you are looking live at the dunbar ton bridge right now. no traffic. it is closed for the next three days. i m carolyn johnson. i m dan ashley. the barton bridge is closed for the entire labor day weekend. these are the last cars crossing the dunbar ton bridge between menlo park and fremont about an hour ago. about 30,000 vehicles a day cross it on any given weekend, so it is highly used. it is shutdown for seismic retrofit work, and it is not scheduled to reopen until the weekend 5:00 a.m. tuesday morning. this is a live shot of the eerily quiet bridge. we don t see it like this. cal trans is lifting it five inches to install a huge new pair of steel bearings to give it more flexibility when the next big crate hits. it is two disks that are put together and slide over each other. it gives this bridge about up to four feet of movement in any direction. alternate routes include the bay bridge and the san mateo bridge and the south bay 101, 880 loop. and fremont street