Transportation:

Transportation: A. Bridging must be used in preference to filling to create roadbeds, railways, and other transportation facilities. Suitable erosion control methods must be used on bridge approaches. B. Structures must be designed to preserve natural water flow and circulation regimes and to prevent excessive shoaling or erosion. C. Except for the construction of replacement bridges and approaches, transportation improvement projects must generally follow existing alignments in coastal wetlands. D. Transportation facilities must be designed to accommodate other public utilities, thus avoiding other unnecessary coastal wetland alteration. An example would be the use of existing rights-of-way and bridges to accommodate cables, transmission lines or pipelines. E. Roadway embankments and fill areas must be stabilized by utilizing appropriate erosion devices and/or techniques to minimize erosion and water quality degradation problems. 1. Where appropriate, culverts are requiredin order to maintain normal tidal influence and minimize disruption of drainage patterns. F. All streams must be bridged or provided with culverts to prevent alterations to tidal influence and natural drainage patterns. G. Culverts or similar structures must be installed under the road at appropriate intervals (never more than two hundred and fifty (250) feet apart) to prevent blockage of surface drainage or tidal flow, with all culvert openings being subsequently maintained. MISS. CODE ANN. §§49-15-304, 49-27-59, 57-15-6, 57-15-10.