Alberta RCMP tweeted late Monday evening that both north and southbound lanes at the crossing on Highway 4 were blocked by the demonstration and asked motorists to avoid the area.
Trucks and other vehicles began parking on the highway near Coutts on Feb. 5 in solidarity with similar protests in Ottawa and across the country over COVID-19 vaccine mandates for cross-border truck drivers and broader public health measures.
One blockade became two when a second one appeared further up the highway.
The impasse stranded travellers and cross-border truckers for days, compromised millions of dollars in trade and impeded access to basic goods and medical services for area residents.
Last week, protesters agreed to open a single lane in each direction for traffic and so truckers could haul cargo across the border.