it's in a location to the east of Microsoft's main campus. The area moving east from the campus is very lush with open space and stands of trees. The road in question is heavily traveled every day, one of only two main arteries from the eastern areas where people live to the centers of commerce to the west. the deer bridge is only a part of a larger road improvement package. Here are the coordinates for the location of the overpass 47.698931,-122.030339 I can't easily find a way to make a direct link to google maps, but if you enter those coordinates in the maps search box, it will take you to the right spot.
here's another link to the larger road improvement project.
http://www.redmond-reporter.com/news/216820281.html