Texas State Highway 342

State Highway 342
SH 342, highlighted in red
Route information
Maintained by TxDOT
Length15.373 mi (24.740 km)
Existed1941–present
Major junctions
South end US 77 in Red Oak
Major intersections I-20 in Dallas
North end Loop 12 in Dallas
Location
CountryUnited States
StateTexas
Highway system
SH 341 SH 343

State Highway 342 (SH 342) is a 15.373-mile (24.740 km) state highway in the U.S. state of Texas. The highway begins at a junction with U.S. Highway 77 (US 77) in Red Oak and heads north through Lancaster to a junction with Loop 12 (Loop 12) in Dallas.