The Senate Appropriations Committee approved a transportation funding bill Friday containing $10 million for a proposed light-rail commuter train system in Salt Lake County.

The appropriations bill, for fiscal 1989, now goes to the full Senate.

If approved by both houses of Congress and signed by the president, the light-rail money would be used by the Utah Transit Authority and the Wasatch Front Regional Council to purchase portions of the Union Pacific Railroad Co. right of way along I-15 in Salt Lake County.

Congress appropriated $3.6 million this year for preliminary engineering studies on the light-rail system, between downtown Salt Lake City and 10600th South in Sandy.

A 1984 study projected traffic volumes into Salt Lake City would increase by 50 percent during the next 15 years, resulting in extensive congestion if improvements are not made to the interstate and mass transit system.