Bellevue drivers going to and from work will notice big changes next week.

Friday Washington State Department of Transportation crews will close northbound Interstate 405 for the weekend. When crews reopen the road Monday morning, drivers headed to Redmond, Seattle and Kirkland will use new ramps to get to I-405 and State Route 520.

“Many drivers travel the same routes day after day and get into a routine. The changes coming Monday are significant,” said Seema Javeri, WSDOT project engineer. “We need drivers to get familiar with the changes this week so it’s not a surprise come Monday.”

New signs in and around Bellevue will direct drivers to SR 520 and I-405 using the new ramps. Drivers going to SR 520 will use Northeast 10th Street. The new ramp will take vehicles directly to east- and westbound SR 520. Eastside drivers will no longer have access to SR 520 from Northeast Eighth Street. Drivers will continue to use Northeast Eighth Street to reach I-405 but will use a new ramp to reach northbound I-405. Northbound I-405 drivers should prepare to exit to SR 520 nearly one-half mile earlier than the current exit point.

Once complete in the summer of 2012, the $107.7 million construction project will reduce existing congestion that can last up to eight hours a day in Bellevue with new braided ramps that separate traffic going to SR 520 and I-405 and an SR 520 bypass lane over 124th Avenue Northeast.

Crews are also replacing the Northeast 12th Street Bridge with a wider structure that includes a bicycle and pedestrian lane and improves traffic circulation in Bellevue.

Closure information

• Northbound I-405 will close from Northeast Eighth Street to SR 520 from 11 p.m. Friday, Sept. 23, to 4 a.m. Monday, Sept. 26.

• Several northbound ramps in Bellevue will close and signed detours will be in place.

• Southbound I-405 will be open to traffic all weekend.

• Bellevue is open for business during the northbound freeway closure. Northbound exit ramps will be open as far north as Northeast Eighth Street.