Greenbelt Road Large Valve Vault Replacement

Washington Suburban Sanitary Commission (WSSC), Maryland is soliciting sealed bids for the Greenbelt Road Large Valve Vault Replacement project, with responses due October 15, 2026 at 2:00 p.m. via WSSC's eProcurement Portal; questions are due October 1, 2026 at 2:00 p.m. The project is located in Greenbelt, Prince George's County, between Lakecrest Circle and the intersection of Lakecrest Drive and Greenbelt Road.

Bidders must meet minimum qualifications: a demonstrated history of installing at least 3 miles of transmission main 16 inches in diameter or greater and at least 10 miles of water main for a water authority, commission, or municipality over the past five years. Project managers and foremen must possess at least three years of experience installing large-diameter utilities. Contractors must demonstrate an OSHA Total Recordable Incident Rate (TRIR) of less than 2.67 for each of the last three years and provide evidence of certified flaggers, traffic managers, erosion and sediment control supervisors, and personnel experienced in pressure tapping and chlorination/de-chlorination operations. MBE and SLBE program participation is required. Prevailing wage rates apply under Maryland law.

The scope includes replacement of approximately 340 feet of 30-inch cast iron pipe and 42-inch prestressed concrete cylinder pipe; installation of 9 feet of 30-inch ductile iron pipe and 331 feet of 42-inch DIP water mains; installation of a new 42-inch water valve vault; and demolition of an existing 36-inch valve vault. The project is awarded on a lump sum bid basis. Bid and performance bonds are required. Payment includes 5 percent retainage under the Maryland Little Miller Act, with progress payments issued within 30 days of Engineer approval. Bidders must complete registration in WSSC's Supplier Portal System prior to submission and acknowledge all amendments.