The board of chosen freeholders of any county contemplating the improvement of a road shall designate the kind of material to be used, adopt plans and specifications therefor, and advertise for proposals for doing the work under the plans and specifications adopted and with the materials designated.
It may solicit bids for the work before the passage of a resolution providing for the improvement, and announce the bids at the meeting of the board at which the resolution is considered, and may award a contract under such bids at the meeting at which the resolution providing for the improvement is adopted, or at another regular, special or adjourned meeting.