Missouri Route 84

Route 84
Route 84 highlighted in red, Route 84 Spur in blue
Route information
Maintained by MoDOT
Length	30.215 mi[1] (48.626 km)
Existed	1921–present
Major junctions
West end	AR 90 at Arkansas state line
Major intersections	US 412 in Kennett US 412 near Hayti Heights I-55 / US 61 in Hayti
East end	I-155 / US 412 / Route Y in Caruthersville
Location
Country	United States
State	Missouri
Counties	Dunklin, Pemiscot
Highway system
Missouri State Highway System Interstate US State Supplemental
← Route 83 → Route 85

Route 84 is a state highway in the Missouri bootheel. The route starts at Arkansas Highway 90 (AR 90) over the St. Francis River on the Arkansas–Missouri state line. The road travels eastward to Kennett, where it becomes concurrent with U.S. Route 412 (US 412). East of Kennett, the concurrent routes travel eastward on a divided highway to Hayti Heights, where the concurrency ends. Route 84 travels through Hayti Heights and Hayti, and it crosses Interstate 55 (I-55) and US 61. The route then travels southeastwards to Caruthersville, and bypasses the central area of the city. In the southern part of Caruthersville, Route 84 ends at an interchange with I-155 and US 412.

The route was designated in 1921, from the Arkansas state line to Caruthersville, as part of the new state highway system. The route was opened by 1926, and it became one of the most used routes in southeast Missouri within one year. Route 84 was fully paved by 1932. In 1957, a new bypass was opened in Caruthersville, and the route was rerouted onto it. Two interchanges were built at interstate highways; the one at I-55 opened by 1971, and I-155 by 1977.