AUSTIN, Texas -

The Texas House has failed to approve a constitutional amendment to boost funding for roads and bridges possibly triggering a third special session.

The House adjourned Monday and with plans to return Tuesday, the last day of the second special session. Gov. Rick Perry has promised to call a third special session if the package to boost spending on roads and bridges by more than $840 million a year did not pass.

A transportation package consisting of a proposed constitutional amendment and a law to make it work came up for a vote Monday.

Lawmakers in the House failed to achieve the two-thirds majority needed to approve a constitutional amendment, while the Senate passed only the enabling law. The measures could pass on Tuesday if supporters rally the votes.