24-02-22. Separate proposals on each type of work

24-02-22. Separate proposals on each type of work Whenever any highway improvement involves structural work, dirt grading and traffic service gravel, graveling, stabilizing and oiling, or concrete surfacing, or any two or more of them, then wherever practicable and not contrary to any federal law or regulations, separate proposals and bids must be received on each separate type of work.