The movie "Sneakers" tells us that there are "four bridges in the Bay Area," although this is not quite true - there are four bridges reachable from the San Francisco Peninsula itself, but eight total over water in the wider bay. Two of the eight carry triple-digit interstates. Identify the longer of those two bridges, the first bridge north from the Golden Gate in Marin County and the northernmost of the east-west bay crossings, which carries Interstate 580 across the bay.
RICHMOND-SAN RAFAEL BRIDGE (or JOHN F. MCCARTHY MEMORIAL BRIDGE)