NEW CASSEL, N.Y. (CBSNewYork) – A ribbon cutting ceremony was held Thursday morning in New Cassel as the Long Island Rail Road celebrated the first of five grade crossings to be turned into an underpass.

Time-lapse video shows the construction process on Urban Avenue.

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The street was closed back in March so it could be rebuilt as an underpass beneath the LIRR’s main line.

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Web Extra: Ribbon Cutting Of New Cassel Underpass

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MTA officials say the underpass will improve safety, train reliability and traffic.