sentences:  The highway passes over the former stockyards and rail yard when it crosses the Kansas River on the Lewis & Clark Viaduct into downtown Kansas City, Missouri.After crossing the Lewis & Clark Viaduct, I-70 enters Missouri.It encounters a loop of freeways, called the Alphabet Loop, which contains I-70 as well as I-35, I-670, US 24, US 40, US 71, and US 169.