As of April 7, 2026, a familiar stretch of I-25 in Northern Colorado is operating a little differently. The new I-25 Express Lane Tolls between Berthoud and Fort Collins are now tolled, introducing dynamic pricing designed to keep traffic moving, especially during peak travel times. Spanning approximately 14 miles, this section of I-25 is part of a broader effort to reduce congestion and improve travel reliability along the corridor. How the I-25 Express Lane Tolls Work The system uses adjustable toll pricing, meaning: Prices change based on real-time traffic conditions Tolls are typically higher during peak travel times Rates decrease when traffic is lighter Overhead signs display current toll rates before you enter, helping drivers decide whether to use the lane. The goal is to maintain a steady flow of traffic in the express lanes, even when the general lanes slow down. How to Use the Express Lanes There are a…