The Department of Natural Resources and Environmental Control may construct any roads leading to or through any public lands which are under the supervision and control of the Department; may make plans and specifications for the construction of such roads and secure bids for the construction of the same; may enter into contracts for the construction of such roads as are deemed wise; and may pay the costs of the plans, specifications and construction work incident to the building of such roads out of any moneys to the credit of the Department in the State Treasury.