Construction will begin as soon as Monday, July 7, 2014 on a project to replace pavement and guardrail on a 4.5 mile stretch of OR 58 (Willamette Hwy.) between Pleasant Hill and Dexter (MP 6.5-11).  The pavement along this stretch of highway is badly worn. A contractor for ODOT will grind-out the old pavement and replace it with new asphalt.  In addition, a half-mile segment of roadway near the Dexter end of the project will be excavated and a new rock subgrade and aggregate road base will be constructed before new asphalt is applied.  During construction, motorists, bicyclists and pedestrians should anticipate lane closures and travel controlled by flaggers. Some construction will be done during daytime hours; some construction will occur at night. Delays of 20 minutes should be expected through the active work zone.  From milepost 10.3 to 10.7, where the subgrade will be reconstructed, there will be 24 hour flagging for as long as 3 to 4 weeks. That segment is expected to be constructed in the early days of the project.  The project is scheduled for completion by the end of October.  Wildish Construction Company of Eugene was awarded the low-bid contract of $2.6 million.