Complex sentence: The company built a branch to Ballachulish, which included the construction of a remarkable bridge at Connel over Loch Etive; the branch opened in 1903, but although it opened up remote areas it was never commercially successful.
Split into simpler sentences: The company built a branch to Ballachulish, which included the construction of a remarkable bridge at Connel over Loch Etive. The branch opened in 1903, but although it opened up remote areas it was never commercially successful.