A 528 ft-wide, 2,650-ton steel truss span, supported by a U-shaped stability frame, is being readied for lift and placement on June 19 as part of a $1.2 billion widening project for the Huey P. Long Bridge in New Orleans, La. Video Photo: Angelle Bergeron A 2,650-ton steel truss span, part of a $1.2 billion widening project for the Huey P. Long Bridge in New Orleans, is prepared for lift and placement on June 19. Related Links: New Scheme Prepared For Bridge-Truss Installation (VIDEO) Span Readied To Receive Steel: A Bridge Grows in New Orleans (VIDEO) Time-Lapse of Huey Long
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.