Covered bridge manual.

Turner-Fairbank Highway Research Center, McLean, Va.Mode of access: Internet.Author corporate affiliation: Pierce, Phillip C., Treadwell, N.Y.""April 2005."Includes bibliographical references (p. 313-326)Final report; Oct. 2000-Nov. 2004Subject code: CDLSubject code: WBSubject code: YDBSubject code: WOESubject code: B