Constructed and operated by the Kenton Traction Company to ferry workers from the company town of Kenton to the Union Stockyards and other industrial businesses on the Columbia River. As most of the line was outside Portland city limits, an extra 5-cent fare was charged to ride.

The Kenton Traction Company leased cars from the Portland Railway, Light & Power Company, which were probably housed at that company’s Piedmont barns, although there is evidence that there was some sort of car barn in Kenton as well – See: Kenton Car Barn (1911?). However, power for the line was generated at the Monarch Lumber Company plant.

Closure of the line is not a cut and dried affair: while it seems probable that regular passenger service ended in 1928 as stated by Labbe and Thompson, special event service to the stockyards continued until at least 1933 before finally being replaced with buses.

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