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Overview
The Tulalip Tribes reconstructed the existing Interstate 5 interchange at 116th Street Northeast into a new single-point urban interchange (SPUI). This configuration increases capacity, reduces delays and improves turning movements to allow more vehicles through the interchange in a single light cycle. The Tulalip Tribes took the lead in planning this four phase transportation improvement project. Partners included WSDOT, the Federal Highway Administration, Bureau of Indian Affairs, Snohomish County and the City of Marysville. This is the fourth and final phase in the diamond interchange replacement project on Interstate 5 at 116th Street Northeast.
Previous phases:
February 2018: Construction began.
October 2020: Construction complete.
WSDOT’s contribution to this project was $15.49 million.
Northwest Region Communications
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