Columns will support a southbound I-405 bridge over I-90 A crane lifts the last of six new girders for the widening of the bridge over Coal Creek Parkway. Crews installed the girders in four hours overnight Feb. 4-5.New concrete girders stretch across Coal Creek Parkway for a new section of bridge that will ultimately carry another northbound lane on I-405. Crews work on a retaining wall footing between northbound I-405 and the ramp from Coal Creek Parkway to the freeway.