Workers smooth concrete for the retaining wall footing northof Coal Creek Parkway.Workers pour concrete for a retaining wall footing along northbound I-405just north of Coal Creek Parkway. The retaining wall will allow for a new northbound lane, east of existing travel lanes.Crews install panels for a new wall along the ramp from westbound I-90 to southbound I-405. The wall will support the south abutment of the new southbound I-405 bridge over I-90.Below, temporary shoring piles will support a temporary retaining wall while crews build a new southbound bridge over I-90.