The Transportation Board is granted policy powers and duties in addition to serving in an advisory capacity to the Director.

They are responsible for establishing a complete system of state highway routes and have the final authority on establishing, opening, relocating, altering, vacating, or abandoning any portion of a state route or state highway, including establishment of parkways and historic and scenic roadways.

The Board awards construction contracts and monitors the status of construction projects and has the exclusive authority to issue revenue bonds for financing needed transportation improvements throughout the state.