The depot building opened in 1894 at the intersection of the Fitchburg Railroad and Old Colony & Montreal Railroad. Named, appropriately, Concord Junction. The Fitchburg Railroad became part of the Boston and Maine Railroad in 1900 and the Old Colony Railroad was absorbed into the New York, New Haven and Hartford Railroad. Through freight was carried on the New Haven tracks for many years afterward, although passenger service was halted in the 1930s.

Concord Junction became "West Concord" and is known as that to this day. It is served from Boston by MBTA Commuter Rail.

From the archives: a 6-car train headed by B&M locomotive #3608 passes W. Concord, headed to Rutland, VT on March 27, 1930.

This 1893 map shows "Union Station," and the crossover of the Fitchburg Railroad (later Boston & Maine,) and New York, New Haven & Hartford railroads at the upper left of the photo. The Concord Reformatory is at the lower right.

A lone baggage wagon, a telephone sign, and wide open doors make a rather bleak picture of Concord Junction's "Union Station." At the time of the photo, it was the crossover of the Fitchburg Railroad (later Boston & Maine,) and New York, New Haven & Hartford railroads. The crossover track can be seen in the lower right of the photo. NYNH&H was single-track; the camera is stationed on the dual-track B&M main.

From a newspaper article, this picture is notable for the absence of motor cars, and for the semaphore signals which served at the crossover of the tracks. A quiet day in Concord Junction, though the number of Boston & Maine boxcars indicates significant rail traffic in the town.