That is one large expansion joint.  Visible within are the male/female connectors that will keep...

That is one large expansion joint. Visible within are the male/female connectors that will keep the bridge connected during an earthquake. These are designed to be the weak link that will fail in a big quake, but can be easily replaced.

Location
San FranciscoSan Francisco BayOakland Bay Bridge
Photographer
Catherine Hovell
Date taken