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MassDOT shows four alternatives for the Route 6 rotary in Eastham and Orleans; staff seek public input
Summary
MassDOT presented an alternatives analysis for the Route 6/Rock Harbor Road rotary, narrowing 17 concepts to four finalists (signal+roundabout, two double‑roundabout options, and a rotary retrofit), with cost estimates ranging from about $14 million to $17 million for the top concepts and a larger high‑end range for bridge options; an in‑person open house is planned for March.
MassDOT on behalf of the state presented preliminary alternatives for the Eastern Orleans rotary at Route 6 and Rock Harbor Road, describing a resilience-focused evaluation that narrowed 17 initial concepts to four preferred options and planning public engagement for spring.
Doug Johnson, MassDOT program manager for mobility and resiliency capital programs, said the project was initiated following the Cape Cod Commission’s low‑lying roads study that identified the rotary area as vulnerable to future flooding. MassDOT worked with the project design team and Woods Hole Group on tidal and storm-surge modeling, deploying tidal-gauge stations and projecting future water-surface elevations for 2030, 2050 and 2070.
Connor (design team) summarized the technical screening: the team examined 17 preliminary concepts including grade-separated interchanges, roundabouts, signalized intersections and nature-based berms, then used a matrix of climate‑resilience, complete‑streets and environmental criteria to identify four top alternatives: a split‑intersection option (signal + three‑leg roundabout), two versions of double‑roundabout configurations, and a retrofit of the existing rotary. Top alternatives include new shared‑use path connections to the Cape Cod Rail Trail and differ in the degree they could be raised to meet future storm elevations. High-level cost estimates for concepts with major structures ranged from about $10 million up to $75 million; the four top concepts were estimated at roughly $14 million–$17 million.
MassDOT emphasized public outreach: an in‑person open house is planned for March and staff said they will solicit feedback from emergency‑service chiefs about evacuation routes and operational needs. Members and attendees urged broad public engagement across affected towns and requested freight and seasonal peak counts be considered in final evaluations.
Next steps: MassDOT plans additional stakeholder engagement this spring, further engineering and selection of a preferred alternative before design; construction is likely in the early 2030s depending on funding and permitting.
