Delaware Code Title 17. Highways § 529. Inspection requirements for bridge owners

(a) As used herein, the terms “bridge” and “bridge with approaches” are defined as structures, including supports, erected over a depression or an obstruction such as water, a highway or a railway, with tracks or passageways for carrying traffic or other moving loads, and with openings measured along the center of the roadway of more than 20 feet (6.1 meters) between undercopings of abutments or spring lines of arches, or the extreme ends of openings for multiple boxes.  The term “bridge” shall also include multiple pipe structures where the clear distance between pipe openings is less than half of the smaller pipe diameter(s), and the combined structure exceeds 20 feet (6.1 meters) in total span length.

(b) All bridges and bridges with approaches located on or over public roads must be inspected in accordance with The National Bridge Inspection Standards, as codified in 23 C.F.R. Part 650, Subpart C, as amended, and in accordance with the following provisions: