Theatres around the world have been restored, renovated, or replaced; that’s nothing new. But encapsulated? Now that’s a new approach to modernization.

In Washington, DC, the venerable Arena Stage has long operated a two-venue facility: its Fichandler Theatre, a 1961, arena-style house (hence the name) with some 800 seats and the Kreeger, a 514-seat proscenium theatre added in 1971. After 30-odd years, the company felt the need for modernization, expansion, and a touch of reinvention.

Enter Gilbert and Jaylee Mead and Bing Thom. The Meads, benefactors who have had a major impact on the entire Washington theatre community through their support and enthusiasm, were willing to be the lead donors for what is to become the Mead Center for the American Theater, and Thom, a visionary architect based in Vancouver, came up with a concept that matched the vision of the Meads and artistic director Molly Smith.

Thom’s idea? Tear down the lobbies, the workshops, the administrative spaces, the dressing rooms – everything but the auditoria themselves. Then build a new structure around them, encapsulating the venerable venues with a new, highly dramatic and technologically up-to-date facility including one consolidated lobby area that would make visiting the Mead Center part of the event of theatre-going. What’s more, the complex would include a third theatre, a 200-seat flexible space dedicated to the development of new work called, not unreasonably, “The Cradle.”

All three theaters will sit beneath a dramatic cantilevered roof that is rounded on the east and south sides but sharpens to a point on the west pointing along the Washington waterfront toward the Washington Monument and the mall. Glass enclosed, what was once the highly identifiable exterior of the Fichandler Theatre will still be visible as theatergoers arrive at the main entrance along 6th Street in Southwest DC.

We took a hard hat tour of the facility recently as the major glass, concrete, and Parallam Parallel Strand Lumber structural work comes to a head. Parallam? That’s a composite wood product bound by epoxy that is usually used to make beams that can be stronger and longer than what could be carved out of a tree trunk. Here, the material creates gorgeous wooden columns that support the metal cantilevered roof while permitting the walls of some 370 panes of glass to create 35,000 square feet of window area. (Each Parallam column supports a load of 400,000lbs. of one of the largest cantilevers in the United States.)

With some 14,000 cubic yards of concrete work, the glass, wood, and concrete feel will permeate the 200,000sq-ft. facility. The exteriors of the Fichandler and Kreeger are being preserved while the new concrete exterior of The Cradle completes the expanse of the lobby area. Inside each venue, the mechanics and equipment are being completely updated to 21st century standards.

Arena undertook a fund raising effort to support the $125 million project and had to suspend production at the facility during construction. For the past two years, Arena’s productions have been mounted in two houses away from their home base. That meant that the pre-Broadway engagement of Next to Normal was actually played in the temporary space in Crystal City on the Virginia side of the Potomac while Carrie Fisher’s Wishful Drinking, which Arena hosted in September of last year, was at the Lincoln Theatre on Washington’s historic U Street corridor.

Construction is on schedule to accommodate Arena’s return with the 2010-2011 season. Washington theatre-goers are already seeing visions of things to come, however, through the massive glass walls of the new Mead Center for the American Theater.