Between Smith's Ferry Drive - High Valley Road and Round Valley Road (10 to 13 miles south of the Cascade area). The road is closed. From 10:00AM MDT to 2:00PM MDT on Monday, Tuesday, Wednesday and Thursday. Until September 24, 2021 at about 11:59PM MDT.

Web Comment: State Highway 55 will be closed Monday thru Thursday from 10 am to 2 pm for blasting. road construction zone will be controlled by temporary signals. to sign up for up to the date information go to the following website. itdprojects.org/ID55smithsferry