California-based NFL teams the San Diego Chargers and the Oakland Raiders unveiled details on plans for a shared stadium in Los Angeles County at a press conference Friday. The partnership dubbed “Carson2gether” proposed a $1.7 billion stadium to house the two football teams in Carson if both fail to get new stadium deals in their current hometowns, the teams said in a joint statement Thursday night.

"We are pursuing this stadium option in Carson for one straightforward reason," the statement said. "If we cannot find a permanent solution in our home markets, we have no alternative but to preserve other options to guarantee the future economic viability of our franchises."

Carson, located 15 miles south of downtown Los Angeles, is home to the StubHub Center, where Major League Soccer's Los Angeles Galaxy plays.

The Raiders and Chargers will continue looking for permanent stadium solutions in their hometowns as well as in Carson, “in the event that our efforts in our local markets fail,” the statement said. The teams are both in year-to-year leases and have struggled to obtain public funding to build stadiums.

The Chargers have long sought to replace the nearly 50-year-old Qualcomm Stadium and talks with San Diego City Hall have become quarrelsome. The Raiders’ Oakland Coliseum is even older and has had sewage and electrical problems. It is now the only stadium in the United States that houses both an NFL team and a Major League Baseball team, the Oakland Athletics. The Raiders also want to build a stadium on the site of the current one, but talks with the city have stalled, Southern California Public Radio reported.

The proposed shared stadium joins at least two other stadium plans in an effort to return the National Football League to Los Angeles. St. Louis Rams owner Stan Kroenke plans to build a stadium in Inglewood, 10 miles from Carson. A planned stadium known as Farmers Field in downtown Los Angeles also is a possible site for an NFL team, according to the Los Angeles Times.

Southern California was the home of the Rams from 1946 to 1994. The Raiders moved from Oakland to Los Angeles in 1982, then returned to Oakland in 1995.

The league warned teams earlier this month that it will be make any final decision about a move to Los Angeles and established a committee of owners to review the stadium options, the Los Angeles Times reported. The Chargers and the Raiders said in the joint statement they will respect the rules and procedures set forth by the league.

The Chargers and Raiders wouldn’t be the only sports teams to share the same facility in Southern California. The NBA's Lakers and Clippers currently share the Staples Center in downtown Los Angles.