Section 660.113 - Construction(a) No construction shall be undertaken on any FH project until plans, specifications, and estimates have been concurred in by the cooperator(s) and the FS, and approved in accordance with procedures contained in the statewide FH agreement.(b) The construction of FHs will be performed by the contract method, unless construction by the FHWA, the FS, or a cooperator on its own account is warranted under 23 U.S.C. 204(e) .(c) Prior to final construction acceptance by the contracting authority, the project shall be inspected by the cooperator, the FS, and the FHWA to identify and resolve any mutual concerns.