MaineDOT, Cianbro Corp. Begin Major Bangor I-95 Bridge Replacement Project

Why It Matters

The upgrades will boost safety and capacity on Maine’s primary interstate corridor, reducing long‑term congestion and supporting regional commerce. The $53.8 million investment also generates construction jobs and modernizes critical infrastructure.

Key Takeaways

• MaineDOT began median clearing for I‑95 bridge project on April 6.
• Single‑span bridge will replace two Stillwater Ave overpasses, keeping traffic flow.
• Kenduskeag Ave bridge closure slated for 2027, lasting eight months.
• Cianbro Corp awarded $53.8 million contract for the three‑year project.
• Detour route safety upgrades start later this year on Valley Avenue.

Pulse Analysis

I‑95 is the backbone of Maine’s transportation network, carrying millions of vehicles annually across the state’s rugged terrain. Decades of wear have left key structures, such as the Stillwater Avenue overpasses, in need of replacement. By consolidating two bridges into a single, modern span, MaineDOT aims to streamline maintenance, improve structural resilience, and accommodate future traffic growth. The median crossover design ensures that most commuters experience only brief, predictable delays, preserving the corridor’s reliability during construction.

The project’s second phase targets the Kenduskeag Avenue bridge, a critical connector that will receive a shorter, higher‑clearance structure. Opting for a full closure, rather than staged work, shortens the overall construction timeline and minimizes repeated disruptions. An eight‑month detour, beginning in 2027, will be supported by safety upgrades along Valley Avenue, ensuring smooth traffic flow for both local businesses and commuters. These design choices reflect a broader trend in infrastructure projects that prioritize long‑term efficiency over short‑term convenience.

Beyond engineering benefits, the $53.8 million contract awarded to Cianbro Corporation injects significant capital into Maine’s economy. The multi‑year effort will create hundreds of construction jobs, stimulate local suppliers, and reinforce the state’s commitment to modernizing its transportation assets. As New England’s freight corridors become increasingly strained, the upgraded I‑95 segment positions Maine to better serve regional logistics, tourism, and commuter markets, laying groundwork for sustained economic growth through 2029 and beyond.