Boardwalk

A boardwalk (alternatively board walk, boarded path, or promenade) is an elevated footpath, walkway, or causeway typically built with wooden planks, which functions as a type of low water bridge or small viaduct that enables pedestrians to better cross wet, muddy or marshy lands. Such timber trackways have existed since at least Neolithic times.
Some wooden boardwalks have had sections replaced by concrete and even "a type of recycled plastic that looks like wood."
An early example is the Sweet... meer