Arrowhead tunnels complete - TunnelCast
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September 28, 2009: The $1.2 billion Inland Feeder project in Southern California was placed into fullscale operation marking the end of more than 12 years of construction. The Arrowhead Tunnels are a vital element of the 44 mile (71km) water conveyance system extending from the termination of the State Water Project in San Bernardino to the Colorado River Aqueduct.

Snapshot

Arrowhead Tunnels for the MWD

Location:
San Bernardino, California
West Tunnel:
6km long (3.7 miles) x 5.8m (19ft)
East Tunnel:
6.8km long (4.2 miles) x 5.8m (19ft)
Type:
Water Tunnels
Contract Value:
$385 million, awarded May 2002
Method:
Single shield hard rock
Contractor:
Shea/Kenny JV
Designer:
Construction Management:
TBM supplier: