Crews paving this weekend means drivers heading northbound on I-405 in Bellevue should plan extra time for their trips and expect delays.

Crews working to widen I-405 in Bellevue will close one lane on northbound I-405 in Bellevue between 112th Avenue Southeast and Coal Creek Parkway through 5 a.m. Monday. A second lane will close nightly for the following two nights:

* Midnight until 8 a.m. Sunday

* 11 p.m. Sunday until 5 a.m. Monday.

The closures are necessary to give crews room to pave the new northbound I-405 lane between 112th Avenue Southeast and Coal Creek Parkway. Crews also will close the following ramps until 5 a.m. Monday:

* The ramp from 112th Ave. S.E. to northbound I-405.

* The ramp from northbound I-405 to Coal Creek Parkway.

If possible, drivers should use I-5 and avoid the area, officials say, otherwise there may be several miles of backups. Drivers who need to use I-405 in Bellevue should slow down, use caution and pay close attention to detour signage while driving in what will be an active construction zone.

This work is part of the I-405, South Bellevue Widening Project. For more information visit www.wsdot.wa.gov/Projects/i405/.