CYPRESS, Texas - A tanker truck overturned on Highway 290, blocking all outbound mainlanes near Mueschke overnight.

The accident happened around 9:15 p.m. Tuesday after the tanker was involved in a crash with a pickup truck. No injuries were reported, but the resulting hazmat scene forced officials to block all outbound mainlanes for several hours.

Michael Morrow, 46, the driver of the pickup truck, was arrested and charged with a DWI.

Officials with the Cy-Fair Volunteer Fire Department said the tanker truck was carrying a full load of Aluminum Sulfide, which is a corrosive chemical that is dangerous to inhale.

The truck's tank ruptured and liquid chemical spilled onto the freeway. Two Harris County Pct. 4 deputies were transported to the hospital after they reported feeling dizzy.

For a short time after the crash, people within a half-mile radius of the area were urged to shelter-in-place.

Outbound traffic was slow as it was forced to the frontage road. Inbound traffic was delayed slightly by rubbernecking.

Houston TranStar reported the freeway finally reopened shortly after 12:30 p.m. Wednesday.

Click here to view a map of Houston traffic conditions.

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