The Detroit News Activity at the Ambassador Bridge linking Detroit and Windsor accounts for most of the growth in truck traffic at Michigan-Canadian borders.
Trade agreement means more trucks, more miles traveled.
By Kenneth Cole Detroit News Washington Bureau raffic on the Ambassador Bridge seemed heavy enough five years ago when 1.8 million commercial trucks crossed the two-mile span. Now, America's busiest border crossing is busier than ever, carrying 2.7 million trucks last year. The North American Free Trade Agreement, which relaxed border restrictions in the United States, Canada and Mexico after its adoption in 1994. And a booming economy has heightened demand for trucks that haul 90 percent of the 1.3 million tons of freight moved annually in the state. Federal and state authorities note that truck traffic is way up at all four U.S.-Canada border crossings in Michigan.