Despite the opening of the Regional Transportation District A Line connecting Denver International Airport and downtown Denver, car rental revenues rose last year at DIA.

The airport reported that car rental revenues rose by more than $23 million, to $554 million from $531.7 million in 2015, an increase of 4.5 percent.

The increase comes in the aftermath of the April opening of RTD’s A Line, which runs 23 miles and takes 37 minutes to travel from the airport to downtown.

Avis had the biggest increase…