Oklahoma State Highway 14 route continued north along present-day U.S. 281 through Alva to the state line south of Hardtner, Kansas. (The old road north of Vici became part of SH-34.) New U.S. routes were added to Oklahoma's highway system in 1938. Among these were US-281, formerly a split route with one section in Kansas and one in Texas, which was connected in 1938 via Oklahoma; also added in 1938 was a southern extension of US-183. These two routes were overlaid onto SH-14, with US-183 entering the state from the south near Davidson and following the SH-14 route to Seiling, and US-281 taking the
U.S. Route 59 in Kansas US-59 reaches the south side of Lawrence and crosses K-10, known as the South Lawrence Trafficway, which heads west as a Super-2 toward Clinton Lake, the Kansas Turnpike, and Lecompton; and east as a divided freeway toward Olathe and Lenexa. Prior to November 2016, K-10 was merged with US-59 between the South Lawrence Trafficway and 23rd Street due to lawsuits over the completion of the road. In Lawrence, US-59 runs along Iowa Street, home to many retail shopping centers and fast-food restaurants. North of 23rd Street/Clinton Parkway, US-59 runs along the western edge of the University of Kansas. After crossing