FlatironDragados and Sukut have notice to proceed on a $1.9 billion dam. They won’t start rebuilding it until early 2027.
Hochtief announced on Aug. 21 that its FlatironDragados subsidiary and Santa Ana-based Sukut Construction have commenced work on the Anderson Dam Seismic Retrofit in Morgan Hill, California, following notice to proceed from the Santa Clara Valley Water District. The distinction between commencing work and starting construction is the whole story here, and it’s the part most coverage has blurred.
The numbers, kept straight
$1.9 billion is the retrofit contract. $2.8 billion is the overall program. Several outlets have run those together, and some report the contract at $1.88 billion. Valley Water awarded the contract earlier this year; the Aug. 21 news is the NTP and the start of preconstruction, with significant construction expected in early 2027.
Scope covers reconstructing the dam embankment and spillway, installing new outlet infrastructure, and completing roadway, utility and environmental work to bring the structure to modern seismic standards. Anderson Reservoir is Santa Clara County’s largest surface reservoir, supporting water supply, groundwater recharge and incidental flood protection for close to two million residents. Our full listing for the Anderson Dam Seismic Retrofit Project carries the team and status detail.
The tunnel is why the schedule looks like this
FlatironDragados is nearing completion on the Anderson Dam Tunnel, a 1,700-foot, 24-foot-diameter bore started in 2021 that becomes the reservoir’s permanent low-level outlet.
Nothing else can happen until it’s done. The tunnel is what lets Valley Water draw the reservoir down far enough to take the embankment apart, which is why five years of tunnel work precede any earthmoving on the dam itself. Owners who look at a dam safety program and see a long mobilization period usually aren’t looking at the diversion works.
A second California dam, same week
Anderson isn’t alone. The U.S. Army Corps of Engineers awarded Barnard Construction $1.13 billion in March to rebuild the spillway at Prado Dam above Corona, with a labyrinth control structure replacing the 1941 original and construction likewise not starting until spring 2027.
Two California dam retrofits, both north of a billion dollars, both with multi-year preconstruction runs, both keeping the structure operational throughout. That’s the shape of the work now: the sequencing and the diversion scheme are the engineering problem, and the earthwork is what happens after you’ve solved it.
Why it matters
The water market has repriced. “Today, almost every large municipality, water resource district, whatever it may be, has a billion-dollar-plus capital improvement plan,” said Jaren Murphy, president of water at McCarthy Building Cos., speaking about the broader sector rather than this project. “The overall growth of this market has really been incredible the last five years.”
For contractors, the practical read is that dam safety work rewards firms that can carry a job through a long, low-revenue preconstruction phase. FlatironDragados has been on this site since 2021 and won’t turn meaningful dirt for another year and a half. That’s a balance sheet requirement as much as a technical one, and it narrows the bid list considerably.