TWIN FALLS, Idaho -

Eastbound lanes on a section of the main travel route through south-central Idaho are closed Thursday following a collision involving a tractor-trailer carrying hazardous materials.

Authorities say eastbound lanes between Twin Falls and Burley are closed indefinitely while a hazardous material team cleans up chemicals from the crash Wednesday evening.

Jerome County Sheriff Doug McFall tells The Times-News that a tanker carrying 46,000 pounds of sodium aluminate solution blew a tire and was rear-ended by a another tractor-trailer hauling onions.

McFall says the tanker appeared not to have been compromised after tumbling off the road but a subsequent check found a leak.

The truck hauling onions caught fire and the driver was flown to a hospital to be treated for burns.

Police say area residents aren't in danger.