Counties Passed through: Sherman, Thomas, Sheridan, Graham, Rooks, Osborne, Mitchell, Cloud, Clay, Riley, Pottawatomie, Shawnee, Jefferson, Douglas, Levenworth, Wyandotte
Initially, 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 and 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 1999, US 24-40 in Wyandotte County was rebuilt to a five-lane arterial to accompany the new Kansas Speedway and associated development. In 2008, the road was rebuilt from the Speedway west to the K-7 interchange with a wide median. Upon the completion of the project, State Avenue east of K-7 was turned back to the Unified Government of Wyandotte County/Kansas City and US 24/40 relocated along I-70. The interchange with K-7 was re-opened January 22, 2009, and reassurance signs started appearing along I-70 in February.Photos 1 2 3 4 5 6 7 8 9 10 11 12 13 14