Complex sentence: The third Friendship Bridge, opened to traffic on 11 November 2011, across the Mekong River, is a major link between Thakhek city in the Khammouane Province and the Nakhon Phanom Province in Thailand.
Split into simpler sentences: The third Friendship Bridge opened to traffic on 11 November 2011 across the Mekong River. It is a major link between Thakhek city in the Khammouane Province and the Nakhon Phanom Province in Thailand.