The Westport pier was located in Westport.
It was the place where thirteen-year-old Sarah Jane Smith's best friend Andrea Yates fell off a pier and drowned on 13 July 1964. The Trickster appeared and coaxed Andrea to switch places with Sarah Jane, creating an alternate timeline where she died instead. After spending over forty years in the altered timeline, Andrea revoked her deal with the Trickster and allowed herself to perish once again, restoring the original course of the timeline. Andrea died at the pier and her last words to Sarah Jane were: "Remember me." (TV: Whatever Happened to Sarah Jane?)