Rail worker killed after bridge collapses on truck in NSW

A rail worker has died after a bridge collapsed when it was hit by a "cherry picker" truck in New South Wales' Central West.

Emergency services worked for hours to free the trapped 34-year-old, who was a passenger in the truck, but he died at the scene.

The 38-year-old driver of the truck managed to escape the cabin.

READ MORE: Death toll rises to at least nine in Kentucky cargo plane crash

"The scene presented some complexities for responding emergency services," said Acting Superintendent John Walke.

"We've had to use cranes and so forth in order to try and move the bridge and safely remove the vehicle."

"It's a very unfortunate and tragic result."

Both men were Sydney Trains workers.

SafeWork NSW has been notified.

Emergency services were called to Inch Street in Lithgow following reports of the truck crash about 8.50am.

Officers responded to find that a 'cherry picker' had hit the bridge, causing it to collapse.

"We'll be supporting not only our own staff but our people across the railway who will feel this loss and working as we investigate the cause of this accident," Sydney Trains Chief Executive Matt Longland said.

A recovery operation is still ongoing as emergency services continue to try and safely move the bridge and remove the truck.

Part of the investigation into the cause will examine the driver's speed and whether there was adequate signage on the bridge.

DOWNLOAD THE 9NEWS APP: Stay across all the latest in breaking news, sport, politics and the weather via our news app and get notifications sent straight to your smartphone. Available on the Apple App Store and Google Play.