Purple Line Extension, Section 3 Tunnels
TUTOR PERINI AFFILIATES
Frontier-Kemper / Tutor Perini
Contract Amount: $410 Million
Support of excavation subcontractor
Contract Amount: $9.2 Million
Desert Mechanical Inc.
Contract Amount: $5.8 Million
Los Angeles County Metropolitan Transportation Authority
Los Angeles, CA
Design-Build project consisting of two 22-foot diameter twin bore subway tunnels. Each tunnel is 13,680 linear feet with 14 cross-passages. The tunnels will be excavated utilizing a Herrenknecht Earth Pressure Balance Tunnel Boring Machine with precast concrete segments as the final lining. Tutor Perini is also the Design-Build contractor for the Purple Line Extension Section 3 Stations project that will add two additional stations at Wilshire/Westwood and on the U.S. Department of Veterans Affairs property.
Photo Credits: LACMTA