150th Avenue SE Mobility Project

Overall, the project will improve highway access, provide additional roadway capacity and reduce traffic congestion with specific improvements for each portion of the corridor. After the construction of these improvements, travel delays during the peak evening periods are expected to be reduced in half through this section of the 150th Avenue Southeast corridor.

Description

The proposed project will relieve congestion in the 150th Avenue Southeast corridor between Southeast 38th Street and Eastgate Way. The project includes:

• An additional southbound general-purpose travel lane on 150th Avenue Southeast starting north of Southeast Eastgate Way and continuing to Southeast 38th Street.  
• An additional right-turn lane from the eastbound I-90 off-ramp to southbound 150th Avenue Southeast.
• Safety improvements to the right turn pocket on northbound 150th Avenue Southeast.
• An additional left turn pocket and restriping of Southeast 37th Street from 150th Avenue Southeast to the eastbound I-90 on-ramp.
• An additional left-turn pocket (creating two left-turn pockets) on northbound 150th Avenue Southeast at Southeast Eastgate Way with roadway widening on westbound Eastgate Way to receive the second left turn lane traffic.

Benefits

Eastbound I-90 off-ramp: The intended use of the off-ramp is to provide right-turn capacity for vehicles turning onto southbound 150th Avenue Southeast, allowing for improved egress from I-90 to South Bellevue.

Southbound 150th Avenue Southeast: The proposed design will improve traffic flow by adding a southbound through lane on 150th Avenue Southeast starting north of Southeast Eastgate Way and significantly reduce afternoon peak travel delays. The southbound through lane will connect to the right-turn-only lane at the Southeast 38th Street intersection.

Southeast 37th Street: The proposed design will provide additional left-turn capacity on Southeast 37th Street to the eastbound I-90 on-ramp.

Background

The Bellevue Transportation Commission held a meeting on Jan. 12, 2017, where the 150th Avenue Southeast project was discussed, and the public was allowed to provide comments. The project was recommended as part of the Eastgate Transportation Study.