U.S. Route 77 Business (US 77 Business or US 77-L) is a business loop of US 77 in Waco. The highway is the old alignment of US 77 through the city and was formerly signed as a US 77 & US 81 Business Route, but designated as Loop 491 on October 2, 1970 until it was changed to the current Business US 77 designation on June 21, 1990. The section of highway from Loop 484 to US 84 is a freeway, making it the only business route in Texas that is a freeway.