Express Lanes

Improving roadways is critical to meeting the transportation needs of Colorado, one of the top five fastest-growing states in the country.

Using Express Lanes is easy and provides travelers more reliable, predictable travel times. Travelers are never forced to pay a toll.

To use any Colorado Express Lanes, you will need an ExpressToll account and pass to avoid a higher toll. The Switchable HOV Transponder is the only pass that allows you to choose the carpool option.


US 36 from Denver to Boulder

Central 70 from I-25 to Chambers Road

Central I-25 from Downtown Denver to US 36

North I-25 from 120th Avenue to E-470

I-25 South Gap: Monument to Castle Rock

C-470 from I-25 to Wadsworth Boulevard

I-70 from Idaho Springs to Empire

I-25 North from US 36 to 120th Avenue

I-25 North from Johnstown to Fort Collins

Express Lanes Master Plan


"It is so exciting to see the major components of this project on my daily commute... ."
— Debra Baskett

Read Debra's story.

"Although I was initially skeptical about the benefits of the US 36 Express Lanes project, I have been amazed at how this project has transformed our region."
— Frank Bruno

Read Frank's story.

"Now that I can use the whole stretch of the Express Lanes, I save over 40 minutes per day! I love the Express Lanes!"
— Meg Collins

Read Meg's story.


Do you have questions about your ExpressToll account?

Please call ExpressToll Customer Service at 303-537-3470, or 1-888-946-3470.

For information about Plenary Roads Denver, please visit

Subscribe to never miss an Express Lanes update.


The stats are in: Express Lanes are moving people faster in peak travel times. See the numbers.

Colorado: The Official State Web Portal