S.497: A bill to repeal a prohibition on the use of certain funds for tunneling in certain areas with respect to the Los Angeles to San Fernando Valley Metro Rail project, California.

Amends the Department of Transportation and Related Agencies Appropriations Act, 1986 to repeal the prohibition against use of certain funds for any segment of the downtown Los Angeles to San Fernando Valley Metro Rail project unless the Southern California Rapid Transit District notifies the Urban Mass Transportation Administration that no part of the Metro Rail project will tunnel through any zone designated as a potential risk zone or high potential risk zone for methane gas.