This is the new bypass being built about two miles (3.2k) from my home. The machine is view is a Comaco GP-4000 slipform Paver capable of widths up to 50 feet in cement or asphalt. (15.24m) When it did this stretch of asphalt it must been considerably wider to span the distance so that the tracks were outside the asphalt. It is used in airport runway construction as well as roads. This company builds many different models depending on the construction needs.