List of Interstate Highways in Missouri

Interstate Highways of the Missouri Highway System
Highway markers Interstate 44 and Interstate 435
System information
Maintained by MoDOT
Formed:	June 29, 1956 (1956-06-29)^[1]
Highway names
Interstates:	Interstate nn (I‑nn)
System links
Missouri State Highway System Interstate US State Supplemental

The Interstate Highways in Missouri are the segments of the national Dwight D. Eisenhower System of Interstate and Defense Highways^[2] that are owned and maintained by the U.S. state of Missouri.

Primary Interstates

Number	Length (mi)^[3]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
I0029 !I-29	128.584	206.936	Downtown freeway loop in Kansas City, Missouri	I‑29 at Iowa state line south of Hamburg, IA	1963	current
I0035 !I-35	114.448	184.186	I‑35 at Kansas City	I‑35 north of Eagleville	—	—
I0044 !I-44	293.184	471.834	I‑44 west of Joplin	I‑70 in St. Louis	1956	current
I0049 !I-49	178.717	287.617	US 71 in Pineville	I‑470 in Kansas City	2012^[4]	current	Will be extended to Arkansas
I0055 !I-55	209.688	337.460	I‑55 south of Steele	I‑55/I‑64 at St. Louis	1956	current
I0057 !I-57	22.056	35.496	I‑55 at Sikeston	I‑57 north of Charleston	—	—
I0064 !I-64	40.816	65.687	I‑70 at Wentzville	I‑64 at St. Louis	1956	current
I0066 !I-66	340	547	Kansas state line west of Joplin	Kentucky state line south of Cairo, IL	proposed	—	Proposed as part of the East–West TransAmerica Corridor in 1991
I0070 !I-70	249.747	401.929	I‑70 at Kansas City	I‑70 at St. Louis	1956	current
I0072 !I-72	2.056	3.309	US 36/US 61 in Hannibal	I‑72 at Hannibal	—	—	A 157-mile (253 km) extension has been proposed to Cameron
Future

Number	Length (mi)^[3]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
I0155 !I-155	10.834	17.436	I‑55/US 61 east of Hayti	I‑155 east of Caruthersville	—	—
I0170 !I-170	11.255	18.113	I‑64/US 40 in Richmond Heights	I‑270 in Hazelwood	—	—
I0229 !I-229	15.022	24.176	I‑29/US 71 in St. Joseph	I‑29/US 59/US 71 north of St. Joseph	1986	current
I0244 !I-244	21.047	33.872	I‑55 south of Green Park	I‑70 in Bridgeton	—	—	Previous designation for part of I-270
I0255 !I-255	3.979	6.404	I‑55 south of Green Park	I‑255/US 50 at Illinois state line south of St. Louis	—	—	Missouri section of the eastern half of beltway around St. Louis
I0270 !I-270	35.497	57.127	I‑55 south of Green Park	I‑270 at Illinois state line at St. Louis	—	—	Western half of beltway around St. Louis
I0435 !I-435	55.184	88.810	I‑435 at Kansas City	I‑435 Kansas state line at Parkville	—	—	Missouri section of the beltway around Kansas City
I0470 !I-470	17.081	27.489	I‑435/US 50/US 71 in Kansas City	I‑70 in Independence	1970^[5]	current	Old US 250
I0635 !I-635	3.766	6.061	I‑635 at Kansas City	I‑29/US 71 in Kansas City	—	—
I0670 !I-670	2.323	3.739	I‑670 at Kansas City	I‑70/US 40 in Kansas City	—	—
Former

↑ McNichol, Dan (2006). The Roads that Built America. New York: Sterling. p. 106. ISBN 1-4027-3468-9. .
↑ Swift, Earl (2011). The Big Roads: The Untold Story of the Engineers, Visionaries, and Trailblazers Who Created the American Superhighways. Boston: Mariner. p. 5. ISBN 978-0-547-90724-6. .
1 2 Missouri Department of Transportation (August 30, 2015). Flex Map Viewer (Map). Missouri Department of Transportation. Retrieved August 30, 2015.
↑ "US 71 from Kansas City to Joplin to Become Interstate 49". The Kansas City Star. September 2, 2012.
↑ Missouri State Highway Commission (1970). Missouri Official Highway Map (PDF) (Map). Scale not given. Jefferson City: Missouri State Highway Commission. Kansas City inset. Retrieved February 19, 2011.

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