At a hearing last month, Arunas Valacka, 44, from Lithuania, and Andrei Vasilachi, 59, of no fixed address, both admitted dangerous driving and driving while under the influence of alcohol.
They were sentenced to 12 months in prison today (Tuesday, July 28).
Officers stopped the two HGVs driving the wrong way on the A19 near the A689 Hartlepool turn off on Sunday, June 14, around 9pm.
Police say some motorists took evasive action to avoid a collision.
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The incident caused chaos on the A19 and motorists suffered tailbacks lasting more than two hours after the lorries drove southbound on the northbound carriageway at around 9pm.
Acting Inspector Steve Clyburn, from the Cleveland and Durham Specialist Operations Unit, said: “These two men put countless lives at risk on the evening that they got behind the wheel after consuming alcohol.
"Not only did they drive whilst drunk, because of this they drove along the A19 into oncoming traffic. A number of drivers had to take evasive action to avoid a collision, which could have easily resulted in serious injury or worse.
“I welcome the sentences given to these drivers. They now have the time to reflect on their actions whilst behind bars, it is only sheer luck which has saved them, and other innocent road users, from potentially losing their lives.”