On Tuesday afternoon, construction crews will divert traffic to a new on-ramp to Interstate 680. Work will take place between 7 a.m. to 5 p.m., according to the San Francisco Public Utilities Commission.
The work is part of a SFPUC project to replace and retrofit aging pipelines in the area.
Drivers using the westbound Mission to northbound I-680 on-ramp will be directed onto a newly-laid temporary ramp at the shoulder of the current ramp. The diversion of traffic from the current on-ramp onto the new on-ramp will not require any traffic closures.
The temporary ramp will allow workers to access lengths of water pipeline that lay beneath the busy highway interchange. Preparations for the new ramp have already begun and paving the new ramp was expected to begin Monday.