A long-planned high-speed rail system that would connect Southern California with Las Vegas got a boost last week when building trade unions in two states announced a memorandum of understanding with the project’s developer.

The 218-mile system is still in the development stages, but the officials from the California State Building and Construction Trades Council, Southern Nevada Building Trades Union and developer Brightline West said the agreement is a positive step in moving forward with the project.

“We continue to build a powerful coalition around Brightline West and our vision for high-speed rail in America,” Brightline Holdings CEO Mike Reininger said in a statement.

Brightline West says it will spend $10 billion to connect Las Vegas and Southern California through the Interstate 15 right-of-way, with trains capable of speeds up to 200 miles per hour. There will be a California-based station in Rancho Cucamonga that will connect to another station in Las Vegas, tentatively set for Las Vegas Boulevard, roughly 2 miles south of Mandalay Bay.

Additional California stations will be built in Hesperia and Apple Valley.

The system could alleviate traffic along I-15 and provide another means for Southern Californians to visit Las Vegas.

The agreement is expected to create nearly 10,000 construction jobs in California and Nevada. The Southern Nevada Building Trades Union is an alliance of 14 labor unions across the region.