 A highway expansion and transit project for the southern I @-@ 25 corridor , dubbed T @-@ REX ( Transportation Expansion Project ) , was completed on November 17 , 2006 . The project installed wider and additional highway lanes , and improved highway access and drainage . The project also includes a light rail line that traverses from downtown to the south end of the metro area at Lincoln Avenue . The project spanned almost 19 miles ( 31 km ) along the highway with an additional line traveling parallel to part of I @-@ 225 , stopping just short of Parker Road . 
