Business Loop I-25 - Castle Rock

Part of old U.S. 85-87, this loop used to follow Plum Creek Parkway east from Exit 181 to Wilcox Street, and Wilcox Street north to Exit 182. The 1.2 mile long route was decommissioned by 1996 and likely was never signed.

Subsequent actions realigned SH 86 away from 5th Street to no longer end at former Business Loop I-25 in Downtown Castle Rock. SH 86 was realigned onto Founders Parkway north to Exit 184 so that it no longer ended at a locally maintained route.