Hanna

In the year 1916 the plaintiffs subdivided a tract of land owned by them and filed a map thereof on which the tract was designated as “Bay Addition to the Town of Crockett.” May 20, 1917, they conveyed lot 5, block 3, of the tract to Rudolph Normandsen. The deed of conveyance contained the following provisions:

October 14, 1920, Normandsen conveyed the lot in question to Hans A. and Alice Miller, who conveyed the same to defendant Rodeo-Vallejo Ferry Company October 20, 1923. At the time of the latter conveyance there was no building or structure upon the lot except a dwelling-house. Shortly thereafter the Rodeo-Vallejo Ferry Company and the defendant American Toll-Bridge Company commenced the construction on lot 5 of “a terminal of a bridge to span or cross the Carquinez Straits, and . . . the erection of large concrete pillars and abutments ... to support said bridge and said terminal.” The concrete abutment was-completed in July, 1924. It was about twenty-five feet high and forty feet long, “in the form of an ordinary bridge abutment, narrow at the top and sloping down as a retaining wall,” and was designed to “carry the end of the steel viaduct that forms the end bearing for…