Paramedics with Huntsville Emergency Medical Services Inc. (HEMSI) responded to a wreck that happened along Research Park Boulevard, near the intersection of Blake Bottom Road.
Huntsville Police closed down the southbound lanes of Research Park Boulevard while they worked to clear the scene.
HEMSI Spokesman Don Webster said that a man in his late 20s received serious internal injuries as a result of the wreck. He was taken to Huntsville Hospital for treatment.
Webster said the man crashed into the guardrail along Research Park Boulevard when he was thrown from his vehicle.