(a) Bridges and culverts shall be designed to carry expected vehicular loads as per specification of the State Department of Transportation. Bridges shall be constructed to the full width of the pavement and culverts shall be constructed to the full width of the right-of-way or further as required by the Village Engineer.
(b) Culverts, in general, shall be designed in accordance with State Department of Transportation Location and Design Manual criteria. Culvert alignment should follow that of the natural channel and thereby preclude the need for major channel changes to reduce turbulent and erosive conditions. Exceptions to the design criteria include:
(1) Culverts can be made of corrugated metal pipe, reinforced concrete pipe, or high density polyethylene pipe (with or without smooth interior). Corrugated metal pipe may not be used under pavements or sidewalks.
(2) The most recent Lane Use Development Plan shall be used in conjunction with topographic information in determining upstream drainage areas and the associated storm runoff.
(3) Culverts shall normally be designed for a twenty-five-year storm frequency. Final determination of the culvert size shall be made by the Village after review of documentation provided by the developer.
(4) Minimum culvert size shall be 12 inches.
(5) The design discharge ("Q") shall be computed using the USDA SCS TR-55 method.
(c) Bridges in general shall be designed in accordance with State Department of Transportation Bridge Design Manual criteria. Exceptions to the design criteria include:
(1) The most recent Land Use Development Plan shall be used in conjunction with topographic information in determining upstream drainage areas and the associated runoff.
(2) The design flood frequency shall normally be for a five-year storm event. (Ord. 81-56. Passed 12-28-81; Ord. 88-5. Passed 3-7-88; Ord. 91-35. Passed 5-20-91.)