to rebuild the interchange at US 60 (James River Freeway). In September 2011, US 65 became a six-lane divided freeway in Springfield between Interstate 44 and US 60. It is the first six-lane highway to appear in Southwest Missouri. North of Springfield, it returns to a four-lane, non-interstate highway. Through the town of Buffalo, the highway becomes two lanes with a center lane for left turns. This part of the highway has also seen upgrades in recent years, such as rumble stripes and extending the middle turn lane to just outside the northern part of the city. From Buffalo to Preston, US 65 is two-lane highway, having an intersection with U.S. Route 54 at Preston (a four-way stop). At Warsaw the highway crosses over the western end of the Lake of the Ozarks and becomes a four lane, non-interstate highway again at the intersection with Missouri Route 7. At Sedalia is an intersection with U.S. Route 50, at Marshall Junction is an interchange with Interstate 70 and U.S. Route 40. In Marshall, the four-lane ends, and US 65 is a two-lane highway all the way to Iowa. At Waverly is the beginning of a concurrency with U.S. Route 24 (which will continue to Carrollton). Also in Waverly, US 65 and US 24 cross the Missouri River via the Waverly Bridge. Further north, the road crosses U.S. Route 36 at Chillicothe and U.S. Route 136 at Princeton. The highway leaves Missouri at South Lineville and enters Iowa. Iowa U.S. 65 enters Iowa at Lineville. North of Liberty Center, it junctions U.S. Route 69. The two highways run together to the junction of Iowa Highway 5 just south of the Des Moines city limits. U.S. 65 forms the eastern side of the beltway around Des Moines. The highway runs concurrently with Interstate 80 for one mile (1.6 km), before exiting as an expressway running from southwest to northeast. This is part of the expressway connecting Des Moines and Marshalltown. At the junction of Iowa Highway 330 northeast of Bondurant, U.S. 65 becomes a two-lane road again. (The expressway continues along Iowa 330.) U.S. 65 junctions U.S. Route 30 at Colo and U.S. Route 20 south of Iowa Falls. It intersects U.S. Route 18 south of Mason City, then goes north through downtown Mason City before leaving the state north of Northwood. Minnesota U.S. 65 enters the state at Gordonsville in Freeborn County.