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Knife River


Knife River Executes Bridge Slides on I-84

The twin east-west bridges – 112 ft. long, two lanes each – at the Blacks Creek Interchange on I-84 in Ada County, Ida. (20 mi. east of Boise and built in 1963) reached the end of their lifespan and have been replaced – hence the Idaho Transportation Department's (ITD) $12.1 million project awarded to Knife River Corporation that had prefabricated two new bridges off-site that were eventually slid into place....


Knife River Corp. Replacing 80-Year-Old Idaho Bridge

Knife River Corporation is constructing the Idaho Transportation Department's (ITD) $7.3 million U.S. 95 Weiser River Bridge Replacement project, which involves rebuilding a two-lane structure that has been in existence for more than 80 years dating back to 1939....


Idaho Transportation Department Begins Bridge Replacements

The Idaho Transportation Department will begin work April 1, 2019 on two bridge construction projects along U.S.-20. The new crossings will be located over Willow Creek in Camas County (MP 164) and Rock Creek in Blaine County (MP 173)....


Cellulose-Infused Concrete Is One Step Closer to Reality

On a sunny summer day at Oregon State University, before an audience of researchers and representatives from the construction industry, a Knife River-owned ready-mix cement truck poured a batch of concrete....






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39.04690 \\ -77.49030 \\ Ashburn \\ VA