Travel on eastbound Interstate 84 near Warrendale will be reduced to one lane starting Tuesday as crews work to replace the aging eastbound bridge over McCord Creek.  The Oregon Department of Transportation says replacing the bridge will eliminate a dip in the road and increase safety, earthquake resilience and the lifespan of the highway.  Over the summer, crews prepared the work site under the bridge and are now beginning the first visible work for interstate travelers.  Travelers on I-84 can expect around-the-clock single lane and shoulder closures on I-84 eastbound at McCord Creek for the next few weeks.  Visit tripcheck.com or call 5-1-1 for traffic alerts.