The Dumbarton Bridge
is the southernmost of the bridges that span the San Francisco Bay
. It is also the shortest. Its eastern terminus is in Newark
in the San Francisco Bay National Wildlife Refuge and its western terminus is in Menlo Park
. The current bridge is the second bridge in this location and was opened in 1984
. The earlier bridge was opened in January 1927
. Currently there is a toll charge of $22
for cars travelling east to west.