Gov. Ned Lamont announced on April 27, 2026, major progress on the ongoing Interstate 91, Interstate 691 and Route 15 interchange reconfiguration project, including the on-time and on-budget completion of phase one, continued advancement of phase two and the start of phase three.

Phase two, which has been under way for two years, remains on track for completion by 2028, while the full three-phase program is expected to be complete by 2030.

The announcement was made during a news conference at the newly constructed ramp to East Main Street from the new Route 15 northbound bridge over I-91 in Meriden, which is scheduled to open to traffic on May 1, 2026. The first half of the bridge is complete, and the second half will be constructed in the next stage.

Phase three is now under way, with early work that began in April. Crews are preparing the corridor for full reconstruction, including overnight work to maintain traffic flow. This phase will focus on the southbound side, adding new two-lane ramps and reconfiguring key connections to reduce congestion and improve traffic flow, with major bridge work including the Murdock Avenue Bridge scheduled to begin later this summer.

"This project to improve this major traffic corridor in central Connecticut was seriously needed and is focused on supporting the needs of our state's infrastructure for decades to come," Gov. Lamont said. "By modernizing this critical interchange, we will ease congestion for commuters, improve the movement of goods across our state and support long-term economic growth. From day one, we committed to delivering these improvements on-time and on-budget, and today's progress shows we are getting it done for the people and businesses who rely on this corridor every day."

The project is being administered by the Connecticut Department of Transportation.

"We are making strong progress across every phase of this project, thanks to crews working day and night to keep construction moving while maintaining traffic flow," said Garrett Eucalitto, Connecticut Transportation commissioner. "As work continues, we urge drivers to slow down, stay alert and give our crews the space they need to work safely so we can keep this project on track."

Funding comes from combination of state and federal resources. The cost of the first phase is $83.7 million and is entirely funded by the state. The second phase is supported by $50 million in state funding and $200 million federal funding. The third phase will follow a similar model, with approximately 80 percent federal funding and 20 percent state funding. The total cost for all three phases combined is anticipated to be more than $712 million. Federal funding is primarily from the 2021 Infrastructure Investment and Jobs Act (also known as the Bipartisan Infrastructure Law).

The three-phase project is expected to be complete by 2030.

The project's first phase, which was completed between 2023 and 2025, was aimed at repairing bridges, adding a lane of traffic to I-91 and making related road improvements. This included:

• realigning and reconfiguring the ramp from I-691 eastbound to I-91 northbound (Exit 1A old Exit 11) to improve traffic flow and reduce collisions;

• bridge replacement due to the proposed ramp realignment;

• adding an auxiliary lane on I-91 northbound to relieve congestion caused by a steep uphill grade; and

• bridge upgrades due to the added lane.

This second phase currently underway includes:

• adding a new two-lane exit ramp from Route 15 northbound to I-91 northbound to reduce traffic congestion on the Exit 68 N-E ramp;

• closing the existing Exit 17 ramp from I-91 northbound to Route 15 northbound and re-routing traffic to Exit 16 to provide a two-lane exit ramp with a right-side traffic merge onto Route 15 northbound;

• updating the existing Exit 68W ramp from Route 15 northbound to I-691 westbound to two lanes; and

• reconfiguring the acceleration and deceleration lanes to provide adequate traffic weaving distances.

Third phase improvements include:

• a new two-lane exit ramp from Route 15 southbound to I-91 southbound to reduce traffic congestion on the existing Exit 67 ramp;

• a new two-lane I-91 southbound ramp to Route 15 southbound to reduce traffic congestion on the existing Exit 17 ramp;

• upgrading the ramp from I-691 eastbound to Route 15 southbound (Exit 10) to two lanes;

• reconfiguring the ramp from I-91 southbound to I-691 westbound (Exit 18) to two lanes.

The project includes a project labor agreement with the building trades, supporting good paying jobs and workforce development for the next generation.

For more information and future updates, visit i-91i-691route15interchange.com.