Governor Deval Patrick announced today he is vetoing the state legislature’s $800 million transportation finance bill.

“This good bill is not good enough,” Patrick said in a statement.

Patrick had promised the veto after the House and Senate ignored the governor’s suggested changes to the bill that would have increased gas taxes to make up for lost transportation revenue if some tolls are eliminated in 2017.

Advertisement - Continue Reading Below

But votes in the state legislature this week suggest that there is enough support for the bill to override the veto.

The bill, which has been discussed on Beacon Hill since April, raises taxes on gas, cigarettes, and computer software services to fund the state’s beleaguered transportation system and prevent fare increases and service cuts on the T.