The 13.62 mi (21.92 km) highway straddles the southeastern edge of the Salt Lake Valley before it enters the mouth of Little Cottonwood Canyon.

[4] A short piece of Wasatch Boulevard north of 3300 South remained a state highway, as an extension of SR-171,[5] but the remainder was removed from the system.

[6] In 1969, the route was moved to Wasatch Boulevard north of the Little Cottonwood Canyon turnoff, placing the western terminus at SR-152 near the mouth of Big Cottonwood Canyon and removing those portions of Danish Road, Bengal Boulevard, and Highland Drive from the state system.

The Alta Bypass Road was added to SR-210 in 1975, providing an alternate route when snow slides close the main roadway.

[9] The definition of SR-210 was changed in 1969 to absorb this mountainous route, but in 1994 it was truncated back to Alta, the extension having not been constructed.