 The route connects Marrero, an unincorporated suburb of New Orleans, with several small communities located along Bayou Barataria, including the town of Jean Lafitte.It also provides access to the Barataria Unit of the Jean Lafitte National Historical Park and Preserve, a protected area of environmental and cultural significance which, among its many functions, features walking trails through its vast swamps and marshes.Roughly halfway along its route, LA 45 and LA 3134 share a high-level bridge across a section of Bayou Barataria that serves as a link in the Gulf Intracoastal Waterway.