in 1870. The concurrency of US 54 and US 400 continues through Augusta in Butler County before US 400 heads east toward the Missouri state line, while US 54 forms a brief concurrency with US 77 through El Dorado. At El Dorado, US 54 continues its easterly course through rural areas in Greenwood and Woodson counties before passing through the cities of Iola and Fort Scott; US 77 heads north to Junction City. US 54 exits Kansas in Bourbon County before reaching Nevada, Missouri. Missouri In Missouri, US 54 runs from the southwest portion of the state to the northeast. It is a major conduit through the Ozarks and is the primary access road to Pomme de Terre Lake and Lake of the Ozarks. After entering the state it passes through Nevada, El Dorado Springs, Hermitage, crossing Lake of the Ozarks the first time just north of Ha Ha Tonka State Park. It passes through Camdenton and crosses the lake a second time on the Grand Glaize Bridge at Osage Beach before bypassing Eldon and going through Jefferson City, where it crosses the Missouri River via the Jefferson City Bridge and briefly overlaps U.S. Route 63. Just north of the bridge, it splits passing through Fulton, crossing Interstate 70 at Kingdom City, bypassing Mexico, sharing a concurrency with Highway 19 through Laddonia, passing just north of Vandalia, and ultimately crossing the Mississippi River via the Champ Clark Bridge into Illinois at Louisiana. Illinois In the state of Illinois, U.S. 54 runs from the Champ Clark Bridge over the Mississippi River to its terminus at Interstate 72 northeast near Griggsville. Before the eastern terminus was cut back to I-72, U.S. 54 continued northeast via several existing roads, including the current Illinois Route 54, Illinois Route 50, and Governors' Highway, into downtown Chicago, where it ended at Michigan Avenue and Lake Shore Drive. It is a rural, two-lane surface street for its entire length in Illinois. In the state of Illinois, U.S. 54 is long. History Illinois Initially, US 54 ended at the junction of present-day IL 106 (former portion of US 36). In 1935, it replaced a portion of IL 107 between Louisiana, Missouri and New Hartford, Illinois. From 1942 to 1971, US 54 reached downtown Chicago. It then got truncated back to its previous northern terminus. This was in favor of portions of US 36, Illinois Route 54, US 45,