Bono's 'Spider-Man' costing $40 million

The Broadway version of Spider-Man looks likely to become one of the most expensive musical productions in theatrical history.

The show, which features a score by U2's Bono, currently has a budget of $40 million (£23 million).

Marvel announced last month that it could be ready to open on Broadway next year.

However, it has been reported that some people involved are becoming concerned about the production's spiralling costs.

"It's off the charts," a source told the New York Post.

The interpretation is being directed by Julie Taymor and is said to include lavish stage sets and costumes.