Utah State Route 120

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Interstate 70 Business marker State Route 120 marker

State Route 120
I-70 Business Loop, Richfield
Route information
Defined by Utah Code §72-4-117
Length: 3.886 mi[1] (6.254 km)
Existed: 1969 – present
Major junctions
South end: I‑70 / US‑89 in Richfield
North end: I‑70 / US‑89 in Richfield
Counties: Sevier
Highway system
SR-119 SR-121

State Route 120 (SR-120) is a state highway in the US state of Utah forming a business loop around I-70 serving the town of Richfield. The route forms the main street for Richfield and spans 3.89 miles (6.26 km). The highway was established 1969, coinciding with the construction of I-70 through Sevier County.

Route description[edit]

The highway begins at a diamond interchange on I-70/US-89 at exit 37. From there, the route heads east on 1200 South, a two-lane undivided highway, in the southwestern portion of Richfield. The road continues east for ten blocks before turning northeast on Main Street, a four-lane road, and beginning an overlap with SR-118. Past 900 South, the road straightens out to the north and reaches central Richfield. At 300 North, SR-118 branches off to the east and SR-120 continues north on Main Street. The road passes a cemetery and a hospital before turning northeast. The route and Main Street terminate at another diamond interchange with I-70, this time at exit 40.[2]


State Route 120 was established in 1969 as a road looping around I-70 in Richfield. The route was initially composed of three portions: a proposed road from the under-construction interchange at I-70 in southeast Richfield to Main Street, the existent portion of Main Street north to 300 North, and another proposed road connecting this point to the north Richfield interchange. The proposed roads were completed in 1990. No realignments have affected the route since then.[3]

Major intersections[edit]

The entire route is located in Richfield, Sevier County.[4]

Mile[1] Junction Notes
I‑70 – Salina Southern terminus
1.004 1.616 SR‑118 south (Main Street) – Joseph South end of SR-118 overlap
2.598 4.181 SR‑118 north (300 North) – Sigurd North end of SR-118 overlap
I‑70 – Salina Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi