Adelaide Airport in Australia has set aside A$165m ($123m) to expand its main terminal to upgrade international arrivals and departures facilities.

The expansion is also aimed at creating more retail and dining space for both domestic and international passengers.

Adelaide Airport has selected builder Watpac for the renovation and construction work, which is due to begin within the next two weeks. The project is scheduled to be completed by 2021.

Adelaide Airport managing director Mark Young said that the expansion of the terminal will ensure the airport provides the highest level of customer experience for all travellers well into the future.

Young added: “Our aim is to provide a seamless, connected experience from the time you drive into the airport until you board your aircraft and vice versa.

“Retail and dining space is expected to increase by more than 80% across domestic and international areas.”

“Since we opened the existing terminal in 2005, our overall passenger numbers have increased by close to 50%. Our international passenger numbers alone have almost tripled over the same period.”

The workforce on this project is expected to reach 200 at the peak of construction.

Upgrades aimed for international travellers will include a longer baggage belt, more space for processing emigration and immigration, expanded security screening area, spacious duty-free shops and additional dining and retail options.

Retail and dining space is expected to increase by more than 80% across domestic and international areas.

Gate 18 will be transformed into a permanent international gate and will be the focus of the improved retail and boarding facilities.

However, other international gates will continue to use Adelaide Airport’s swing gate system to facilitate both international and domestic operations.

Other improvements include a new common-user premium international lounge, new VIP facilities for international arrivals and departures, relocation of the Virgin Australia Lounge, and expansion of office space for terminal tenants, including airlines and regulatory agencies.