If a county road is in danger of being damaged or destroyed by tidewaters the board of chosen freeholders may by a two-thirds vote, acquire by gift, purchase or condemnation, lands and meadows adjacent to the road and maintain the banks along such lands and meadows for the protection and preservation of the road. If an income can be derived from any land so acquired it shall be paid to the county treasurer. Condemnation proceedings, when resorted to, shall be brought in accordance with the provisions of article 2 of this chapter (s. 27:16-42 et seq.).