Harris Transportation Company was formed in 1998 as a joint venture between Harris Transport of Portland, Ore., founded in 1928, and Trimac Transportation, founded in 1948. Harris Transportation Company is one of the largest petroleum bulk carriers in the United States Northwest, serving Oregon, Washington and Idaho. Its customers are major oil companies, hypermarkets and wholesale/retail distributors of petroleum products. The company utilizes a centralized dispatch system and information technology to provide one-stop shopping for deliveries throughout the Northwest region. Harris Transportation Company maintains its corporate office in Portland, Ore., and operates from nine strategic locations.