Interstate 470 (Missouri)

Interstate 470
I-470 highlighted in red
Route information
Auxiliary route of I-70
Maintained by MoDOT
Length	17.081 mi[1] (27.489 km)
Existed	1970 (1970)[2]–present
History	Completed by 1983[3]
NHS	Entire route
Major junctions
West end	I-49 / I-435 / US 50 / US 71 in Kansas City
Major intersections	US 50 / Route 350 in Lee's Summit Route 291 in Lee's Summit US 40 in Independence
North end	I-70 / Route 291 in Independence
Location
Country	United States
State	Missouri
Counties	Jackson
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future Missouri State Highway System Interstate US State Supplemental
← Route 465 → Route 571

Interstate 470 (I-470) is a 16.72-mile (26.91 km) loop of the Interstate Highway System that serves to link southeast Kansas City to Independence via Lee's Summit in Jackson County, Missouri. The western terminus of the freeway is at the Grandview Triangle interchange with I-49, I-435, U.S. Route 50 (US 50), and US 71 while the northern terminus is a cloverleaf interchange with I-70. The freeway travels west to east through southern Kansas City, curving toward the north at the Lee's Summit Municipal Airport and becoming concurrent with Route 291 as the highway travels north toward Independence.

An intermediate interchange with US 50 provides access to southern Jackson County and to Raytown to the north via Route 350, a former alignment of US 50 before the construction of I-470. Plans for a southern freeway were first published in 1955, and the first portions of I-470 were completed in 1970. By 1983, the entire freeway was open to traffic. Since construction, two new interchanges have been constructed, along with the expansion of the US 50 cloverleaf. In 2010, part of the freeway was closed by the Grandview Triangle due to a landslide underneath the freeway. Between 38,000 and 75,000 vehicles use the freeway on an average day.