The King County Council’s Mobility and Environment Committee is expected to vote Tuesday afternoon on final approval for the alignment of RapidRide G on Madison connecting downtown to Madison Valley through First Hill and Capitol Hill.

The vote will make official the county’s RapidRide program for the planned “bus rapid transit” project expected to begin construction in mid to late 2020 and create a new east-west Metro route along Madison between 1st Ave and Martin Luther King Jr. Way.

CHS reported on the project this summer as it moved into the “90%” design phase and decisions were being finalized on features and changes along the $120 million, 2.3 mile, 10-station route including what planners hope are improved crossings for pedestrians and the major decision to focus on a new diesel-hybrid bus fleet for the line.

Pending approval of federal funding that will cover about half of the costs, the start of construction is slated to start next year with service starting late in 2022.