TORONTO - The federal government is paving the way for a pedestrian tunnel to Toronto's island airport.

Prime Minister Stephen Harper says regulatory changes have been made to allow the tunnel project at Billy Bishop airport.

The 240-metre tunnel will compliment the current ferry service -- said to be one of the world's shortest regular ferry routes.

Some 1.5 million people use the island airport each year.

Some critics worry such a link will mean more traffic and more flights.

The project is expected to take two years to complete.

"The construction of the pedestrian tunnel will create jobs," Harper said at a groundbreaking ceremony Friday.

"(It will) help manage passenger flows to and from the airport."