Location: I-25 and Colfax Ave, Denver Without any advance signage, exit for Colfax Ave, which is I-70 Business (unsigned here to reduce confusion), US-40, and US-287 Location: I-25 and Colfax Ave, Denver After passing Colfax we quickly come up on the junction for US-6. 6 will split from 25/87/85 and head west as a freeway … Continue reading U.S. Route 85, US-6 to I-70 Bus/US-40/US-287