US Route 159 is a short alternate route to US Route 59, zigzagging through rural areas to the west and north of St. Joseph, Missouri.  The overall route is shaped like a backward question mark, minus the dot.  In Nortonville, Kansas, US Route 59 turns from a northerly path to a northeasterly one, so it can more directly serve St. Joseph, Missouri.  At that point, US Route 159 heads north to Hiawatha, Kansas, and Falls City, Nebraska.  At Falls City, Nebraska, in that state's southeastern corner, US Route 159 turns easterly to cross into Missouri.  It ends at another portion of US Route 59 near Interstate 29, north of St. Joseph, near a town called Mound City, Missouri.

My photo from US Route 159 comes from its junction with US Route 36 in Hiawatha, Kansas. This northbound trailblazer shows people leaving the junction that they're proceeding northward on US Route 159. It also shows people that they're also going north on US Route 73, which follows the same road. This photo was taken as I was trying to drive all of US Route 36 in July, 2026.

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