The joint venture of Obayashi/Massana was the apparent low bidder for Atlanta's West Area CSO Storage Tunnel and Pumping Station project. Five prequalified contractors submitted bids for the project, which was divided into two contracts. Bidders could choose to bid either contract, or submit a combined bid. Bid results for the combined contracts were:
Contract A, the Clear Creek Tunnel, includes 21,000 lf of tunnel boring machine (TBM) excavated, 24-ft finished diameter deep rock tunnel; 800 lf of drill and blast excavated, 11-ft diameter tunnel; reinforced and non-reinforced concrete lining for portions of the tunnel; one 13-ft diameter flow intake shaft structure and two 40-ft diameter construction shafts. Bid results for Contract A were:
Contract B, the North Avenue Tunnel and Pumping Station, includes 23,400 lf of tunnel boring machine (TBM) excavated, 24-ft finished diameter deep rock tunnel, reinforced and non-reinforced concrete lining for portions of the tunnel, two 40-ft diameter construction shafts, 85 mgd submersible type pumping station and one 24-ft diameter emergency overflow shaft and channel. Bid results for Contract B were:
The City may award single contracts for Contracts A and B or a single contract for Contracts A and B. The City had anticipated an award in March 2004. Construction is to be complete by November 2007.
Shea/Kenny Low Bidder for Milwaukee Harbor Siphons
The joint venture of J.F. Shea Co. Inc. and Kenny Construction was the low bidder for the Milwaukee Harbor Siphons project. The bids were:
The City has not awarded a contract and there was no indication at press time as to when an award may occur.
The project contemplated consists of approximately 6,000 ft of three-barrel siphon sewer constructed in a single bedrock tunnel containing two 72-in. and one 78-in. diameter conduits; approximately 3,500 ft of three-barrel siphon sewer constructed in a single bedrock tunnel containing two 48-in. and one 78-in. diameter conduits; approximately 2,500 ft of two-barrel siphon sewer constructed in a single bedrock tunnel containing one 48-in. and one 72-in. diameter conduits; approximately 2,400 ft of four-barrel siphon sewer constructed in a single bedrock tunnel containing one 42-in., one 48-in. and one 60-in. diameter conduits and one 96-inch diameter conduit.
The project also includes three siphon drop shafts with depths of 250 to 300 feet; one tunnel junction chamber; three flow splitting structures; modifications to two existing siphon valve chambers; connections to existing sewers; access structures and appurtenant work. The project will be located in the downtown portion of the City of Milwaukee and all shafts and tunnels will have strict groundwater control requirements.