New York ? The drawing of a familiar superhero stares out from the double doors of the dark Hilton Theatre on 42nd Street, just west of Times Square.

The red-and-blue-clad figure looks trapped inside the building, unable to get out, an apt metaphor perhaps for the show he is trumpeting: “Spider-Man Turn Off the Dark,” a $50 million — and counting — Broadway musical celebrating the exploits of America’s most famous web slinger.

So far, all the drama has been offstage for what most likely will be the most expensive production in Broadway history for some time to come.

The mammoth musical directed and co-written by Julie Taymor of “Lion King” fame and featuring a score by Bono and The Edge, was at one time set to begin preview performances Feb. 25 with an official opening scheduled for sometime in April.

The “Spider-Man” producers have been tightlipped about the show’s status except for an occasional chipper press release announcing the musical is “moving forward” with additional financing under the supervision of the show’s current lead producer, Michael Cohl. He came aboard in November.

New performance dates for the show are expected to be announced shortly with speculation about the rescheduled opening ranging from this summer after the Tony Awards in June to next fall.

Work on “Spider-Man” stopped last year because of financial difficulties, including an expensive renovation of the Hilton, reportedly to accommodate Taymor’s environmental staging of the show, which would have the action — including some aerial bits of derring-do — swirl throughout the theater. And both production and financing have proved difficult to get back on track.

The 1800-seat Hilton is one of Broadway’s biggest and unluckiest theaters. It was cobbled together by Canadian producer Garth Drabinsky from the shells of two venerable playhouses — the Lyric and the Apollo.

The theater officially opened in January 1998 with Drabinsky’s production of “Ragtime,” which ran for two years and never made any money. Most of the Hilton’s subsequent tenants have been less than illustrious.

“Spider-Man” the musical has been in the works for more than six years, starting with an announcement about the show in 2004 from producer Tony Adams, who died unexpectedly the next year of a stroke. Adams was replaced by David Garfinkle, a Chicago lawyer, who bowed out of the lead producer slot after financial pressures mounted.

No one is speaking on the record about “Spider-Man,” not Taymor, Bono or its cast. The performers include rock singer Reeve Carney as the title character and Peter Parker, his mild alter-ego; Evan Rachel Wood as Mary Jane Watson, Parker’s girlfriend, and Alan Cumming in the role of Norman Osborn, also known as the villainous Green Goblin.

But in a New York Times report of a recent TimesTalk event, Cumming alluded to the show’s financial problems, saying it’s “a really weird, frustrating thing to be waiting.”