<body><div><img src="https://img.particlenews.com/image.php?type=thumbnail_580x000&amp;url=0zHWwS_1H0LJqas00" alt="https://img.particlenews.com/image.php?url=0zHWwS_1H0LJqas00" width="1200" height="630" >With SpaceX coming to Vermilion Parish, new roads and bridges will have big impacts on the wetlands as the existing roadways already have had. The wildlife, plants and marsh access in our coastal zone all rely on tidal exchange. Building a road on grade across the marsh blocks the movement of the tide, both subterranean and over the top.The typical marsh that loses tidal exchange is impacted in several ways. First, loss of botanical diversity affects most of the plants that feed waterfowl. There are only a couple of marsh plants that survive the loss of tidal exchange. Next, water quality suffers. Salinity skyrockets and some of the tidal wetlands’ salinity is two or three times that of the Gulf. Third, there is the loss of fisheries and wildlife, including shrimp, menhaden, juvenile trout and all the estuarine-dependent fish that cannot jump a road or a continuous spoil bank. Muskrat, mink and otters are lost as well.Ninety percent of coastal land loss is not at the edge but is the result of an internal breakup of marshland which happens behind the impoundments, many of which are formed by existing roadways. Current marshland roads should be elevated and future road projects should be designed to allow the tidal exchange to occur.The scientific muscle working to send rockets to Mars should be put to use to correct some of the badly designed roadways and impoundments that are part of the reason we’re losing the marshes of Vermilion Parish.HAROLD SCHOEFFLERLafayette</div></body>

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With SpaceX coming to Vermilion Parish, new roads and bridges will have big impacts on the wetlands as the existing roadways already have had. The wildlife, plants and marsh access in our coastal zone all rely on tidal exchange. Building a road on grade across the marsh blocks the movement of the tide, both subterranean and over the top.

Letters: SpaceX should fix badly designed marsh roadways

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With SpaceX coming to Vermilion Parish, new roads and bridges will have big impacts on the wetlands as the existing roadways already have had. The wildlife

Letters: SpaceX should fix badly designed marsh roadways

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