Missouri Route 123
|Length:||45.889 mi (73.851 km)|
|South end:||US 160 in Willard|
|North end:||US 54 in Weaubleau|
The current highway begins in Weableau. South of Humansville, it crosses Route 13 and at Fair Play it intersects Route 32. At Aldrich, the road crosses Stockton Lake, then forms a concurrency with Route 215 to Eudora. At the north edge of Willard, the road ends at US 160.
Originally, the highway continued all the way to Springfield, passing through town on various streets (one of which was West Bypass) and leaving town on Campbell Avenue. The path south of Springfield is modern US 160 and headed through Nixa, Highlandville, and Spokane. At Spokane, old Route 123 followed modern Route 176 (US 160 also followed this route until the newer highway was built) to Walnut Shade where the highway ended.
The original termini of the highway were at Route 64 in Fair Play and Route 76 in Walnut Shade, Missouri. The road, however, would be extended further north and shortened to the south. From Willard, the highway continued on through Springfield, Nixa, Highlandville, and to Walnut Shade.
The southern end of the highway was truncated when U.S. Route 160 was extended from its former terminus in Springfield, and the road's terminus was moved back to Springfield (at US 160), and later still (in the 1980s) back to Willard when US 160 was rerouted.
|Walnut Grove||8.484||13.654||Route V / Route BB|
|Polk||Eudora||13.485||21.702||Route 215 east / Route W||South end of Route 215 overlap|
|||17.858||28.740||Route 215 west||North end of Route 215 overlap|
|Fair Play||25.653||41.285||Route 32 east||South end of Route 32 overlap|
|26.066||41.949||Route 32 west||North end of Route 32 overlap|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi