BOISE, Idaho -

A Hollywood stuntman is hoping to do what famous daredevil Evel Knievel never could: jump the Snake River Canyon.

Eddie Braun is planning to strap into a steam-powered rocket and travel 430 mph to soar to the other side of the canyon this weekend. The launch had been slated for Saturday, but the crew says they're being flexible due to thunderstorm activity in the area.

The jump is not open to the public because the launch pad and landing site are located on private property. The jump will be live-streamed on the Internet.

Braun has spent more than three years preparing for this jump and that completing it would fulfil a lifelong goal.