ROSEVILLE (CBS13) – Officials are unveiling the first phase of a $50 million improvement to the Interstate 80-Highway 65 interchange.

It will provide a third lane on northbound Highway 65 from I-80 to Pleasant Grove Boulevard. There are also improvements to the Galleria Boulevard/Stanford Ranch Road interchange, including signals that Placer County hopes will relieve congestion and improve safety.

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This construction started in the spring of 2018. Most of the construction has been done at night.

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With the interchange being one of the most congested in the Sacramento/Roseville area, Placer County officials made improving the stretch a priority.

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A ceremony to celebrate the completion of the work will be held on Thursday morning.