At 9:23 am Saturday, the East Contra Costa Fire Protection District responded to a report of a vegetation fire along E. Cypress Road in Oakley.
Firefighters and Oakley police shut down the roadway as crews worked to limit the fire.
The fire district said the wind aided them as it was pushing the blaze towards E. Cypress and not further into the field.
The roadway on E. Cypress Road between Sellers and Machado Lane was blocked. Those going to and from Bethel Island were being advised to take Main Stree to Delta Road and then to Sellers before getting back onto E. Cypress Road.
The roadway has now been re-opened and the cause of the fire has not yet been identified.