SACRAMENTO, Calif. — California lawmakers approved billions of dollars Friday in construction financing for the initial segment of the nation's first dedicated high-speed rail line connecting Los Angeles and San Francisco.

The move marked a major political victory for Democratic Gov. Jerry Brown and the Obama administration. Both have promoted bullet trains as job generators and clean transportation alternatives.

"No economy can grow faster than its transportation network allows," U.S. Transportation Secretary Ray LaHood said in a statement applauding the legislative vote. "With highways between California cities congested and airspace at a premium, Californians desperately need an alternative