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(1) All bridges shall be designed and constructed to provide for the passage of regulatory floodflows. The total design of the bridge, its road approaches and associated utilities and bank stabilization shall allow for floodflows to pass under or around the bridge structure without resulting in a significant damming of the stream plans may be submitted to the public works director for review.

(2) The minimum floodway width shall be maintained. When center support piles are necessary, the structure shall be designed to withstand floodwater velocities with debris hangup and shall not result in increased flood depth or velocities.

(3) Culverts shall be sized to adequately pass regulatory flood flows. The culverts and road shall allow floodwaters to pass through, over or around the road without causing significant damming of the stream. Plans may be submitted to the public works director for review.

(4) Docks, piles and bridge abutments shall be designed to withstand regulatory floodflows and the additional hydrologic pressures associated with debris hangup on the structure during a flood. (Ord. 377 § 5.2(F), 1996)