Sec. 2. A city acting under this chapter may:
(1) construct or install the flood control works necessary to exclude, divert, remove, reduce, or prevent flood waters caused by the overflowing of watercourses or by storm or surface waters in or about a flood control district established under this chapter; and
(2) construct or elevate highways and bridges necessary to provide reasonable traffic facilities through or over any structures constructed as part of the flood control works.