Hoover Dam Bridge

1
Hoover Dam Bridge
2
Creeping closer, 900 above the Colorado River,
the two sides of a 160 million bridge at the
Hoover Dam slowly takes shapeThe bridge will
carry a new section of US Route 93 past the
bottleneck of the old road which can be seen
twisting winding around across the dam
3
The road will be supported on two massive
concrete arches that jut out of the rock
faceThe arches are made of 53 sections, each
24 long, that are cast on-site are lifted in
place using a high-wire crane strung between
temporary steel pylons The arches will
eventually measure more than 1,000 across
4
At the moment, the structure looks like a
traditional suspension bridgeBut once the
arches are complete, the suspending cables on
each side will be removedExtra vertical columns
will then be installed on the arches to carry the
road
5
The bridge known as the Hoover Dam bypass, is
officially called the Mike O'Callaghan-Pat
Tillman Memorial BridgeWork on the bridge
started in 2005 and should finish next yearAn
estimated 17,000 cars trucks will cross it
every day
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)