A busy downtown intersection will close for over two weeks as crews complete the approach to a new bridge over Interstate 405.

The downtown intersection of Northeast 10th Street and 112th Avenue Northeast, along with one block of 112th, will be off limits from Aug. 1 through Aug. 16.

The new bridge will connect downtown Bellevue with the city’s growing medical district, located just east of I-405 along 116th Avenue Northeast.

Last year, the city extended Northeast 10th Street from 116th Avenue Northeast to the east edge of I-405. The new roadway is expected to ease congestion on Northeast Eighth Street.

During construction, 112th Avenue will be closed between Northeast Eighth and Northeast 10th streets, and no traffic will be allowed through the intersection with 10th Street. Through traffic will be detoured to 110th Avenue Northeast; bike traffic will detour to 108th.

Driveways on 112th Avenue, between Northeast 10th and Northeast 12th streets, will be accessible via the intersection at 112th Avenue Northeast and Northeast 12th Street.

Tenants and residents of properties on 112th Avenue Northeast, between Northeast Eighth and Northeast 10th streets, will have local access from Northeast Eighth Street.

The sidewalk on the west side of 112th, from Eighth to 10th streets, will remain open, while the sidewalk on the east side will close.

Work at the intersection includes removing the asphalt pavement and replacing it with longer-lasting concrete, upgrading traffic signals, adding a right turn lane from northbound 112th Avenue to eastbound 10th Street and building a storm water pond with extensive landscaping.

Future WSDOT plans call for construction of a new “braided ramp” that will provide direct access from the new 10th Street Bridge directly to eastbound SR 520. A separate ramp from Northeast Eighth Street will carry traffic headed northbound on I-405.