I-610 EB at North Fwy reopened after 18-wheeler spills unknown chemical, officials say

HARRIS COUNTY, Texas (KTRK) -- An 18-wheeler spilling an unknown chemical caused traffic backups near the North Loop Wednesday afternoon.

Harris County Sheriff Ed Gonzalez said the incident, possibly involving methane gas, shut down I-610 North Loop eastbound at I-45 North Freeway. The incident has since cleared as of 3:35 p.m.

The Houston Fire Department said the name of the chemical in the spill has not been confirmed. It's unclear at this point what may have led to the incident.

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