Snapshot
San Vicente final breakthrough
Paula Wallis reports for TunnelTalkLocation:
San Vicente, CA USA
Project:
San Vicente water aqueduct tunnel
Tunnel:
11 mile x 13ft diameter (17.5km x 4m)
Contract Value:
$198.4 million
Owner:
San Diego County Water Authority
Contractor:
Traylor/Shea JV
Construction Manager:
Parsons Engineering
Designer:
Jacobs Associates
Excavation Methods:
Reach 1 - Robbins TBM
Reach 2 - CTS1 Open digger shield
Reach 3 - Drill+blast
Reach 4 - CTS2 Open digger shield
Reach 5 - Drill+blast, NATM, Robbins TBM
Reach 6 - Robbins TMB
Reach 2 - CTS1 Open digger shield
Reach 3 - Drill+blast
Reach 4 - CTS2 Open digger shield
Reach 5 - Drill+blast, NATM, Robbins TBM
Reach 6 - Robbins TMB
Completion Date:
Tunneling activities began on June 2005 with completion expected in June 2010.
