Section 30004 Of Article 1. General Provisions From California Streets And Highways Code >> Division 17. >> Chapter 1. >> Article 1.

. "Toll bridge," "bridge," "subway," "tunnel," "tube," and "highway crossing" include all appurtenances and additions, alterations or improvements thereto or replacements thereof, and the approaches to each end thereof, all lands and interest therein used therefor, and buildings and improvements thereon.