I-25: Berthoud to Fort Collins

The I-25 Berthoud to Fort Collins Express Lanes were constructed as part of the “I-25 North” series of projects. This portion of the project included the construction of 14 miles of northbound and southbound Express Lanes with a HOV 3+ option from CO 56 in Berthoud to just past Prospect Road in Fort Collins.
How to Use The Express Lane
I travel in a:
Vehicles with one to two people pay a toll to use the Express Lanes with an ExpressToll account or through a License Plate Toll.
HOV3+ users must have an ExpressToll account, a Switchable HOV transponder set to “HOV” mode, and three or more people in the vehicle to use the Express Lanes for free.
Motorcyclists can use the Express Lanes for free without a pass.
Bus and other transit can travel in the Express Lanes.
Corridor Basics
- Lanes are open 24/7
- 14 miles of Express Lanes from Berthoud to Fort Collins.
- Motorcyclists can use the Express Lanes for free without a pass. All other vehicles are tolled.
- HOV 3+ and bus services are available with a switchable HOV transponder.
- An adjustable toll pricing system is used – prices depend on the time of day.
- Overhead signs will indicate current toll prices. Tolls are collected through the vehicle’s ExpressToll account or a License Plate Toll.
- Enter and exit the Express Lanes through dashed lines only.
- Safety and Toll Enforcement Program: A 30-day warning period is in effect. Sophisticated roadside technology is used to enforce the following rule.
- No weaving across double solid white lines.
- Enter and exit through the dashed lines only.




