[a] From its eastern terminus, the route briefly runs concurrently with northbound US-89 as they swing to the west onto the alignment of 2100 North.

Just before crossing over the Jordan River the route leaves Lehi and enters unincorporated Utah County.

[2] In the future, an extension from this intersection will be constructed farther west as part of SR-85 (Mountain View Highway) and will loop to the southwest and end at SR-73 in Saratoga Springs.

[3] As part of the Mountain View Corridor project, construction began in 2010 on the western end of 2100 North in Lehi.

[8] This situation lasted until 2017, when construction was started on the section of the Mountain View Corridor connecting SR-73 with SR-68 at 2100 North.