US-169 enters the state at Coffeyville as a four-lane road and is a four-lane highway for about 8.8 miles (14.2 km) until the edge of the Coffeyville Industrial Park. A segment between Chanute and Iola is a freeway with fully controlled access with center concrete barrier, with two lanes in each direction. US-169 runs concurrently with US-59 and K-31 starting about five miles (8.0 km) south of Garnett and diverges northeast again immediately south of Garnett. At Osawatomie the road becomes a full freeway and runs concurrently with K-7. In southern Johnson County US-169 becomes an expressway until its junction with Interstate 35 (I-35) in Olathe.
From this point to the Missouri state line, US-169 alternates between freeways and surface streets. It follows I-35 to Shawnee Mission Parkway in Overland Park, then travels east to Rainbow Boulevard. US-169 then follows surface streets to its junction with I-70 near downtown Kansas City. US-169 and I-70 enter Missouri together just after crossing the Kansas River.
In a June 30, 1980 resolution, US-169 and K-57 were realigned to run directly north–south through Iola. Also at this time, K-269 was first designated a state highway and ran from K-57 and US-169 north to US-54.[2] In a September 20, 1991, resolution, it was proposed to realign K-57 and US-169 over K-269.[4] The project was completed on October 31, 1999, and at that time, K-269 was decommissioned and became part of the new K-57 and US-169.[3]
The intersection immediately south of Garnett used to be a braided intersection with stop and yield signs; it was identified as a high crash location in 2001, and was rebuilt as a roundabout that opened in April 2006.[5] The Kansas Department of Transportation is rebuilding or planning to rebuild several other rural intersections as roundabouts for increased safety.[citation needed]
U.S. 169 has one special route while in Kansas, Business Route 169. The business route northern terminus is the junction of U.S. 169 & 6th Avenue in Garnett. The main highway bypasses the town to the Southeast. The business route travels along 6th Avenue until reaching Maple Street where it intersects with U.S. 59 and K-31 until it ends at its intersection with U.S. 169 at a roundabout South of Garnett in Anderson County, Kansas.
^ abKansas Department of Transportation (2005). "Kansas Highway Changes 1999"(PDF). Topeka: Kansas Department of Transportation. Retrieved April 29, 2020.