Balfour Beatty completed the Metro Gold Line East Side Extension in 2009 in a joint venture with Steiny and Company, a Los Angeles-based electrical contractor. As part of the JV, Balfour Beatty designed, furnished, installed and tested all system components for the extension including signaling, communications, traction power and the overhead catenary system. Balfour Beatty also completed the design of the train signaling system, overhead catenary system and traction power system.

Included in the scope of work were the furnish and installation the electrical, traffic and street lighting systems, train signaling system and communication systems.

The project included six miles of double track consisting of embedded, direct fixation and ballasted rail, eight passenger stations – with two underground – and six traction power stations. The communications systems included PA, CCTV, Intrusion, Gas Monitoring, Fire Alarm, SCADA, Fire and Emergency System, Emergency Trip System, Telephones, VMS, Radio and upgrades and expansion to the operations center.

The project began at the southern limit of the LA Union Station, which at the time of the contract was the last Metro Gold Line station. It continued at-grade for about 1.5 miles. The underground segment of the project involved the construction of two double-level underground stations and the installation of the double track.