Local dignitaries, transportation officials and bike and trail advocates/enthusiasts will participate in a ribbon-cutting ceremony for the new path will be held near the bridge's toll plaza at 10 a.m. Saturday.

Among the groups participating: Bike East Bay, which is sponsoring a ride to the event from the Richmond BART station. Cyclists will begin to gather there at 9 a.m. and roll out to the bridge at 9:30.

The group has put together an excellent guide on getting to the new bike path, and it has posted a list of the many Saturday morning group rides planned to celebrate the path's opening.

The walking and cycling path is 10 feet wide — it will probably seem a little crowded at points on opening weekend — and is separated from upper-deck motor traffic by a 42-inch-high movable barrier similar to the one installed on the Golden Gate Bridge. That will allow the barrier to be shifted to the right when Caltrans needs to do maintenance. (More on the movable barrier in the rather cool MTC video below.)





The new path, which is officially a four-year pilot project, was financed with funds from the Bay Area Toll Authority. It's part of a project under which a third lane for motor vehicle traffic was restored last year to the Richmond-San Rafael Bridge's lower, eastbound deck.

The total cost of the project: $74 million, including $36 million for restoring the motor vehicle lane and $20 million for the cyclist/pedestrian lane. Caltrans, the Contra Costa Transportation Authority and the Transportation Authority of Marin partnered with BATA on the project.