Route 15 Interchange Improvements in Meriden, Connecticut (original) (raw)

Construction has officially begun on a major upgrade to the I-91/I-691/Route 15 interchange in Meriden, Connecticut, following a ceremonial groundbreaking attended by state transportation officials, federal partners, Parsons Corporation, and local leaders.

The project will overhaul one of the state’s key highway junctions, a heavily traveled connection within Connecticut’s broader transportation network that carries regional traffic across New England and the wider Northeast corridor. Officials say the work will address long-standing congestion points and improve overall traffic flow through the interchange.

The Connecticut Department of Transportation is leading the development, with Parsons Corporation serving as the lead design consultant and engineer of record. In this role, the company is responsible for final design work as well as providing ongoing technical support during construction, coordinating closely with state engineers and project stakeholders.

Transportation officials describe the initiative as a phased infrastructure program designed to modernize the interchange while maintaining traffic movement during construction. The work is expected to focus on improving safety conditions, reducing bottlenecks caused by merging and weaving traffic patterns, and enhancing long-term reliability for both commuter and freight movement.

Cost

The approximately $721 million project represents one of the larger transportation investments in the region in recent years. Once completed, it is expected to improve connectivity along the I-91 corridor, a critical route for passenger travel and goods movement through Connecticut and beyond.

According to Parsons, the firm is applying its broader highway and infrastructure experience to support the project’s delivery, including managing design coordination and addressing construction-phase challenges as they arise. The company has previously worked on large-scale transportation projects involving highways, bridges, and traffic management systems across the United States and internationally.

The interchange improvements are expected to be delivered in multiple phases over several years, with construction continuing while traffic operations are maintained along the corridor.

Additionally, Connecticut continues to advance major transportation infrastructure upgrades, including the ongoing Interstate 95 bridge replacement project in West Haven. Together with the I-91/I-691/Route 15 Interchange Improvement Project in Meriden, these developments reflect the state’s broader push to modernize critical highway corridors, improve safety, and strengthen long-term mobility across key freight and commuter routes.

Fact Sheet: I-91/I-691/Route 15 Interchange Improvements Project

Location: Meriden, Connecticut, USA
Cost: $721 million
Lead Agency: Connecticut Department of Transportation (CTDOT)
Design Lead: Parsons Corporation (Engineer of Record & Prime Design Consultant)

Key Goals

Reduce congestion and traffic bottlenecks
Improve safety at merging and weaving points
Enhance regional mobility for commuters and freight
Maintain traffic flow during phased construction

Scope

Full interchange modernization in multiple phases
Final design and construction-phase engineering support
Coordination between CTDOT, Parsons, and federal partners

Status

Groundbreaking completed
Construction underway
Multi-year delivery program

Significance

The project strengthens a critical interstate corridor supporting regional travel and goods movement across Connecticut and the wider Northeast network.