Services

Defying Gravity

DOWL’s team of bridge, structural, and marine project managers, engineers, and technicians offers a wealth of trusted experience in a wide variety of design projects. From big to small, and from private facilities to public infrastructure, we’re ready to help with your next project, whether it’s a new bridge, water-based port facility, retaining wall, seismic retrofit, or water tank.

Practice Lead

Guy Hakanson, PE

541.683.6090

Sub Practice Areas

Minto Island Bridge in Salem, Oregon

Bridge

With thousands of projects under our belt, we're proud to be a regional leader in concrete, steel, and timber bridges. Whether it is a single-span concrete bridge, a multiple-span curved steel girder bridge, or a historic bridge rehabilitation, our proven approach provides clients with creative, efficient solutions. With a focus on constructability, our team determines how to build the bridge early in the design process. This focus, and our broad experience, including accelerated bridge construction (ABC), results in designs that reduce contractor risk and lower construction costs.

List of Services
  • Pretensioned and post-tensioned, precast concrete bridges
  • Post-tensioned, cast-in-place concrete bridges
  • Straight and curved steel plate girders
  • Steel trusses
  • Unique long-span pedestrian bridges
  • Arch bridges
  • Historic bridge rehabilitation
  • Timber covered bridges
  • Load ratings and in-service bridge inspection
  • Seismic evaluation and retrofit design
Team Lead
Bob Goodrich, PE

503.589.4100

Raw Intake Pump Station, Lake Oswego-Tigard Water Partnership

Structural

Our structural design team offers decades of experience in both new and existing construction, specializing in public infrastructure and industrial structures. We provide cost-effective, straight-forward, constructible solutions, with a focus on resiliency. We are proud to have successfully helped many long-term clients establish and achieve their seismic performance goals.

List of Services
  • New facilities
  • Existing structural rehabilitation
  • Seismic retrofit design
  • Retaining walls
  • Sign structures
  • Buildings
  • Equipment supports
  • Foundations/pilings
  • Specialty industrial structures
Team Lead
Nick Robertson, PE, SE

503.620.6103

Port of Siuslaw Floating Dock in Florence, Oregon

Marine

Marine structures require a specialized approach, and we thrive on tackling unique project challenges like this. With decades of proven experience, we focus on practical function as well as aesthetics to support both commercial and recreational users. Our expert staff provides planning and practical design for new marine infrastructure. We also assist public agencies, ports, port tenants, and others in maintaining their existing facilities with critical upgrades, retrofits, and rehabilitations.

List of Services
  • Condition assessment and repair of existing facilities
  • Seismic evaluation
  • Boardwalks and gangways
  • Floating docks
  • Wharves and piers
  • Dolphins, docks, and boat/barge tie-up facilities
  • Bulkhead and seawall design
  • Boat ramps
  • Marina design
Team Lead
Guy Hakanson, PE

541.762.2097