New lanes on I-84 between Caldwell, Nampa will open Thursday

Drivers on Interstate 84 in Canyon County can take advantage of a third lane each direction between Franklin Road (Exit 29) in Caldwell and Karcher Road (Exit 33) in Nampa beginning Thursday morning.

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The project, which began in the summer of 2021 at a cost of $136 million, is scheduled to be fully complete by August, according to an Idaho Transportation Department news release Wednesday evening.

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Improvements along the corridor include: adding the third lanes on I-84; adding additional ramp lanes at Franklin and Karcher westbound off-ramps; building two median walls on I-84; adding two soundwalls along I-84; and replacing 20 bridges throughout the corridor.

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Over the next several months, construction crews will finish installing fences, sealing bridge decks and seeding shoulders.

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“ITD would like to thank the community for their patience during the construction of this important project, as well as all the projects that were tied in with the widening,” said Mark Campbell, Idaho Transportation Department project manager.

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He also thanked the contractors “for completing the work on time and within budget.”

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This summer, ITD plans to continue widening I-84 in Caldwell between the Centennial Way interchange and Franklin Road interchange. For details about the continued I-84 expansion in Canyon County, visit itdprojects.org/projects/84corridor/.