UAB Siauliu plentas constructs and repairs roads. It lays asphalt concrete pavements and applies slurry seal coating, carries out surface treatment works and earthworks. The company works on main, national, and regional roads, as well as local roads, city roads and crossroads, airport runways, and railways, engages in asphalt concrete and slurry seal, bitumen, bitumen emulsions, concrete, stabilized base, and soil and mineral substance testing, as well as consistence of slurry seal, and specializes in road design and preparation of estimates.