May 27, 2008
Main span erection begins on I-35W Bridge
Minnesota Department of Transportation
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Crews began erecting the main span of the Interstate 35W St. Anthony Falls Bridge project this past weekend, according to Minnesota Department of Transportation.
The first pair of pre-cast concrete main span segments was placed on Sunday, May 25. Placing the segments is a precise procedure involving hydraulic jacks and detailed surveying. Crews will wait several days before the next segment placement to allow time for a closure pour (between the main span segment and the approach span), concrete curing and post-tensioning work in preparation for the next segment placement.
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October 9, 2007
Mn/DOT awards I-35W bridge contract to Flatiron-Manson construction team
Publication: ECM capitol reporter by T.W. Budig
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The Minnesota Department of Transportation (Mn/DOT) awarded the I-35W bridge contract to the Flatiron-Manson construction team on Monday (Oct. 8).
The awarding came the same day the Minnesota Department of Administration opined that no aspect of the design-build contract letting process used by Mn/DOT for the bridge had been arbitrary or capricious.
The accepted Flatiron-Manson bridge bid was for $234 million — not the lowest bid submitted. Flatiron is based in Colorado.
But other factors beyond price are weighed.
Arches, water and reflection
The primary theme of the Flatiron-Manson bridge design, unveiled on Monday, is arches, water and reflection.
The new bridge will be built of high performance concrete with graceful, arching piers on the Mississippi River edge with an arch of lights reflecting onto the river from the bridge deck above.
From river edge to river edge, the bridge will span 504 feet though its overall length will be about 1200 feet.
Lead designer on project Linda Figg, president and director of Bridge Art for Figg Engineering of Florida said the downtown Minneapolis bridge site was “a very exciting site,” saying the new bridge design will enhance the modern and historic aspects of the river front. “It will be a model for other bridges in America,” she said.
The public will be able to help determine some design features of the bridge — its color, the design possibilities of the its piers.
Design session planned Oct. 22
A design session is expected to take place the week of Oct. 22 where local government officials, business leaders, and residents will be able to offer suggestions on the final appearance of the bridge.
Some structural features of the bridge, besides the use of high performance concrete and design redundancies, will be the use of state-of-the-art sensor and monitoring system built into the bridge.
“This will be a smart bridge,” said Figg.
The bridge is designed so that at some future date a pedestrian bridge can be suspended beneath it.
The construction schedule calls for the new bridge to completed by the end of 2008, with ribbon-cutting anticipated for Christmas Eve.
“Our top priority is safety — both throughout construction and during the entire life of the bridge,” said Flatiron-Manson project manager Peter Sanderson.
Bridge will mean 400 jobs
Sanderson said the bridge project will translate into about 400 full-time jobs.
An emphasis will be placed on the use of Minnesota materials and labor, he explained.
Ground breaking on the project is planned for Oct. 15.
Lt. Gov./Mn/DOT Commissioner Carol Molnau in a statement said the City of Minneapolis had signed off on the project and all of the partners are onboard.
Molnau did not personally attend the Capitol press conference, Mn/DOT staff saying she had been called away on family matters.
Flatiron is based in Longmont, Colo., and Manson Construction is out of Seattle, a company specializing in bridge and waterway construction.
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April 12, 2006
Manson Construction Wins $4.03 Million Contract
Publication: US Fed News Service, Including US State News
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NEW ORLEANS, April 12 -- The U.S. Army has awarded a $4.03 million contract to Manson Construction Co., Seattle, for the construction of structures and facilities from the Mississippi River Baton Rouge to the Gulf of Mexico, Southwest Pass and Cubit's Gap, Plaquemines Parish, La.
The contract was awarded by the U.S. Army Engineer District, New Orleans.
For more information about US Fed News contract awards please contact: Myron Struck, Managing Editor/US Bureau, US Fed News, Direct: 703/866-4708, Cell: 703/304-1897, Myron@targetednews.com.
For more information, contact Katrina Pelrean at 504/862-2880, or e-mail katrina.d.pelrean@mvn02.usace.army.mil.
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Skyway Construction Kiewit-FCI-Manson (KFM), a Joint Venture
The San Francisco-Oakland Bay Bridge Seismic Safety Projects
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The new East Span of the Bay Bridge will look and perform very differently from the original 1936 double-deck cantilever bridge. The new span will feature a unique single tower suspension bridge, connecting to a mile-long elevated viaduct, or Skyway. The parallel roadways of the new span will provide motorists with sweeping views of San Francisco Bay. Each deck will accommodate five lanes of traffic and include 10-foot-wide shoulders to help keep traffic moving.
The Skyway has massive pilings reaching deep into bay soils and seismic safety devices that will enable the road decks to move, rather than buckle, in the event of an earthquake. Some elements of the span have been specifically designed to deform during an earthquake in order to protect the most important parts of the bridge’s structure.
Several critical bridge elements were tested in the design phase to assess their viability in the event of a major earthquake, and mock-ups were built to determine their construction feasibility.
The Skyway’s decks are comprised of 452 pre-cast concrete segments, fabricated in Stockton and transported by barge to the project site. These are the largest segments of their kind ever cast. They are lifted into place by winches, which were custom-made for this project.
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