During the first full operational week of the northbound MoPac Express Lane, the most expensive transaction was $8.38 for the entire trip from downtown Austin to Parmer Lane. That peak cost happened on Thursday, Oct. 12. A spokesperson for the Central Texas Regional Mobility Authority says while that number may seem high, only a handful of people paid that price for a 3-minute window between 5:30 p.m. and 6 p.m. that day.
