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Client:
Municipality of Anchorage
Owner: Municipality of Anchorage
Cost of Work: $2.2 million
This project consisted of phased improvements for ½ mile
of collector street in South Anchorage, including a 43-foot
asphalt-paved road-way, concrete curbs and gutters, illumination,
a sidewalk, a bike path, and twin railroad bridges. The
all-steel, 134-foot, three-span bridges required
extensive coordination with various agencies. Design of
the bridges,
funded by the Municipality
of Anchorage and constructed by the State of Alaska under
its contract for upgrading Dimond Boulevard, required
review by the Alaska Railroad prior to final approval.
Despite inevitable delays associated with this three-party
review, design was complete and bid-ready three months
from the date of conception.
A continuous-span-type bridge
was utilized due to construction limitations and time constraints.
This proved extremely economical, and was the first of its
kind used by the Alaska Railroad in the state. Design allowed
easy erection of the steel superstructure, and the first
train crossed approximately two weeks after bridge construction
commenced. The bridges were constructed for just under the
engineer's estimate of $1 million, and won a Merit Award
from the James F. Lincoln Arc Welding Foundation.
The remainder of
the street improvement project was divided into two
phases.
The work encompassed surveys; foundation investigation;
drainage studies and design; a decisional report; bridge,
road, and retaining wall design; landscaping; contract
documents; and permitting.
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