Little Tokyo Station siteTBM Angeli in lauch shaftTBM Angeli in launch shaft 22nd Broadway wall rebarPrecast segmental tunnel lining rebarPolypropylene fiber for tunnel lining fire protectionTBM Angeli breakthrough last 2nd-Hope stationPreparing for 2nd breakthrough at 2nd-Hope stationRemoving Temporary Steel RingsPecast segmental tunnel lining with conveyor beltCompleted TunnelCrosspassage ConstructionTunel with walkwayCompleted tunnel with trackTunnel Omega Seal2nd-Hope station constructionSEM Cavern – Center drift excavationSEM Cavern – Center drift excavationSEM Cavern – Demolition of center wallsSEM Cavern excavation near completionSEM Cavern – Looking toward 2nd-Broadway StationSEM cavern HDPE installationSEM cavern rebar installationSEM cavern concrete workSEM cavern constructionSEM cavern crown constructionSEM cavern contact grouting2nd Hope station rendering 22nd Hope station renderingSEM cavern crossover completion2nd-Hope station construction2nd-Hope Station Construction2nd Hope elevator headhouse2nd-Hope station construction2nd Broadway Station rendering2nd-BroadwayStationConstruction2nd-Broadway station construction2nd-Broadway station construction2nd-Broadway station roof construction2nd Broadway utility hanging2nd Broadway embedded conduits2nd Broadway starter bars for future overbuild2nd Broadway site overviewLittle Tokyo Art Disctrict Station renderingLittle Tokyo Station platformFlower Street excavation utility hangingFlower street muck shaftAlameda embedded track construction1st Street portal constructionFloating slab track productionFloating slab track installationFloating slab track installationFloating slab track installationLow vibration track (LVT) constructionLow vibration track (LVT) InstallationLow vibration track (LVT) completion
The Regional Connector Transit Corridor is an underground light rail link that goes through the downtown Los Angeles and connects the Metro Gold Line to the Metro Blue Line and future Expo Line via Flower Street and 2nd Street. The project consists of approximately 1.9 miles of cut-and-cover and 21-foot diameter twin bored tunnels, three underground stations, a sequential excavation method cavern (60 feet wide, 38 feet high, and 300 feet long), and U-section guideway. The project has been successfully completed and opened to public in June 2023.
VNTU Inc. is serving as a subconsultant to the Connector Partnership Joint Venture (CPJV), led by AECOM and WSP, to support LA Metro to review all the design and construction submittals of this complex subway project. Mr. Vu is serving as the lead structural and geotechnical reviewer to review design of bored tunnels, cut-and-cover tunnels, underground stations, SEM cavern, crosspassages, support of excavation, permeation and compensation grouting for building protection, building underpinning, and geotechnical reports submitted by the design-builder during the final design phase. During the bidding and preliminary engineering phases (while he was working at AECOM and Jacobs Associates), he worked on updating geotechnical baseline report and support of excavation drawings; prepared the building and adjacent structure protection report; conducted field visits to evaluate and document existing conditions of critical structures along bored tunnel sections; performed analyses to assess potential impacts of the bored tunnels to the adjacent buildings and utilities; and developed mitigation plan and instrumentation drawings.
