Officer William Lacy, 46, was stopped by a DPS trooper on State Loop 494 in Montgomery County around 11 p.m. Saturday.
The DPS trooper stopped the officer driving a 2016 Toyota pickup for traffic violations and determined he was intoxicated.
Lacy was transported to the Montgomery County jail after a blood specimen was obtained.
HPD public information officer John Cannon said that Lacy is suspended from the Houston Police Department pending the investigation.