Last week was the warm-up, as the main construction at the Highway 16 interchange with Burnham Drive and Borgen Boulevard begins on Monday.
Some work was done last week to get the area ready for the $6.4 million project. On Monday, machinery will be brought in to start on the 20-foot retaining wall on the south side of the interchange.
According to The Peninsula Gateway, the project should take about a year to complete. While no full closures will be in effect, Gig Harbor has advised drivers to find alternate routes.
The project will expand the off-ramps to two lanes, adding a lane from the roundabout at the west Burnham Drive roundabout, and adding slip lanes.