Tennessee State Route 474
| Merchants Greene Boulevard | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length | 1.4 mi (2.3 km) | |||
| Existed | 2000s–2020 | |||
| Major junctions | ||||
| South end | SR 160 southwest of Morristown | |||
| North end | US 11E in Morristown | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Hamblen | |||
| Highway system | ||||
| ||||
State Route 474 (SR 474, known as Merchants Greene Boulevard) was a 1.4-mile-long (2.3 km) five-lane state highway in Hamblen County in the eastern portion of the U.S. state of Tennessee. It served as a connector route from SR 160 to US 11E/SR 34. It was decommissioned and designated as part of SR 66 following an extension project by TDOT in November 2020.