I so completely disagree with you. I personally have almost been hit by a bicycle on more than one occasion. It is the equivalent of a pedestrian sidewalk with no delineated area vehicles (which is what a bicycle is). Rarely do bicyclists walk on the bridge, and they don't call out when they are coming creating real risk to others. I'm sure pedestrians have been hit before, and will be again. It's just selfish not to think of the safety of others.

I don’t think the city of Alameda owns Park Street bridge so you will have to contact Alameda County Public Works. https://www.acpwa.org/

This issue was recategorized from Street Safety Concern to Pedestrian or Bicycle Access Issues.

Itinalaga ni Alameda, CA ang isyung ito kay Transportation Planning-Wheeler

The City can work with the Alameda County Public Works Agency, but as a respondent noted, they, and not the City, own and maintain the bridge. More info and contacts here:
https://www.alamedaca.gov/RESIDENTS/Information-for-Residents/Estuary-Bridges