Complex sentence: The re-routed section was constructed in the 1930s and had a branch of the Leeds Tramway running along the central reservation until the 1950s, the proposed Leeds Supertram was also to run this route.
Split into simpler sentences: The re-routed section was constructed in the 1930s and had a branch of the Leeds Tramway running along the central reservation until the 1950s. The proposed Leeds Supertram was also to run this route.