Texas State Route 342 is a north-south highway in South-Central Dallas County. This highway runs from near Glendale Park in Dallas to the Ellis/Dallas County Line. TX St Rt 342 passes through the following towns in Dallas County. Dallas Lancaster TX St Rt 342 is not multi-plexed in Dallas County. TX St Rt 342 intersects the following highways in Dallas County. Texas State Loop 12, at Dallas. Interstate 20, at Dallas.
