Flames recently burned the abandoned wooden railroad trestle just south of the Dumbarton Bridge in the East Bay, near Fremont.
The fire was reported around 5:12 p.m. on Sunday, June 2, and burned around three-quarters of an acre near Dumbarton Point before spreading to the trestle, Battalion Chief Kyle Adams said. The trestle fire appears related to a vegetation fire reported around there at the same time. By 7:30 p.m., it had burned about 100 yards of the rail trestle, according to Adams.
The trestle and the grasslands were hard to reach for firefighters, who had to use four-wheel-drive rigs to access the fire. About 21 Fremont firefighters and a crew from the Alameda County Fire Department helped fight the fire.
While the cause of the fire hasn't been determined, Adams said it was likely human-caused.
The Dumbarton rail bridge hasn't been in service for years, and has been significantly damaged from fire on the Peninsula side as well. Facebook is currently working with the Plenary Group and SamTrans to explore the possibility of renewing the rail line for passenger service.
Kate Bradshaw contributed to this report.