A plan for a $1.7 billion stadium for the San Diego Chargers and Oakland Raiders in Carson, Calif., is expected to go to a public vote after a petition seeking to place it on the ballot was completed Saturday.

Supporters accumulated more than 14,000 signatures — about twice as many as they needed — in just eight days.

“The signature-gathering effort, which moved forward at an unusually rapid pace, revealed an extremely high level of support for the stadium project in Carson,” said Mark Fabiani, who leads the Chargers’ stadium effort.

The Chargers and Raiders announced in February that they are teaming up to propose a shared stadium in Carson, near Los Angeles.

The teams continue to seek publicly funded stadiums in their current cities; but, as a backup plan, they are considering building a privately funded stadium in Carson.

On Monday, the Carson City Council is expected to set up analyses of the stadium proposal — a prerequisite for approving the plan.

Meanwhile, the Chargers’ purchase of the 168-acre stadium site is expected to close at the end of the month.

In January, St. Louis Rams owner Stan Kroenke announced that he planned to build an 80,000-seat stadium in Inglewood, Calif., at the former Hollywood Park site. He garnered more than 22,000 signatures for a ballot initiative, and Inglewood’s City Council unanimously approved the initiative.

The Los Angeles area last had an NFL team in the 1994 season, after which the Rams moved to St. Louis and the Raiders moved back to their original home in Oakland.