State Route 81
Route information
Maintained by UDOT
Length	2.475 mi[1] (3.983 km)
Existed	1935–present
Major junctions
South end	SR-30 in Box Elder County
North end	Main Street in Fielding
Location
Country	United States
State	Utah
Highway system
Utah State Highway System Interstate US State Minor Scenic
← I-80 → SR-82

State Route 81 is a state highway in the U.S. state of Utah. It is a short connector road, only 2.475 miles (3.983 km) long, that connects SR-30 with the town of Fielding in Box Elder County.

The route starts at its intersection with SR-30 south of Fielding in Box Elder County, Utah. It starts out travelling west, then meanders northwest for approximately 1 mile (1.6 km) before turning north as 4000 West and continuing until its terminus at Main Street in the center of Fielding.^[1][2]

The route was established in 1935 by the Utah state legislature from US-91/SR-1 east to Fielding and south to SR-154. In 1969, the section from US-91 east to Fielding was cancelled, and SR-82 replaced the section of SR-154 at the south end. There have been no changes since.

The entire route is in Box Elder County.

Location	mi[1]	km	Destinations	Notes
​	0.000	0.000	SR-30	Southern terminus
Fielding	2.475	3.983	Main Street	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi