Complex sentence: Alberta had long-terms plans for Highway 23 to be twinned, and for the Monarch interchange to be expanded to a partial cloverleaf, and the possibility of a southern Monarch bypass had already been identified by the mid- 1980s.
Split into simpler sentences: Alberta had long-term plans for Highway 23 to be twinned, and for the Monarch interchange to be expanded to a partial cloverleaf. The possibility of a southern Monarch bypass had already been identified by the mid- 1980s.