(C) 2016 GREAT WESTERN CORPORATION
P.O. BOX 986 NORTH BEND, OR 97459 U.S.A.
Phone: (541) 756-5627 | Fax: (541) 756-7800
Since 1986, GWC has been involved in the cathodic protection industry.
The first cathodic protection bridge project done for the Oregon D.O.T.
was the North Approach of the Yaquina Bay Bridge in Newport, Oregon.
We installed various types of cathodic protection to allow ODOT to
monitor results and make decisions about how to use the technology in
future projects. Since that time, we have been involved in the repair, restoration, and
cathodic protection of 7 more historic bridges in Oregon, totaling over a million square feet
of cathodic protection and well over 40,000 square feet of concrete repair. We at GWC
have been honored to have the opportunity to work with ODOT in developing and expanding
the knowledge and procedures as they pertained to impressed current cathodic protection
systems on steel reinforced concrete bridges. Many of the techniques and procedures
developed during our projects are still the Oregon industry standard today, and we continue
to refine our process and work to stay on the cutting edge of the cathodic protection industry.
Oregon’s Historic Bridges:
Other CP Areas:
Consulting:
Inspection & Testing:
Beyond our work on Oregon’s historic bridges, GWC has been involved in two separate
projects in Ketchikan, Alaska installing galvanic cathodic protection systems (with the
provision that they be capable of becoming impressed current systems in the future if the
Owner chooses) on two of the major viaducts. Additionally, we have been involved in the
installation of various types of cathodic protection other structures. On three separate
occasions, we have worked with the Seattle Aquarium to repair & cathodically protect
various portions of their complex. We have also been involved in the cathodic protection
of docks, such as the NOAA Ship Docking Facility in Newport, Oregon. Additionally, we have
provided metalizing services in our shop, such as the Ketchikan Ship Wave Bumper.
We have completed Inspection and Maintenance on the Cathodic Protection Systems on several
ODOT bridges. Most of the work was accessed using a Snooper or a Crane. We tested for
system operation and inspected the zinc coating and anode & negative connections. When each
bridge is complete, the data is organized and submitted to ODOT with a full report on the status of
each zone and each reference electrode.
GWC has been involved in various projects in a consulting capacity. Most recently, we
assisted the prime contractor on a yacht lift-out pier in Marina del Rey, California. On this
project, exploratory repairs were done to determine the extent of the damage. Then GWC
provided repair concepts to the prime contractor and owner, and then followed through
overseeing the repairs to ensure that in the end the owner had a fully functional and
professional end product.
Types of Cathodic Protection Anodes:
We have been involved with the installation of various types of cathodic protection systems
with many different types of anodes. Following is a brief list of some of the products we have
utilized in the past:
•
Zinc Thermal Spray (on concrete & steel)
•
Aluminum-Zinc-Indium Alloy Thermal Spray
•
Porter DAC-85 Conductive Coating
•
Titanium Thermal Spray on Concrete with Catalyst
•
Submerged Anodes
•
Sacrificial Embedded Zinc Anodes
•
Surface Mounted Zinc Anodes on Steel
•
Pile Jackets
•
3M Zinc Hydrogel
We have additionally performed corrosion assessment on various structures throughout the country,
such as the Kuhio Shores Condominium on Kauaii, Hawaii.
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