Design and Construction of the Santa Ana River Wash Crossing of the Inland Feeder

by Burt Yu,
Jay Arabshahi,
Birger Schmidt, (F.ASCE),
Roy Cook, (M.ASCE),

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water


The Inland Feeder Pipeline passes beneath the Santa Ana River in Southern California. The flood plain of the river provides the habitat for two endangered species and to avoid surface disturbance to the area, tunneling was selected as the construction method for the crossing. The ground at the site consists of boulders, cobbles and gravels in a sand matrix, with a groundwater table that has large seasonal variations that will require innovative methods of tunnel construction.

Subject Headings: Construction methods | Construction sites | River crossing | Tunnels | Flood plains | Water pipelines | California | United States

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