EUGENE, Ore. -- Construction shifts into a new phase Friday night on the stretch of I-105 that crosses the Willamette River.
According to the Oregon Department of Transportation both directions of traffic crossing the river will move to the eastbound travel lanes.
This is all part of the project aiming to bring ramps and bridges up to current standards
The highway won't have a second merge west bound, but officials with ODOT say they anticipate backups will not get too bad.
However, they also said the most difficult week will be the first week of March where the southbound delta ramp to I-105 will be closed for eight weeks.
Angela Beers-Seydel with ODOT says the closures are inconvenient but necessary.
"We're getting rid of all those holes that people have seen in the pavement," said Beers-Seydel. "We are working on strengthening the bridge deck, seismic reinforcement, replacing the bridge rails -- all the things we did on the first two parts of the project."
These closures will last until June and reopen in time for the Olympic trials and then close again in August so they can switch their focus to the eastbound lane.