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OCTA OC Streetcar Project, Santa Ana, CA The OC Streetcar project consists of the design and construction of a two -track streetcar system from the Santa Ana Regional Transportation Center (SARTC) in Santa Ana to the proposed Regional Transit Connection and station in Garden Grove, approximately 4 miles. The project also includes design and construction of a maintenance and storage facility and two new bridge structures. The maintenance and storage facility is planned to house all light revenue maintenance functions, including operations. This will accommodate administration, operations, maintenance, repair bays, and parts storage. A maintenance building, a wash building, parking lots, and a fire lane are also included. The Santa Ana River Bridge is an approximately 356-foot-long, 3-span, precast, pre -stressed concrete, Caltrans, wide -flange girder bridge. Spans vary from approximately 80 to 138 feet and will carry the OC Streetcar light rail tracks over the Santa Ana River and adjacent Santa Ana River Trail. Traffic on the bridge consists of two tracks. Two reinforced concrete pier walls were proposed for the river piers. Short seat abutments on a single row of cast -in -drilled -hole (CIDH) piles were proposed to minimize earthwork, accommodate thermal movements, and use the same foundation type as the piers. The Westminster Avenue UP was proposed as an approximately 23 1 -foot-long, 2-span, cast -in -place, post -tensioned concrete box girder bridge. Spans are approximately I I I to 120 feet long and will carry the OC Streetcar light rail tracks over Westminster Avenue. Traffic on the bridge consists of two tracks. High, cantilever abutments were proposed to minimize span length. A single, non -skewed, oblong column bent was proposed to fit within the available 14-foot median width, measured face-to-face of curb, on Westminster Avenue. DYA provided a Phase I Hazardous Waste Environmental Site Assessment for the portion of the project within OCTA's Pacific Electric Railway right-of-way from Harbor Boulevard to North Raitt Street and a geotechnical investigation for the entire alignment, including soil borings, laboratory analysis, engineering analyses, and geotechnical reports. DYA subsequently performed a supplemental environmental site investigation in the Pacific Electric right-of-way and has been providing construction support and observation services. Key DYA Personnel: S. Niranjanan, PE, GE — Geotechnical Manager Christopher M. Diaz, PE, GE — Geotechnical Principal Chaitanya (KC) Kukutla, EIT — Environmental Engineer Jorge Sandoval, PE, GE — Construction Observation Owner: Orange County Transportation Authority Mr. William Farthing, PE Program Manager 550 S. Main St. Orange, CA 92863 bfarthina(a oeta net 714-560-5813 Completion Date: 2020 (Fall) DYA Client: HNTB Mr. Terry Nash Vice President 200 East Sandpointe Avenue, Suite 200 Santa Ana, CA 92707 tIA0hntb.com 480-262-5994 DYA Fees: $1,183,700 (To Date)