San Vicente final breakthrough
  • Alert Sign Up
Get the Flash Player to see this video.

September 21, 2009: Contractor Traylor/Shea JV achieves final breakthrough of the 11 mile x 13ft diameter (17.5km x 4m) San Vicente water aqueduct tunnel.

Perseverance paying off at San Vicente - TunnelTalk, Jan 09
San Vicente stumped by tough conglomerate - TunnelTalk, Sept 07

Snapshot

San Vicente final breakthrough

Paula Wallis reports for TunnelTalk
Location:
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
Completion Date:
Tunneling activities began on June 2005 with completion expected in June 2010.