Marine Construction - West Bulkhead Replacement at the Cape Cod Canal East Boat Basin in Sandwich, MA   4

The East Boat Basin is a small sheltered harbor for small craft located near the east end of the Cape Cod Canal on the Cape side in Sandwich, Massachusetts. On both sides of the entrance to the harbor, facing the canal, are sheet pile bulkheads. This project will replace the west sheet pile bulkhead with a completely new bulkhead. The existing west bulkhead is approximately 300 feet long with two 60 foot long returns. Behind the bulkhead is a restaurant, a fish unloading station, a parking lot, and open space for public recreation with picnic tables, benches, etc. The existing sheet pile bulkhead, installed in the mid 1980s, is significantly corroded with section loss and damage to structural supports. The existing steel sheet piles were installed five feet in front of an older sheet pile bulkhead, age unknown. The older sheet piles were then cut off about 10 feet below grade. The piles are connected via steel tie rods to a series of concrete dead men located about 50 feet back from the piles. The dead men and portions of the steel tie rods predate the 1980s work. Specific works tasks include, but are not limited to, the following: a. Install new temporary bike path to divert pedestrians around project area. Restore area to original condition upon completing of bulkhead installation. b. Install approximately 440 linear feet of steel sheet piles with interior whalers to create a new bulkhead about five feet in front of the existing bulkhead sheets. Bulkhead top shall be 18 inches higher than existing bulkhead top. Install a system of wood fender piles to protect against ships and boats. c. Install new concrete dead men, tie rods and waler connected to new PZ40 sheet piles. d. Cut off the existing steel sheet piles about 10 feet below grade. Backfill the space between old and new sheet piles with crushed stone. e. Replace light system and existing conduits and protect existing associated power supply system. f. Install new bollards, cleats and concrete foundation for crane davit to replace existing. g. Install a new fence, sidewalk and curb along the entire length of the bulkhead. h. Install new driveway and gate for truck loading at the bulkhead.i. Install new concrete pads for picnic tables and other park features. j. Repair/replace storm drains disrupted by the construction. k. Install new timber bumper piles at corners of the new bulkhead. I. Replace rip-rap as needed near the two returns.

Background
The U.S. Army Corps of Engineers, New England District, is issuing this solicitation for the replacement of the west sheet pile bulkhead at the East Boat Basin located in Sandwich, Massachusetts.

The East Boat Basin serves as a small harbor for small craft and is situated near the Cape Cod Canal. The existing bulkhead, which was installed in the mid-1980s, has suffered significant corrosion and structural damage, necessitating this project to ensure safety and functionality for surrounding facilities including a restaurant and public recreation areas.

Work Details
The project includes various construction tasks such as:
1. Installing a temporary bike path to divert pedestrians around the project area and restoring it post-construction.
2. Installing approximately 440 linear feet of new steel sheet piles with interior whalers to create a new bulkhead positioned five feet in front of the existing one, with the top being 18 inches higher than the current structure.
3. Installing wood fender piles for protection against vessels.
4. Constructing new concrete dead men, tie rods, and walers connected to new PZ40 sheet piles.
5. Cutting off existing steel sheet piles about 10 feet below grade and backfilling with crushed stone.
6. Replacing the light system and conduits while protecting existing power supply systems.
7. Installing new bollards, cleats, and a concrete foundation for a crane davit.
8. Constructing a new fence, sidewalk, and curb along the entire length of the bulkhead.
9. Creating a new driveway and gate for truck loading at the bulkhead.
10. Installing concrete pads for picnic tables and park features.
11. Repairing or replacing storm drains affected by construction activities.
12. Installing timber bumper piles at corners of the new bulkhead and replacing rip-rap as necessary near returns.

Period of Performance
The contractor is required to begin performance within 5 calendar days after receiving notice to proceed and must complete all work within 410 calendar days.

Place of Performance
The construction work will be performed at the East Boat Basin located in Sandwich, Massachusetts.