摘要: |
A major thoroughfare for both local and national traffic with an average daily traffic of 160,000, the bridge's northbound traffic is carried by the lower deck while southbound traffic is carried by the upper deck. The Brent Spence Bridge and its approaches are key elements of the nation's interstate system, connecting to 10 states from as far north as Michigan to as far south as Florida and serving as one of the busiest truck routes in the U.S. Almost 3% of the nation's gross domestic product (GDP) annually crosses the bridge and a significant maritime presence operates under the bridge on the Ohio River. |