Five-Vehicle Crash on Tomball Parkway Leaves Two Trapped, Hospitalized

A northbound vehicle crossed into southbound lanes on Tomball Parkway in northwest Harris County just before 6 a.m. on March 18, setting off a chain-reaction crash that mangled five vehicles, trapped two people inside their cars, and brought morning commuter traffic to a standstill for more than two hours.

Mark Herman with the Harris County Precinct 4 Deputies Office said the crash occurred at Tomball Parkway (FM 2978) near North Gessner Road around 6 a.m. Houston TranStar, which logged the incident just before 6 a.m., placed the collision in the southbound lanes at SH-249 near Mills and Greens Road, a slightly different cross-street anchor than the one cited by Precinct 4 deputies.

Emergency crews worked for hours to free the two people who were trapped inside their vehicles. Both were transported to the hospital and are expected to survive. According to deputies, a vehicle traveling northbound crossed into the southbound lanes, which led to a chain-reaction crash. Two vehicles were significantly damaged.

The Harris County Precinct 4 Constable's Office said up to five vehicles were involved in the crash, with two individuals reportedly trapped. FOX 26 Houston, citing the constable's office and Houston TranStar, reported "at least five vehicles" in its initial coverage. Multiple lanes were closed as first responders worked the scene, and ABC13's aerial unit, SkyEye, captured the heavy backups stretching along the highway during the morning rush.

The reopening timeline drew slightly different accounts from two official sources. Around 8 a.m., deputies said all lanes on Tomball Parkway reopened and traffic resumed as normal. Houston TranStar, however, reported the crash was not fully cleared until approximately 8:30 a.m., meaning the stretch of Hwy 249 was disrupted for at least two and a half hours during one of the week's heaviest commuting windows.

The preliminary cause, a wrong-way vehicle triggering a multi-car pileup in the southbound corridor, remains an account attributed to Precinct 4 deputies. No charges or citations had been publicly reported as of the initial coverage, and the Harris County Precinct 4 Deputies Office had not released a formal crash report with confirmed contributing factors.