Texas State Highway 66

State Highway 66
Route information
Maintained by TxDOT
Length	34.96 mi[1] (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
Highways in Texas Interstate US State Toll Loops Spurs FM/RM Park Rec
← US 66 → US 67

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.