Interstate was founded in 1933 by Robert “Bob” McLean.   Bob began with a partner and one truck that moved produce and lumber products regionally in the Northwest.  As opportunities opened up, Bob was able to grow his fleet of trucks and expand the range of his business into the Western States.  As soon as they were old enough, Bob’s four sons joined him in various roles in the business, eventually taking the company over from their father in the 1980’s.  During the Deregulation years, the company grew quickly and continued its expansion across the lower 48 States.

On July 6, 2017, Interstate was acquired by Heartland Express and will support Heartland’s mission to provide customers with the highest quality of service and safety in the trucking industry.