The Dutra Group specializes in the construction and rehabilitation of essential marine structures—including bridges, piers, bulkheads, and seawalls—that form the backbone of coastal and waterfront infrastructure. These assets support transportation, commerce, defense, and recreation, making them critical to the daily operations of ports, harbors, and coastal communities.
Our expertise spans a wide range of structural solutions, from pile-supported piers and heavy-duty wharves to engineered seawalls and steel sheet pile bulkheads. Each project is executed with precision, durability, and safety in mind—often in complex environments where tides, weather, and aging infrastructure demand innovative thinking and adaptive construction techniques.
With a history rooted in marine construction, Dutra brings together skilled crews, advanced equipment, and a deep understanding of regulatory and environmental considerations. Whether building new or extending the life of existing structures, we deliver resilient, high-performance waterfront solutions that stand the test of time and tide.
Projects

Dredging
Chevron Terminal Dredging
Chevron seeks 10-year permit to dredge 1.5M cubic yards from Richmond Long Wharf to maintain commercial ship access.

Dredging
Port of Oakland Maintenance Dredging
Port of Oakland maintenance dredging of 6 berths, disposing 1.5M+ cubic yards at Montezuma to repair docks and facilities.

Dredging
Sacramento DWSC
Annual maintenance dredging of Sacramento Deep Water Ship Channel to -30ft, disposing 1M+ cubic yards at upland sites.

Dredging
Mobile Harbor Deepening Phase 4
Mobile Harbor Phase 4 deepened and widened Middle Bay Channel, with dredging and environmental protection measures.

Dredging
Norfolk Harbor
Norfolk Harbor channels deepened to -59ft for larger ships, with dredged material placed at DNODS.

Dredging
Brevard Mid and South Reach
Brevard County beach renourishment restored 12 miles of shoreline using beach-quality material.

Dredging
Pittsburg Basin 3
Pittsburg Marina maintenance dredging of 457K cubic yards to restore navigational depths.

Dredging
Red Hook Flats Anchorage
Red Hook Flats Anchorage dredged to -35/-40/-45ft, removing 500K cy of silt/clay for disposal at HARS site.

Dredging
Hawaii Kaunakakai Harbor Dredging
Kaunakakai Harbor maintenance ensures safe navigation and efficient supply deliveries for Moloka'i's primary port.