(1) The expenditure of funds now or hereafter available for the construction and reconstruction of primary and secondary roads by the Mississippi Transportation Commission, after having determined the priority in accordance with the requirements of Section 65-1-141 hereof, shall be as follows:

(a) Four-lane roads shall be constructed using the existing two-lane roads as part of such construction along portions of highways where the most recent average daily traffic count exceeds thirty percent (30%) of the route segment’s capacity.

(b) Along such portions of highways where the most recent average daily traffic count does not exceed thirty percent (30%) of the capacity, two-lane roads shall be constructed, or existing two (2) lanes shall be widened, overlayed and reconstructed. Along such two-lane portions of highways passing lanes may be constructed where traffic congestion or special hazards dictate, or, where such two-lane segment connects two (2) existing four-lane roads, such segment may be constructed as a four-lane road for road continuity, using the existing two-lane road as part of such construction.

(c) Four-lane, full-control or limited access highways bypassing municipalities shall not be constructed until the Transportation Commission determines that the most recent average daily traffic count exceeds sixty percent (60%) of an existing two-lane route’s capacity or determines that within a reasonable period of time after construction of such a four-lane, full-control or limited access municipal bypass the average daily traffic count will exceed sixty percent (60%) of an existing two-lane route’s capacity. In no event shall such a bypass be constructed until approved by the Legislature by an appropriation of highway funds for a specific bypass, the construction of which has been recommended by the Executive Director of the Transportation Department pursuant to an order of the Transportation Commission duly recorded in the minutes of the commission and included in the three-year plan prepared pursuant to Section 65-1-141.

(d) Four-lane facilities may be constructed without using existing roadways as a part of such construction where it is necessary to construct four-lanes on new location because of bad alignment of existing roadway or where it is necessary to relocate or realign such roadway so as to connect with a four-lane facility in an adjoining state.

(e) Any four-lane bypass project of which all, or any portion thereof, is presently under construction, or let to contract, or which has been partially completed, except where right-of-way only has been acquired, may be completed in its entirety.

(f) Notwithstanding any limitation imposed above on the construction of four-lane roads, through June 30, 2007, contracts to construct four-lane roads may be let when (i) the federal government has provided money for four-laning a specific highway project, (ii) four-laning will enhance the current economic development of the area in which the four-lane road will be constructed, or (iii) the four-lane road to be constructed will connect with an existing four-lane road.

(2) No state monies shall be expended on any construction project unless a Transportation Department engineer shall be assigned to such project.