A vital connection to one of the Delta’s inhabited islands will be out of service for several weeks beginning this month, Caltrans announced.

The Real McCoy II ferry boat that serves as a link between Rio Vista and Ryer Island along State Route 84 in Solano County, will be out of operation beginning Feb. 7 so that required engine upgrades can be completed. The work is expected to be finished sometime by “late” March, according to Caltrans.

Although Ryer Island, located about 15 miles north of Antioch along Steamboat Slough, is not heavily populated — about 400 people live and work there — travelers who need to reach the island can still do so via a companion ferry, SR-220 J-Mack, which operated “on demand” 24 hours a day. Vehicles can also access Ryer Island via the Miner Slough Bridge, Caltrans officials said.

A load of cars departs the Ryer Island ferry slip aboard the Real McCoy II. (Photo by Glenn Gehlke/Bay City News Foundation)