<human>:  When did the Canadian government decide to build the Trans-Canada Highway?
<bot>: The government decided to build the Trans-Canada Highway in 1932. The highway was built as a project of the National Highways Act, and was the first major highway project in Canada. It was built to link the western provinces to the eastern provinces. It is the longest highway in Canada, stretching 1,600 km (990 mi) from St. John, New Brunswick to Victoria, British Columbia.