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UP chugs along with track improvements in Arizona

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As it waits for the economy to improve, Union Pacific's construction plans are heading in two directions, The Arizona Republic reports. Although it has postponed plans to finish doubling its tracks in Arizona, the company has begun a $42-million upgrade to its existing rails.

The company began doubling
its heavily used southern Arizona line from Los Angeles to El Paso in the
middle of the past decade to allow it to transport more containers from California
ports to the interior United States. Because the recession cut freight movement
and Union Pacific’s revenue, the company slowed the remaining work in 2009 and
then stopped it this year, said Zoe Richmond, a spokeswoman.

The project was about 60
percent done and was supposed to be finished in 2012. Richmond added that it is
unknown when the project will resume.

"The work slowed down
because there isn’t the business need," she said.

Business has picked up,
though, an indication that the economy is improving as well. Union Pacific said
that through mid-March, the number of containers, cars and truck tractors
carried on trains this year had increased 12 percent compared with the same
period a year earlier.

In January, the company
began replacing miles of rail lines, particularly in rail yards in Phoenix and
Tucson and on a main line between Casa Grande and Yuma. The $42 million being
invested includes $18 million to buy concrete ties that are made of cement
produced near Tucson.

Union Pacific has been
steadily replacing wooden ties with concrete ones on its more heavily used
lines across the country because they don’t weather as fast and aren’t
susceptible to termites. Even though wooden ties are soaked in creosote, an
oily preservative, they don’t hold up well in the Arizona desert, Richmond

Union Pacific began using
concrete ties when the second track was added to the Sunset line between Los
Angeles and El Paso in 2005, and the railroad added more this year on a line
between Maricopa and Gila Bend.

Concrete ties are just one
of the innovations that have come to the rail industry. Rails can now be
installed mechanically en masse, and computers have taken the place of

Most of Union Pacific’s
concrete ties are being installed with its "track-renewal train," a
mile-long machine called the TRT 909 that can install up to 5,000 ties in a
12-hour day. It includes 30 rail cars each carrying 210 concrete ties and three
cranes used to move the concrete ties forward.

At the front of the
machine, old wooden ties and rails are picked up, and at the back, the new ties
are automatically dropped into place and new rails threaded onto the ties. It
also can be used for wooden or composite ties.

When the work in Arizona is
done, crews will have installed an estimated 156,000 wooden and 58,000 concrete
ties and 24 miles of welded rails.

The work is expected to be
done by the end of May.

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