PITTSBURGH — An Allegheny County judge ruled Friday that money raised by a drink tax can only be used for the county's transit agency.

County Executive Dan Onorato had wanted to spend a $12 million surplus from the drink tax on road and bridge improvements. Opponents of the tax sued, claiming it's is strictly for mass transit.

But Judge Judith Olson agreed with opponents in an injunction.

Olson says the state law designating the money for transit is clear and unambiguous.

The county says it will appeal.

The controversial tax has been reduced from 10 to 7 percent because it generated far more than expected.