US Highway 24
West Endpoint: Colorado State Line at Kanorado
East Endpoint: Missouri State Line in Kansas City
Counties Passed through: Sherman, Thomas, Sheridan, Graham, Rooks, Osborne, Mitchell, Cloud, Clay, Riley, Pottawatomie, Shawnee, Jefferson, Douglas, Levenworth, Wyandotte
History
Initally, US 24 ended at Independence, Missouri. In 1936, US 24 was extended into Kansas, following US 40 to Lawrence, replaced K-10 from Lawrence to Topeka, followed 40 again to Manhattan, and replaced US 40N through the rest of Kansas and on to Limon, Colo. The stretch of US 24 between Topeka and Manhattan was re-designated solely as US 24 by 1957, when the "straight shot" between Topeka ans Junction City was completed. The straight shot would become part of I-70
Several bypasses have been built along US 24. By 1968, 24 was relocated around Perry and by '69, 24 was rerouted in Graham county so that it became closer to the town of Nicodemus.
In 2009, State Avenue east of K-7 was turned back to the Unified Government of Wyandotte County/Kansas City. The interchange with K-7 was re-opened January 22, 2009, and reassurance signs started appearing along I-70 in February.