State Highway Patrol officers intercepted a driver travelling at 116 km/h on the McIvor Highway at Longlea yesterday evening.
The 43-year-old woman underwent a breath test and allegedly returned a reading of 0.142.
Her licence was immediately suspended and her car was impounded for one month at a cost of $1200.
She will be charged on summons for exceeding the speed limit and drink driving.
This impound forms part of Operation Nexus, a five-day focus on keeping our community safe on the roads during the Easter long weekend.
The state-wide operation aims to reduce road trauma, including the number of lives lost and injuries on our roads.
During this time motorists can expect to be breath tested and drug tested, have their vehicles scanned and be checked for speeding.
The operation involves all available personnel including local road policing units, general duties, other operational policing units and centralised resources from Road Policing Command.
The operation started at 12.01am on Thursday 1 April and concludes at 11.59pm on Monday 5 April