Illinois Route 31

IL 31 follows the Fox River along the western bank. It parallels IL 25, which travels along the eastern bank of the Fox River. It travels concurrent with IL 120 in McHenry. IL 31 is called Richmond Road north of IL 120 and Front Street south of IL 120 in McHenry, Main Street in Algonquin, Western Avenue in Carpentersville, Eighth Street in West Dundee, State Street in Elgin, La Fox Street in South Elgin, Second Street in St. Charles, First Street in Geneva, Batavia Avenue in Batavia, Lincolnway Street in North Aurora, Lake Street (Southbound) and River Street (Northbound) in Aurora, and Lake Street in Montgomery. It is also, along with IL 25, signed as part of the Fox River Valley area. IL 31 between Aurora and Geneva was considered part of the Lincoln Highway transcontinental route. The Western Algonquin Bypass was completed in 2014 and redirects traffic around downtown Algonquin. ==History==

SBI Route 31 traveled from Quincy to Canton along various routes. This was dropped in 1935 and was replaced with US 24. In 1937, it was reapplied along other routes on its modern routing. There have been no changes to the routing since. It traveled concurrently with US 30 from Aurora to Geneva at present-day IL 38. In 1934, US 430 was removed north of West Dundee after US 14 was formed. ==Future==

McHenry The intersection of IL 31 and IL 120 is now the most congested intersection in McHenry County. IDOT is currently in Phase 1 of a planned widening of IL 31 from IL 176 in Crystal Lake to IL 120 in McHenry. A bypass of McHenry continues to appear in documents planning for a Metra station at Prairie Grove, that include an interchange with the existing IL 31 alignment and the proposed west McHenry bypass alignment to the north of Gracy Road. The west McHenry bypass was originally planned to travel over undeveloped farm lands from north of IL 31 and Gracy Road to IL 120 and Ringwood Road. The corridor was planned to be protected from development in the mid-1990s, but because of a lack of funding, the corridor was never protected from development and has since been developed. ==Major intersections==

{{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint {{ILint ==See also==