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, April 10, 2026
TRAFFIC IMPACT AND DURATION:From Monday, April 13, through Friday, April 17, between 6 AM and 3 PM, there will be a southbound lane closure along the west side of U.S. 2/7 from Whitcomb Street to Mountain View Drive. In addition, there will be an intermittent northbound lane closure along the east side of U.S. 2/7 between South Park Drive and the Interstate 89 (I-89) southbound on-ramp and along the I-89 northbound off-ramp.
Motorists should expect significant delays when traveling through the work zone and along adjacent roadways. Please plan ahead, consider alternative routes, or use other forms of transportation (carpooling, ridesharing, transit, biking, or walking). Drivers should slow down, use caution, and follow flaggers and signage.
CONSTRUCTION ACTIVITIES:Crews will continue to work on roadway widening and the installation of light pole foundations and conduit along the west side of U.S. 2/7 between Whitcomb Street and the I-89 southbound off-ramp and the I-89 northbound on-ramp and Mountain View Drive. Crews will continue installing overhead sign foundations along the east side of U.S. 2/7 between South Park Drive and I-89 southbound on-ramp and along the I-89 northbound off-ramp. In addition, temporary traffic signals will be installed at the intersection of U.S. 2/7 at South Park Drive/Highpoint Center.
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Weekly Construction Update - Friday, April 3, 2026
TRAFFIC IMPACT AND DURATION: From Monday, April 6, through Friday, April 10, between 6 AM and 3 PM, the following traffic impacts will be in effect:
- single lane closure along the west side of U.S. Route 2/7 (U.S. 2/7) from Whitcomb Street to Mountain View Drive,
- intermittent single lane closure along the east side of U.S. 2/7 from South Park Drive and the Interstate 89 (I-89) southbound on-ramp,
- intermittent lane width reductions and potential intermittent lane closures along the I-89 northbound off-ramp and the I-89 southbound off-ramp,
- an instance of a single lane closure with traffic shifts on Mountain View Drive near the interstate.
Motorists should expect significant delays when traveling through the work zone and along adjacent roadways. Please plan ahead, consider alternative routes, or use other forms of transportation (carpooling, ridesharing, transit, biking, or walking). Drivers should slow down, use caution, and follow flaggers and signage.
CONSTRUCTION ACTIVITIES: Next week, crews will continue working along the west side of U.S. 2/7 between Whitcomb Street and Mountain View Drive installing light pole bases, widening the roadway and constructing the slip lanes for the I-89 southbound off-ramp and the I-89 northbound on-ramp. Crews will be installing overhead sign foundations and light pole bases along U.S. 2/7 between South Park Drive and the I-89 southbound on-ramp, the I-89 southbound off-ramp and I-89 northbound off-ramp, and Mountain View Drive near the interstate.
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JOIN US
The Exit 16 DDI will be joining the Burlington-Winooski Bridge Project at their Public Information Open House.
Wednesday, April 29, 2026
5 PM to 7 PM
Winooski School District
60 Normand Street
Weekly Construction Update - Friday, March 27, 2026
DATE: Friday, March 27, 2026
TRAFFIC IMPACT AND DURATION: From Monday, March 30, through Friday, April 3, between 6 AM and 3 PM, the following traffic impacts will be in effect:
- single lane closure along the west side of U.S. Route 2/7 (U.S. 2/7) from Whitcomb Street to Mountain View Drive,
- intermittent single lane closure along the east side of U.S. 2/7 from South Park Drive and the Interstate 89 (I-89) southbound on-ramp,
- intermittent lane width reductions and potential intermittent lane closures along the I-89 northbound off-ramp.
Motorists should expect significant delays when traveling through the work zone and along adjacent roadways. Please plan ahead, consider alternative routes, or use other forms of transportation (carpooling, ridesharing, transit, biking, or walking). Drivers should slow down, use caution, and follow flaggers and signage.
CONSTRUCTION ACTIVITIES:Next week, crews will be working along the west side of U.S. 2/7 between Whitcomb Street and Mountain View Drive widening the roadway and constructing the slip lanes for the I-89 southbound off-ramp and the I-89 northbound on-ramp. Crews will be installing overhead sign foundations along U.S. 2/7 between South Park Drive and the I-89 southbound on-ramp and along the I-89 northbound off-ramp.
Read moreDriving Animations
Experience Exit 16 DDI
