The first phase of reconstruction is underway at the new Duluth International Airport terminal in the US.

The $10m programme includes site grading, infrastructure, utilities, service roads, parking areas, a new access roadway and finishing the terminal building design.

Airport executive director Brian Ryks said $11.7m more is required for phase two in 2011 while a total of $65m will be required to complete the project by late 2012.

The airport is being reconstructed to accommodate the increase in passenger traffic and will be equipped with new security requirements and other improvements.

The airport will remain operational for the entire construction period.