Vermont’s First Diverging Diamond Interchange

The Vermont Agency of Transportation (VTrans) is improving the roadway along the U.S. Routes 2/7 (U.S. 2/7) corridor, in the vicinity of Interstate 89 (I-89) Exit 16, to enhance mobility and safety in Colchester, Vermont. The project area extends from the Colchester-Winooski town line north for approximately 1 mile to just beyond the intersection of Sunderland Woods Road at U.S. 2/7. The core of the project is to reconfigure the existing tight diamond interchange to a Diverging Diamond Interchange at I-89 Exit 16.

Learn more about this and other improvements

Image of Interchange

Project Updates

Weekly Construction Update 9/29/2023

DATE: Friday, September 29, 2023

TRAFFIC IMPACT AND DURATION:

Next week, during the daytime hours of 6:00 a.m. to 4:00 p.m., the outermost northbound lane of U.S. 2/7 will be closed for independent utility work. Independent utility crews will begin working beneath the interstate bridges continuing south towards South Park Drive (near Burger King). Motorists are strongly encouraged to use caution while driving through the work zone and pay close attention to signage as traffic patterns will change.

CONSTRUCTION ACTIVITIES:  

Next week, S.D. Ireland crews will be off-site.

Next week, during the daytime hours, Vermont Gas Systems will be conducting independent utility work along the east side of U.S. 2/7 between the Interstate bridges and South Park Drive under a single-lane closure. This independent utility work is anticipated to begin on Tuesday, October 3, and continue over the next several weeks.

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Weekly Construction Update 9/22/2023

DATE: Friday, September 22, 2023

TRAFFIC IMPACT AND DURATION:

Monday, September 25, through Friday, September 29, during the daytime hours of 6:00 a.m. – 4:00 p.m., the outermost northbound lane of U.S. 2/7 will be closed for independent utility work. Motorists are strongly encouraged to use caution while driving through the work zone and pay close attention to signage as traffic patterns will change.

CONSTRUCTION ACTIVITIES:  

Next week, S.D. Ireland crews will be off-site. During daytime hours, Vermont Gas Systems will be conducting independent utility work along the east side of U.S. 2/7 under a single-lane closure.

Read more

Driving Animations

Experience Exit 16 DDI

Driving simulation traveling on US 2 West / 7 North through the DDI

Aerial view of the operating diverging diamond interchange at I-89 Exit 16

Driving simulation exiting I-89 onto US 2 East/7 South via Exit 16

Driving simulation traveling on US 2 East/7 South through the DDI

Driving simulation exiting I-89 onto US 2 West / 7 North via Exit 16