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Bridge - Historic Navajo Bridge
of sign - Navajo Bridge on US 89 in Arizona
taken- July 2008
up view of sign
view of sign
Navajo Bridge Dedicated June 14-15, 1929
the Historic Navajo Bridge opened on January 12, 1929, Flagstaff's
newspaper, the Coconino Sun, called it "the
in Southwest history." It was the only bridge across the
Colorado River for some 600 miles (965 km) and was a vital link in
first direct highway route between Arizona and Utah.
easing access to this remote and rugged region, the bridge played a
valuable and lasting role in transportation, commerce and
in northern Arizona and southern Utah.
500 Pound Shot!
the historic Navajo Bridge was constructed in 1929, blasting the
canyon walls was permitted.
"The closing of the two great halves of the arch bridging the
Colorado River has marked a milestone in the history of
in Arizona." - Ralph A Hoffman, State Bridge Engineer 1928
historic Navajo Bridge was constructed as two cantilevered arch
halves, each extending 305 ft (94 m) over the gorge.
Flagstaff side of the arch was erected first and took two months to
complete. The Fredonia side of the arch was finished two
a half months later. The arch was closed on September 12,
of the Tape
the time of its construction, the historic Navajo Bridge was the
highest steel arch bridge in the world.
length: 834 ft (254 m)
arch length: 616 ft (188 m)
rise: 90 ft (27.4 m)
above the river: 467 ft (142 m)
of the roadway: 18 ft (5.5 m)
of steel: 2.4 million lbs (1,689,000 kg)
of concrete: 500 cu yards (385 m)
of steel reinforcement: 82,000 lbs (37,000 kg)
cost: $390 thousand
Graphics on the Sign
addition to the text there are historical photos of the bridge
and its construction.
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