At an estimated cost of $57.6 million the building has been touted as the new architectural centrepiece of the city's downtown core.
The 129,00 square foot facility features a larger collection of books than the building it is replacing, as well as meeting and study rooms, technology areas for computers, cafes and a 300-seat auditorium.
Halifax Mayor Mike Savage calls the building, which features a cantilevered rectangular glass box on the top, a "powerful and positive statement" about the city's aspirations.
Danish architectural firm Schmidt Hammer Lassen designed the building with Halifax partners Fowler Bauld & Mitchell.
The federal government is contributing up to $18.3 million and the Nova Scotia government $13 million towards the cost of the project, with the remainder being funded through the municipality and a public funding campaign.