Premium Content Subscriber only It was the LNPâs pet project â thought to be a winning election pitch that now remains up in the air. Momentum has fallen flat on the Mooloolah River Interchange as the multimillion-dollar project sits idle. The Queensland Government is yet to confirm a timeline for the much anticipated project at Mountain Creek as it remains in the business case phase. Transport and Main Roads map of the Mooloolah River Interchange. Member for Maroochydore Fiona Simpson has had enough, calling on the State Government to get a move on. âI just want it started,â she said.