No county, city or highway district shall bid on any state highway system construction project which is let by competitive bid by the Idaho transportation board; provided, however, the provisions of this section shall not prohibit the Idaho transportation board, a county, a city or a highway district from entering into agreements with one another for joint or cooperative action pursuant to the provisions of chapter 3, title 40 , or chapter 23, title 67 , Idaho Code.

[40-903, added 1987, ch. 303, sec. 2, p. 644.]