A backhoe operator works alongside I-405 north of 112th Avenue Southeast, where crews will build a new northbound lane.Workers dig a trench along the on-ramp of 112th Avenue SE to northbound I-405. Once the trench is complete, crews will install wiring in the trench for the new ramp meter.Before drilling shafts for the new columns on an expansion of the bridge over I-90, crews must build a pad for the drill to sit on. Above, a bulldozer spreads dirt for the pad.Workers discuss the 2.4 acre Kelsey Creek wetland restoration site, where crews recently brought in logs to help improve habitat. The wetland restoration will provide environmental mitigation for project along the I-405 corridor.