Complex sentence: The $250 million bridge's design, location, and span were created to allow easier navigation for boats crossing underneath, and safer driving with four 12-foot lanes, 12-foot outside shoulders, and 8-foot inside shoulders.
Split into simpler sentences: The $250 million bridge's design, location, and span were created both to allow easier river navigation and safer driving. The roadway has four 12-foot lanes, 12-foot outside shoulders, and 8-foot inside shoulders.