The Chemins de fer électriques de la Gruyère constructed the branch line in 1912, with the section from Bulle to Les Marches opening on 29 January and from Les Marches to Broc on 24 June.

[3] In 1942, the CEG merged with two other companies to form the Chemins de fer fribourgeois Gruyère–Fribourg–Morat (GFM).

[6] TPF closed the line in April 2021 to permit a complete rebuilding and conversion to standard gauge.

In addition, the stations of La Tour-de-Trême, Broc-Village, and Broc-Fabrique were rebuilt for better handicapped access.

[8] Broc-Fabrique was renamed Broc-Chocolaterie in December 2023 to emphasize the adjacent Cailler chocolate factory.