US President Barack Obama has unveiled a $50bn infrastructure spending package aimed at reviving the faltering American economy and cutting the country's mounting unemployment.
Obama says the six-year investment will revamp ageing roads, lay and maintain railways and upgrade airport runways.
While the programme will not create jobs immediately, the President says the package will bring a significant number of people back to the workforce.
Speaking in Milwaukee on Labor Day, Obama says no area of the workforce has been hit harder during the recession than the country's construction workers.
"It doesn't do anybody any good when so many hardworking Americans have been idled for months, even years, at a time when there is so much of America that needs rebuilding," Obama says.
"I am announcing a new plan for rebuilding and modernising America's roads and rails and runways for the long term. I want America to have the best infrastructure in the world. We used to have the best infrastructure in the world. We can have it again.
"Over the next six years, we are going to rebuild 150,000 miles of our roads, that's enough to circle the world six times. That's a lot of road. We're going to lay and maintain 4,000 miles of our railways, enough to stretch coast to coast.
"We're going to restore 150 miles of runways. And we're going to advance a next-generation air-traffic control system to reduce travel time and delays for American travelers."
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