Roof construction on the $720-million London 2012 Olympic Stadium began in late January when the first section went up. The U.K.’s Olympic Delivery Authority claims to be on track, but the global banking crisis is spoiling its party. The organization can’t secure as much private funding toward the $13.3-billion construction budget as forecast. Photo: ODA Game venues are on schedule but private money is tight for residential village. Game venues in the London Olympic Park are on schedule, says ODA. But funding negotiations with Australia’s Lend Lease Corp. for the public-private Olympic Village "are continuing," says David Higgins, ODA’s chief
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.