CalTrans, as usual, wants to add lanes to the 101. In the process, they need to demolish the current bridge. But they are happy to build a new, better (wider, so hopefully more bike-friendly) one.
This would be pretty much a non-issue except that a group of (brazenly racist) NIMBY's from the more affluent neighborhood west of the 101 petitioned the Menlo Park city council to not replace the bridge, since it provides access for criminals (though nobody can cite an actual crime committed by a user of the bridge) and brings down property values. The council sensibly rejected this. Now another group from the same neighborhood, apparently ones who don't keep up on local news quite so well, have suddenly heard about the project and making the same request.
The bridge is well used, among others by students of Menlo/Atherton High School who happen to live on the unfashionable east side of Menlo Park. Members of this community are understandable annoyed at both the injury of losing pedestrian access to the rest of the city, and the insult of being classified as undesirables who should be kept out, and have started a Save Our Bridge petition.
The bridge is a useful link for making bike trips along the Baylands, and if you do or think you might use it for that reason, I urge you to sign this petition (people who live or work around (not necesarily in) Menlo Park are especially encouraged to).