(1) “Commission” means the prevailing wage commission;
(2) “Highway contractor” means any contractor, subcontractor, person, firm, or corporation engaged in a state construction project for the purpose of building, rebuilding, locating, relocating, or repairing any public highway;
(3) “Prevailing wage” means the rate of pay as determined according to this part;
(4) “Public highway” means any street, road, highway, expressway, bridge, or viaduct, including an adjacent right-of-way, that is constructed or maintained by the state, or any municipality or political subdivision of the state, and that is funded in whole or in part with federal or state highway funds;
(5) “State contract” means any contractual agreement, written or oral, entered into by any person, firm or corporation with this state for the performance of work on a state highway construction project; and
(6) “State highway construction project” means any construction project for the purpose of building, rebuilding, locating, relocating, or repairing any public highway.