Texas Farm-to-Market 1171 is a east-west highway in Southern Denton County. TX FM 1171 passes through the following town in Denton County. Lewisville TX FM 1171 is not multi-plexed in Denton County. TX FM 1171 intersects the following highways in Denton County. Interstate 35W, near Justin. U.S. Rt. 377, near Roanoke. Texas Farm-to-Market 2499, near Flower Mound. Interstate 35E, at Lewisville. U.S. Rt. 77, at Lewisville. Texas Farm-to-Market 3504, at Lewisville. Texas State Route 121, at Lewisville.
