[2] When the Los Angeles Railway was restructured in 1920, the Sixth Street and Stephenson Avenue lines were merged and streamlined.

The western terminus was extended northwest along 3rd Street and Larchmont Boulevard to Melrose Avenue, while the eastern terminus was extended beyond city limits to a loop track between the Calvary and Beth Israel Cemeteries.

The addition of new trackage over the Los Angeles River now allowed the route to run entirely on Seventh Street between Alvarado and Boyle, making trips across Downtown significantly shorter and quicker.

[2] In 1931, the construction of several linking tracks allowed R's western portion to run on an entirely new route, from East Los Angeles to the new Fairfax District by way of Whittier Boulevard, Boyle Avenue, 7th Street, Vermont Avenue, and 3rd Street.

In 1950, a branch line was run on Western Avenue between 3rd street and Santa Monica Boulevard.