Complex sentence: Once the rehabilitation of the original bridge was completed, at a total project cost of $80 million and 4 percent over budget, the temporary bridge was removed and used as part of an artificial reef just offshore.
Split into simpler sentences: Once the rehabilitation of the original bridge is completed, at a total project cost of $80 million and 4 percent over budget,. The temporary bridge was removed and used as part of an artificial reef just offshore.