Crews are at work building the planted concrete islands that will separate the Fell and Oak bike lanes from motor traffic. As we reported earlier this month, the long-delayed project is now supposed to wrap by April. The new construction is a sign that city agencies may make good on that.

This week crews carved up the asphalt at several spots along the Oak Street bike lane’s buffer zone, from Baker to Scott Streets, to prepare for the installation of the islands. The construction barriers provide a preview of the better sense of protection along the bike lane once the islands are complete.

According to Department of Public Works spokesperson Dadisi Najib, DPW and the SF Public Utilities Commission expect to finish the islands on Oak by March 20, and work on Fell will be completed between March 2 and April 30.

The protective bike lane islands are the final component of the safety measures going in on Fell and Oak. Pedestrian bulb-outs with rain gardens have been under construction for months.

Hopefully, the islands will also finally send the message to drivers to stop parking in the bike lanes, and the ranks of daily bike commuters who use them will swell from the current level of roughly 1,800.