Utah State Route 100

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State Route 100 marker

State Route 100
Route information
Defined by Utah Code §72-4-115
Maintained by UDOT
Length16.934 mi[2] (27.253 km)
Major junctions
South end SR-99 in Fillmore
North end US-50 near Holden
Highway system
  • State highways in Utah

Utah State Route 100 (SR-100) is a state highway in the U.S. state of Utah. Located entirely in Millard County, it connects the city of Fillmore with Flowell and the ghost town of McCornick over a distance of 16.9 miles (27.2 km).

Route description[edit]

The route begins as 400 North at SR-99 (Main Street) in Fillmore. From here, it travels west out of town, crosses over I-15. After 4.6 miles (7.4 km), the route turns north and continues through rural Millard County for about 12.3 miles (19.8 km) until it ends at US-50.[2][3]


SR-100 was originally established in 1935 as connecting Fillmore at SR-1 (Main Street) and Flowell. The construction of I-15 through the area resulted in the old alignment of the route along 100 North to be severed in two by the interstate, so in 1965, the route was moved north three blocks to its current alignment along 400 North because of the proposed underpass on that street.[1]

In 1969, the 12.6 miles (20.3 km) from near Flowell northward to US-50 was transferred to the route, resulting in its current length and alignment.[1]

Major intersections[edit]

The entire route is in Millard County.

Fillmore0.0000.000 SR-99 (Main Street)Southern terminus
Bridge over I-15
16.93427.253 US-50Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b c "State Route 100 Resolutions". Utah Department of Transportation. November 2008. Retrieved 2009-10-05.
  2. ^ a b c "State Route 100 Highway reference". Utah Department of Transportation. Retrieved 2009-10-05.
  3. ^ Google (2009-10-05). "Utah State Route 100" (Map). Google Maps. Google. Retrieved 2009-10-05.