Dedication of new Hoover Dam bridge
A dedication ceremony has taken place for the Hoover Dam bridge, which has been completed after eight years' work.
The 1,900-foot (580m) structure high above the Colorado River allows travellers to bypass the dam much more quickly and with no checkpoints.
Speaking at the ceremony, Harry Reid, US Senate Majority Leader, praised the ''wonderful'' views and Transportation Secretary Ray LaHood said the achievement showed the US can still ''dream big''.
The new four-lane bridge officially opens next week.