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, December 5, 2025
DATE: Friday, December 5, 2025
TRAFFIC IMPACT AND DURATION: From Monday, December 8, through Friday, December 12, between 6 AM and 3 PM, U.S. Route 2/7 (U.S. 2/7) will have lane closures at the Interstate 89 (I-89) Exit 16 southbound off-ramp and northbound on-and-off ramps, and potential lane width reductions along the ramps for drainage work. In addition, U.S. 2/7 between Hercules Drive and Rathe Road will have lane closures for stormwater pond work and blasting. Intermittent blasting events will also require U.S. 2/7 between the Park & Ride and Rathe Road, and all intersecting sideroads to be shut down for approximately 10 minutes. To learn more about traffic impacts associated with blasting activities, click here.
Independent utility companies will be on-site conducting utility work along U.S. 2/7 throughout the project area under lane closures.
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: Crews will continue drainage work along U.S. 2/7 at the I-89 Exit 16 southbound off-ramp and northbound on-and-off ramps, and work on the stormwater pond along U.S. 2/7 between Hercules Drive and Rathe Road.
Intermittent blasting events will continue next week during daytime hours along the west side of U.S. 2/7 between the Park & Ride and Rathe Road. Independent utility work will take place along U.S. 2/7 throughout the project limits.
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Weekly Construction Update - Wednesday, November 26, 2025
DATE: Wednesday, November 26, 2025
SPECIAL ANNOUNCEMENT: Crews will be off the roadway by noon today, November 26, for the Thanksgiving holiday. Work will resume in the project area on Monday, December 1.
TRAFFIC IMPACT AND DURATION: From Monday, December 1, through Friday, December 5, between 6 AM and 3 PM, U.S. Route 2/7 (U.S. 2/7) will have lane closures between Interstate 89 (I-89) and Rathe Road (the Park and Ride) for drainage work. In addition, Wednesday through Friday, between 6 AM and 3 PM, intermittent blasting events will require U.S. 2/7 between Rathe Road and Hercules Drive and all intersecting sideroads to be shut down for approximately 10 minutes. To learn more about traffic impacts associated with blasting activities, click here.
In addition, independent utility companies are on-site conducting utility work along U.S. 2/7 throughout the project limits under lane closures.
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: Crews will continue drainage work along U.S. 2/7 between I-89 and Rathe Road (the Park and Ride). Intermittent blasting events will resume on Wednesday, taking place along U.S. 2/7 between Rathe Road and Hercules Drive. Independent utility work will take place along U.S. 2/7 throughout the project limits.
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Traffic Alert - 11/23/2025
Date: Sunday, November 23, 2025
Interstate 89 Exit 16 Southbound On-Ramp Closed from Sunday, November 23, at 9 PM through Monday, November 24, at 6 AM
From Sunday, November 23, at 9 PM through Monday, November 24, at 6 AM, the Interstate 89 (I-89) Exit 16 southbound on-ramp will be closed overnight for drainage work. During the closure, U.S. Route 2/7 traffic seeking to turn onto I-89 southbound at Exit 16 will be detoured to Exit 15 in Winooski. Drivers will be directed to travel southbound on U.S. 2/7, turn right onto Tigan Street, turn left onto Weaver Street, turn left onto West Allen Street, turn right onto U.S. 2/7 (Main Street) southbound, enter the Winooski roundabout and take the third exit onto Vermont Route 15, continue eastbound to Exit 15 and turn right onto the Exit 15 southbound on-ramp to enter I-89 southbound. Signage and message boards will be posted at U.S. 2/7 near Exit 16 and along the detour route to guide drivers.
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Weekly Construction Update - Friday, November 21, 2025
DATE: Friday, November 21, 2025
SPECIAL ANNOUNCEMENT: Crews will be off the roadway by noon on Wednesday, November 26, and will return to the project area on Monday, December 1, at 6 AM, in observance of the Thanksgiving holiday.
TRAFFIC IMPACT AND DURATION: From Sunday, November 23, at 9 PM through Monday, November 24, at 6 AM, the Interstate 89 (I-89) Exit 16 southbound on-ramp will be closed overnight for drainage work. During the closure, U.S. Route 2/7 traffic seeking to turn onto I-89 southbound at Exit 16 will be detoured to Exit 15 in Winooski. Drivers will be directed to travel southbound on U.S. 2/7, turn right onto Tigan Street, turn left onto Weaver Street, turn left onto West Allen Street, turn right onto U.S. 2/7 (Main Street) southbound, enter the Winooski roundabout and take the third exit onto Vermont Route 15, continue eastbound to Exit 15 and turn right onto the Exit 15 southbound on-ramp to enter I-89 southbound. Signage and message boards will be posted at U.S. 2/7 near Exit 16 and along the detour route to guide drivers. More details will be issued in an upcoming Traffic Alert.
On Monday, November 24, and Tuesday, November 25, between 6 AM and 3 PM, and Wednesday, November 26, between 6 AM and 12 PM, U.S. Route 2/7 (U.S. 2/7) will have lane closures near Whitcomb Street (Champlain Farms) and Rathe Road (the Park and Ride) for drainage work. The I-89 southbound on-ramp and northbound on-ramp will have lane width reductions.
In addition, independent utility companies are on-site conducting independent utility work along U.S. 2/7 throughout the project limits, under lane closures.
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: Crews will continue drainage work along U.S. 2/7 near Whitcomb Street and near Rathe Road. East Coast Signals will be on-site installing temporary traffic signals at the intersection of U.S. 2/7 and Mountain View Drive off the roadway. Crews will remove material from previous blasting events along U.S. 2/7 near the I-89 northbound on-ramp. No blasting activities are anticipated to take place next week, with blasting activities anticipated to resume the week of December 1.
Independent utility work will take place along U.S. 2/7 throughout the project limits under lane closures.
Read moreDriving Animations
Experience Exit 16 DDI
