Texas State Highway 66
| Route information | ||||
|---|---|---|---|---|
| Maintained by TxDOT | ||||
| Length | 34.96 mi (56.26 km) | |||
| Existed | by 1933–present | |||
| Major junctions | ||||
| West end | SH 78 at Garland | |||
| East end | US 69 / US 380 at Greenville | |||
| Location | ||||
| Country | United States | |||
| State | Texas | |||
| Counties | Dallas, Rockwall, Collin, Hunt | |||
| Highway system | ||||
| ||||
State Highway 66 (SH 66) is a state highway in the U.S. state of Texas, connecting Garland to Greenville. The route runs roughly parallel to Interstate 30, passing through Rowlett, Rockwall, Fate, Royse City, and Caddo Mills. It also crosses Lake Ray Hubbard twice. It is known locally as Lakeview Parkway in Rowlett and as Avenue B in Garland.