Missouri Route 79

Route 79 is a highway in eastern Missouri. Its northern terminus is at Interstate 72/U.S. Route 36 in downtown Hannibal; its southern terminus is at Interstate 70 in O'Fallon. The route closely parallels the Mississippi River.

Route 79
Route information
Maintained by MoDOT
Length	86 mi (138 km)
Tourist routes	Little Dixie Highway of the Great River Road
Major junctions
South end	I-70 in O'Fallon
Major intersections	US 54 in Louisiana
North end	I-72 / US 36 / Route 110 (CKC) in Hannibal
Location
Country	United States
State	Missouri
Highway system
Missouri State Highway System Interstate US State Supplemental
← Route 78 → Route 80

History

When Route 79 was created in about 1930, it replaced the north–south section of Route 56, which had been created in 1922 between Troy and O'Fallon. The part of Route 56 west of Winfield became an extension of Route 47.

Route 79 had major closures as a result of the Mississippi River floods of 2019 and other recent floods. Its buckling pavement in summer 2019 was attributed to hotter and more erratic climate conditions.^[1]

Along the route in downtown Hannibal

Major intersections

All exits are unnumbered.

County	Location	mi[2]	km	Destinations	Notes
St. Charles	O'Fallon–St. Peters line	0.000	0.000	I-70 / Great River Road – St. Louis, Columbia	Southern end of Great River Road overlap
		0.408	0.657	Outer Road north	Interchange
		1.125	1.811	Pearl Drive, Salt River Road	Interchange
Lincoln	Old Monroe	11.393	18.335	Route C – Old Monroe, Moscow Mills	Interchange
	Winfield	15.492	24.932	Route 47 south – Troy
Pike	Louisiana	54.567	87.817	US 54 east – Pittsfield	Eastern end of US 54 overlap
		54.817	88.219	US 54 west – Bowling Green	Western end of US 54 overlap
Ralls	No major junctions
Marion	Hannibal	87.952	141.545	I-72 / US 36 / Route 110 (CKC) / Great River Road – Monroe City, Springfield IL	Northern end of Great River Road overlap
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus