Missouri Route 172

Route 172
MO 172 highlighted in red
Route information
Maintained by MoDOT
Length	8.810 mi[1] (14.178 km)
Major junctions
West end	US 67 in Mark Twain National Forest
Major intersections	Route W in Mark Twain National Forest
East end	End of state maintenance in Lake Wappapello State Park
Location
Country	United States
State	Missouri
Counties	Wayne
Highway system
Missouri State Highway System Interstate US State Supplemental
← Route 171 → Route 173

Route 172 is a state highway in the Mark Twain National Forest, specifically in Wayne County, Missouri. The route runs for 8.97 miles (14.44 km) eastward as a two-lane highway through dense forests. Route 172 begins at an intersection with U.S. Route 67 just south of the intersection nearby with Route 49. Route 172 has a mile-long concurrency midway with Supplemental Route W, where the Route 172 returns to its eastern terminus, Lake Wappapello State Park. The route does not pass any communities or municipalities on its stretch.