Emergency services descended on the crash site after receiving reports of a truck rollover at Holbrook just before noon on Monday.

Police, Fire and Rescue NSW crews and teams of paramedics, including a rescue helicopter, were tasked to the highway between Holbrook-Wagga Road and Albury Street.

Upon arrival they found the truck had come to rest on its side in the centre median strip, between the northbound and southbound lanes of the Hume.

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The driver, a man believed to be aged in his 20s, was trapped inside the truck.

A spokesperson for NSW Ambulance confirmed the man was being treated for an arm injury, trapped by compression, and several crews were on site.

He was eventually freed and airlifted to hospital.

Traffic conditions slowed on the highway while emergency services worked to free the man, clear the debris and salvage the truck, which was carrying a load of bark chips.

Single lanes were closed in both directions and were yet to lift by 3pm.

"The truck had crashed heading northbound," FRNSW's Superintendent Stewart Alexander said.

"There still remains a southbound and northbound lane closed while a salvage company is working to right that truck and remove it.

"FRNSW will remain on scene as there is a small diesel spill and we will clean that up once the truck is righted and out of the way. It was excellent work by SES, RFS, Ambulance and police and of course FRNSW."

A driver is trapped and lane closures are in place on the Hume Highway after a truck crashed near Holbrook.

It is understood the crash occurred just before 12pm, just west of the township between Holbrook-Wagga Road and Albury Street.

The truck has come to rest in the centre median strip, causing a single lane in both directions to close.

NSW Ambulance paramedics and a rescue helicopter have been called in, and Fire and Rescue NSW's Superintendent Stewart Alexander confirmed fire crews were among the emergency services attending.

"The driver is trapped and emergency services are on scene," he said.

"The load is reportedly bark chips."

Several teams of paramedics have arrived on the scene, where they are treating a man believed to be aged in his 20s.

"(Paramedics) are treating a male with an arm injury, trapped by compression," a spokesperson for NSW Ambulance said.

Traffic has slowed in both the northbound and southbound lanes, a spokesperson for the NSW Transport Management Centre said.

"There is some slow traffic in both directions," he said.

"[The truck] is on the centre median, so both ways can see it."

A number of other trucks have stopped and are assisting, he said.

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