The ferry boats Solano and Contra Costa were removed from service when the nearby Martinez railroad bridge was completed in 1930.

From 1913 until 1954 the Sacramento Northern Railway, an electrified interurban line, crossed Suisun Bay with the Ramon, a distillate-powered train ferry.

Kinder Morgan pleaded guilty to operating a corroded pipeline (and cited for failing to notify authorities quickly after the spill was discovered) and paid three million dollars in penalties and restitution.

The USNS Glomar Explorer was anchored here after recovering parts of a sunken Soviet submarine in the mid-1970s (see Project Azorian).

In 2010, plans were announced to remove the oldest remaining parts of the Suisun Bay mothball fleet in stages.