HOUSTON -- Toxicology tests indicate that Grammy-winning Tejano singer Emilio Navaira was intoxicated when the tour bus he was driving crashed into a collection of freeway barrels in suburban Houston in March, authorities said.

Navaira, known to has fans simply as Emilio, was behind the wheel of his tour bus March 23 when it slammed into the freeway barrels, throwing him through the windshield. Doctors had to perform two brain surgeries and repaired a potentially fatal aneurysm on Navaira's right lung.

The singer is expected to have trouble with his memory and concentration as he recovers. But his doctors have said Navaira has been able to stand, eat, sign his name and converse with his family.

Emilio was moved to Memorial Hermann|TIRR, a hospital that specializes in helping people with disabling injuries or illnesses, on April 23. Football player Kevin Everett was recently treated at the hospital after he was paralyzed from the neck down during a game.

Emilio has released more than a dozen albums with his band. He won a Grammy for best Tejano album in 2003 with "Acuerdate."