Los Angeles to Pasadena Gold Line
The Los Angeles to Pasadena Gold Line Extension project consisted of a 13.7-mile extension of the Blue Line beginning at Union Station in Los Angeles and ending east of Sierra Madre Villa Avenue in Pasadena. This light rail transit (LRT) line consists of a double tracked system using electric current overhead wire. The project is primarily at-grade following the abandoned Atchison Topeka & Santa Fe (ATSF) Railroad right-of-way. There are a total of 13 stations. The extension includes an aerial structure in Chinatown, and depressed box sections in Highland Park and in the Old Town area of Pasadena. Near the southern portion of the alignment, a new yard and shop was developed. The overall project had been divided into ten (10) segments by the design-build Contractor. Delta Engineering Group (DEG) was a sub consultant to the Joint Venture of Parsons, Washington, and Kiewit, the design-build Contractor. DEG provided 10 segment reports, 13 station reports, two seismic retrofit reports, and one new pedestrian overcrossing report. Reports for Segments 4 and 8 included the Figueroa and Colorado boxes, which are being constructed using cut-and-cover method. The reports provided recommendations for retaining walls, MSE walls, stations and platforms, track design, excavation and shoring, probabilistic seismic hazard assessment, static and seismic earth pressures for temporary shoring and permanent walls, racking displacement of the tunnel sections during seismic event, slope stability, Caltrans Structure Foundation reports, etc.
- Bridge crosses an active fault
- 13 Ft diameter piles
- First Design-Build project for Gold Line Authority
- Long span light rail bridge over Caltrans right-of-way (SR-210)