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For the week of March 7 through 13, 2001

Highway 75 bridge construction starts

Express Staff Writer

Wide swaths of cleared snow and dirt gave valley drivers a good idea of what’s coming with the new Big Wood River bridge at Greenhorn Gulch.

Bulldozers did the clearing at the end of last week, and Monday dump trucks began dumping riprap into the river.

Tom Logan, Idaho Transportation Department (ITD) supervisor of the project, said the riprap will be removed after the contractor, Nelson Construction, installs the footing for the new bridge.

That phase of the construction, he said, should be done by today. Once the bridge support is in, workers will bring in a pile driver to sink supports into both sides of the river.

Wayne Hamilton, an ITD inspector at the site, said the riprap will be used as a "building pier" so heavy equipment can install a pad for a bridge support.

Construction crews will hammer a form 13 feet into the river bottom to bedrock, Hamilton said, and then the rock inside the form will be scooped out.

Concrete will then be poured into the form to make the footing.

The construction, part of the project from Alturas Drive to Timber Way, will replace the two-lane bridge built in 1934 with a three-lane bridge.

The bridge replacement work will be followed by construction of a diversion at East Fork Road to allow normal traffic flow while a bicycle tunnel is built to connect East Fork with the Golden Eagle II subdivision.

Hamilton said the entire project, including construction of the bridge, will be completed by August 2002.


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