Employment opportunities are available with sub-contractors already operating on £5.2million project, while companies seeking to get involved as a sub-contractor can also come along to hear more.
The open day will be hosted at the Galashiels TI site office of tier one contractor Morrison Construction, with attendees free to come along at any time between 8am and 4.30pm.
Opportunities include working on a range of internal trades as well as cladding and external works packages.
Those who cannot make the open day can sign up after Friday 6 February to find out more about work opportunities by visiting: www.hubsoutheastscotland.co.uk/supply-chain/opportunities-for-smes.
Scottish Borders Council's Executive Member for Economic Development, Councillor Stuart Bell, said: "Galashiels Transport Interchange is progressing well, with the building now taking shape ahead of its summer opening. It will play a key role in the Council's long term aim to provide better connections between all means of sustainable transport.
"Despite the project heading into its final stages, there are still opportunities for employment.
"The Council remains committed to supporting communities across the region throughout the construction and delivery of the Transport Interchange, and would encourage any local people to attend the open day and find out more about the project."
Paul McGirk, Chief Executive of Hub South East Scotland Ltd, SBC's Development Partner delivering the project, added: "One of the key aims of the Hub initiative is to ensure the delivery of community benefits for local people. This includes promoting opportunities for employment within our supply chain and to this end we are keen to attract as many people as possible to this event in the Borders.
"We would encourage local people in the area to come along and find out more."
Derek Scotland, Project Director at Morrison Construction, said: "An event such as this has an incredibly important role to play in giving local businesses involved with the construction industry an insight into future opportunities within the area.
"Our role is much wider than simply delivering projects. Morrison Construction recognise the need to support and work with the local supply chain at each stage of a development and want local companies to benefit from local opportunities wherever possible and support the growth of the local area.
"This event will do exactly that - helping businesses to build crucial relationships and win contracts, which Morrison Construction will encourage and facilitate.
"This event will be attended by key decision makers from within the organisation and will therefore be a good opportunity for the supply chain to meet senior members of the team."