2019, converting the shoulders of westbound I-70 into toll lanes with the goal of easing traffic congestion, according to the Colorado Department of Transportation (CDOT).
Similar to the eastbound I-70 Mountain Express Lane, the westbound lane is open during peak travel periods only, such as on weekends and holidays. Electronic signs will alert drivers when the lane is open.
Toll prices will be $9 on Fridays, Saturdays and holidays and $8 on Sundays with an ExpressToll pass, CDOT said.
The lane will be tolled for everyone, including motorcycles and carpools. There is not a free HOV, carpool or motorcycle option.
Drivers can sign up for ExpressToll stickers or Switchable HOV Transponders to save money when using the westbound I-70 Mountain Express Lane.
More info HERE!