State Route 2B was one of Nevada’s original state highways, first appearing on official state highway maps around 1929. The western terminus was at its junction with SR 2A (present-day by US 50) about 6 miles (9.7 km) east of Dayton. It ran east along present-day Fort Churchill Road and then turned south along present-day Alternate US 95 to Yerington. The section of SR 2B south of Fort Churchill Road was replaced by Alternate US 95 in 1941.