The left lanes of eastbound and westbound Interstate 84 will be closed in the western part of the Gorge over the next three weeks as the Oregon Department Of Transportation begins a project to replace median barriers. Closure of the westbound and eastbound left lanes on an 18 mile stretch of I-84 between Cascade Locks and Hood River is scheduled to begin this morning. The lanes will re-open by 6 p.m. Thursday. The schedule will repeat Monday through Thursday over the next two weeks, with at least one lane open at all times. Similar closures will be needed after Labor Day to finish the project, which is scheduled for completion by November. The work is being carried out in advance of the 2016 paving project on I-84 from Cascade Locks to Hood River.