Kiewit Infrastructure West Co. beat out six other bidders to win a $127-million design-build contract to construct Portland, Ore.’s first crossing of the Willamette River in more than 37 years. The 1,720-ft cable-stayed bridge with a 780-ft main span will carry only light rail, cyclists and pedestrians. The bridge is part of the $1.5-billion, 7.3-mile Orange Line project from Portland to neighboring Milwaukie, scheduled to open in 2015.