Alternate routes served as primary routes for commuters throughout the morning on Tuesday following an accident that left an 18-wheeler tanker truck overturned.
The heavy truck, which was carrying approximately 6,000 gallons of methanol, overturned on the 610 West Loop northbound lanes near the Southwest Freeway (U.S. Highway 59) exit ramp before 5:45 a.m. Tuesday.
A Houston Fire Department district chief told FOX 26 News that the tank had three leaks, two of which were stopped by 9 a.m. and one that was leaking a minimal amount of methanol, which is a highly-combustible chemical.
Firefighters dug a dike in the median to contain the spilled methanol along the freeway.
The northbound and southbound lanes of the 610 West Loop were closed, which caused delays of an hour or more for many commuters on Tuesday.
The driver of the 18-wheeler truck, who was not injured, told firefighters that he misjudged the turn and lost control of the vehicle. The tank was lodged over the freeway retaining wall.
Crews are projected to clear the accident scene by 2 p.m. Tuesday, according to a statement released by HFD.