DC Water Launches Tunnel Boring Machine Mary, Marking Important Step for Potomac River Tunnel Project

Estimated Value: $100,000,000
Open Washington DCConstructionrfq
Apr 15, 2026
Construction
rfq
AI Summary
This is a notice from DC Water about the Potomac River Tunnel Project. The project involves excavation using a tunnel boring machine named Mary.
Line Items
ItemQtyUnitEst. Unit PriceEst. TotalCategory
Tunnel Excavation Services 1 lot $50,000,000.00 $50,000,000.00 Construction
Tunnel Boring Machine (TBM) Operation and Maintenance 1 lot $30,000,000.00 $30,000,000.00 Construction
Tunnel Support and Lining 1 lot $20,000,000.00 $20,000,000.00 Construction
Estimated Bid Value$100,000,000.00

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