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.
Project Updates
Weekly Construction Update - Friday, October 31, 2025
DATE: Friday, October 31, 2025
SPECIAL ANNOUNCEMENT: The Interstate 89 Exit 16 southbound on-ramp is scheduled to be closed overnight from 10 PM on Sunday, November 16, through 6 AM on Monday, November 17, for drainage work, with traffic maintained via a signed detour route. More details regarding this overnight ramp closure will be issued in upcoming Construction Updates and supplemental Traffic Alerts.
TRAFFIC IMPACT AND DURATION: From Monday, November 3, through Friday, November 7, between 6 AM and 3 PM, U.S. 2/7 will have a lane closure along the east side of the roadway between South Park Drive and the I-89 southbound on-ramp for drainage work, and along the west side of the roadway between the I-89 northbound on-ramp and Mountain View Drive for blasting. There is potential for a lane reduction on South Park Drive at its intersection with U.S. 2/7, and width reduction on the I-89 southbound on-ramp. For each blasting event, U.S. 2/7 between South Park Drive and Mountain View Drive and all intersecting sideroads will be shut down for approximately 10 minutes, and temporary traffic holds (rolling roadblocks) will occur on the I-89 Exit 16 interchange ramps. To learn more about traffic impacts associated with blasting activities, click here.
Motorists should expect significant delays when traveling through the work zone and along adjacent roadways. Please plan ahead, leaving plenty of additional time to get to and from your destination. Whenever possible, consider alternate routes or other forms of transportation such as carpooling, ridesharing, transit, biking, or walking. Drivers should slow down, use caution, and follow flaggers and road signs.
CONSTRUCTION ACTIVITIES: Next week, crews will continue drainage work on the east side of U.S. 2/7 between the I-89 southbound on-ramp and South Park Drive, including along the southbound on-ramp and South Park Drive. Blasting events will continue to take place on the west side of U.S. 2/7 between the I-89 northbound on-ramp and Mountain View Drive, near the CVS Pharmacy.
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Weekly Construction Update - Friday, October 24, 2025
DATE: Friday, October 24, 2025
TRAFFIC IMPACT AND DURATION: From Monday, October 27, through Friday, October 31, between 6 AM and 3 PM, U.S. 2/7 will have a lane closure along the east side of the roadway between South Park Drive and the I-89 southbound on-ramp (near the Shell Gas Station) and just north of Hercules Drive (near Lucky’s Trailer Supplies) for drainage work. Throughout the week, U.S. 2/7 will have a lane closure along the west side of the roadway between the I-89 northbound on-ramp and Mountain View Drive, U.S. 2/7 between South Park Drive and Mountain View Drive and all intersecting sideroads will be shut down for approximately 10 minutes, and rolling roadblocks will be initiated on I-89 between Exits 14 and 17 for each blasting event. To learn more about traffic impacts associated with blasting activities, click here.
Motorists should expect significant delays when traveling through the work zone and along adjacent roadways. Please plan ahead, leaving plenty of additional time to get to and from your destination. Whenever possible, consider alternate routes or other forms of transportation such as carpooling, ridesharing, transit, biking, or walking. Drivers should slow down, use caution, and follow flaggers and road signs.
CONSTRUCTION ACTIVITIES: Next week, crews will continue drainage work for the dry ponds being constructed on the east side of U.S. 2/7 near the I-89 southbound on-ramp and on U.S. 2/7 just north of Hercules Drive. Blasting events will continue to take place along U.S. 2/7 between Mountain View Drive and the I-89 northbound on-ramp, near the CVS Pharmacy.
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Weekly Construction Update - Friday, October 17, 2025
DATE: Friday, October 17, 2025
SPECIAL ANNOUNCEMENT: Blasting activities are scheduled to begin TODAY, Friday, October 17, and will continue through the end of November. Blasting activities will take place along U.S. Route 2/7 (U.S. 2/7) between South Park Drive and Mountain View Drive, with initial blasts along U.S. 2/7 between Mountain View Drive and the Interstate (I-89) northbound on-ramp, near the CVS Pharmacy. One blasting event is expected to take place each weekday (potential for two) and blasting will be restricted to daytime hours, with crews off the roadway by 3 PM. Blasting activities are weather-dependent. To learn more about drilling and blasting activities, click here.
TRAFFIC IMPACT AND DURATION: From Monday, October 20, through Friday, October 24, between 6 AM and 3 PM, U.S. 2/7 between South Park Driveway and the I-89 southbound on-ramp will have a lane closure near the Shell Gas Station, and U.S. 2/7 just north of Hercules Drive will have a lane closure, with traffic shifted near Lucky’s Trailer Supplies. Throughout the week, U.S. 2/7 between South Park Drive and Mountain View Drive and all intersecting sideroads will be shut down for approximately 10 minutes and rolling road blocks will be initiated on the I-89 between Exits 14 and 17 for each blasting event. To learn more about traffic impacts associated with blasting activities, click here.
Motorists should expect significant delays when traveling through the work zone and along adjacent roadways. Please plan ahead, leaving plenty of additional time to get to and from your destination. Whenever possible, consider alternate routes or other forms of transportation such as carpooling, ridesharing, transit, biking, or walking. Drivers should slow down, use caution, and follow flaggers and road signs.
CONSTRUCTION ACTIVITIES: Next week, crews will continue drainage work for the dry ponds being constructed on the east side of U.S. 2/7 near the I-89 southbound on-ramp and on U.S. 2/7 just north of Hercules Drive. Blasting events will take place along U.S. 2/7 between Mountain View Drive and the I-89 northbound on-ramp, near the CVS Pharmacy.
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Traffic Alert - Blasting Update
DATE: Thursday, October 16, 2025
Blasting Activities Scheduled to Begin Friday, October 17
The start of blasting activities has been rescheduled for Friday, October 17, and will continue through the end of November. Blasting activities will take place along U.S. Route 2/7 (U.S. 2/7) between South Park Drive and Mountain View Drive with initial blasts along U.S. 2/7 and Mountain View Drive near the CVS Pharmacy and the Interstate 89 (I-89) northbound on-ramp. Up to two blasting events will take place each weekday and will be restricted to daytime hours with crews off the roadway by 3 PM. Blasting activities are weather-dependent.
Read moreDriving Animations
Experience Exit 16 DDI
