Category Archives: State

Canal Modifications South Bay Aqueduct Enlargement

Work on the Canal Modifications included raising the concrete canal lining and canal embankment along thirteen miles of canal.  PrōVen removed over-chutes, demolished drop-inlets, constructed new over-chutes, and re-graded drop-inlets.  We also made significant modifications to Patterson Reservoir, both increasing its capacity and rebuilding its basin. Location: Alameda and Santa Clara Counties Livermore, California Start Date: November...

Ulatis Creek Bridge Renovations

The Work on Interstate 80 included a variety of improvements to the existing pair of Caltrans Bridge Structures over Ulatis Creek in Vacaville. Major structural improvements to the bridges involved installation of six foot diameter drilled piers nearly 100 feet deep.  The piers were connected to the existing bridge abutments with cast-in-place...

Central Freeway Replacement

PrōVen constructed a viaduct consisting of CIDH piles, concrete columns, and steel girders.  We constructed a bridge a quarter of a mile over live traffic in a congested urban environment in downtown San Francisco.  Work on the quarter mile long structure included drilled piers, massive architectural concrete columns, wood falsework over live...