You may have seen the arrival of several girders for the Thornton Overpass project.
These concrete structures provide the primary support for the bridge and are a critical component for the final construction. Each girder weighs a little less than 130,000 lbs - that's almost as heavy as the space shuttle, two bulldozers or eighty-five cows!
Thank you for your patience on the roads as the girders make their way through our city. You can find more information and a live webcam of the project at www.cityofferndale.org/Thornton
Original source can be found here.