Complex sentence: The Broad Canal has been used much more since the re-opening of the Huddersfield Narrow Canal in 2001, as it is no longer a dead end, but part of one of three cross-Pennine through-routes.
Split into simpler sentences: The Broad Canal has been used much more since the re-opening of the Huddersfield Narrow Canal in 2001. This made the Broad Canal part of one of three cross-Pennine through-routes.