Location: I-25 and Santa Fe Ave, Fountain US-85 will join again here in a second, without an exit tab. Location: I-25 and Santa Fe Ave, Fountain Exit for US-85 North. US-85 South will remain concurrent with I-25 South all the way to Las Cruces, NM where it will join I-10. It won’t become an independent … Continue reading Interstate 25, CO-16 to US-85