Specifications include, but are not limited to: replaces the existing boardwalk at the Lucy Evans Baylands Nature Interpretive Center with a new accessible boardwalk of the same length and on the same alignment as the existing boardwalk. The new boardwalk will be 5 feet wide and at the same deck elevation as the Interpretive Center. The new boardwalk structure (railings, decking, supports, piles, etc.) will be constructed of various types of timber elements to match the existing structure style and character, and is expected to have a life span of 50 to 75 years. There will be one observation platform at the far end of the structure, and four intermediate overlooks along the structure. Benches with back and arm rests, viewing panels, and sign rails to mount interpretive signage (under a separate future contract) will be provided at the intermediate overlooks and observation platform. Timber gates will be installed at the interface of the Pacific Gas and Electric (PG&E) catwalk where it crosses the existing boardwalk.