Greenwich is one of Connecticut’s busiest towns, with major commuter routes, local shopping districts, and neighborhood roads all intersecting in a relatively small area. Unfortunately, this also means Greenwich has several roads and intersections where crashes occur frequently—and often with serious consequences. Crash data and police reports highlight the following as the most dangerous roadways in town.

Major Routes with High Crash Rates

• U.S. Route 1 (East and West Putnam Avenue)
  Route 1 is the most crash-prone roadway in Greenwich and one of the deadliest in the state for pedestrians. Heavy traffic, congestion, and limited safe crossings make it particularly hazardous.
• Interstate 95 (I-95)
  I-95 through Greenwich is notorious for congestion and bottlenecks, which frequently lead to crashes. Some of the worst traffic backups in Connecticut occur here. In August 2025, a tragic incident took place when a construction worker was struck and killed on I-95 in Greenwich.
• Greenwich Avenue
  Hundreds of crashes have been reported on Greenwich Avenue over the past decade, especially at intersections. Since 2020, when police stopped directing traffic in this area, residents and business owners have described conditions as chaotic and dangerous.
• Merritt Parkway (Route 15)
  Although many crashes on the Merritt Parkway are minor, its narrow lanes, outdated design, and heavy traffic create ongoing risks. Certain interchanges are particularly dangerous.
• Other High-Crash Corridors
  In addition to these major routes, several other Greenwich roads see frequent accidents, including:
  • Sound Beach Avenue
  • North Street
  • Arch Street
  • Lake Avenue
  • Byram Road

Notorious Intersections

• Greenwich Avenue and Railroad/Bruce Park Avenues – The most dangerous intersection in town, with 82 crashes between 2014–2024.
• Greenwich Avenue and Elm Street – Despite a 2021 redesign, this location still sees high crash numbers.
• Putnam Avenue and Mason Street – Known for congestion and aggressive driving behaviors.
• I-95 Exit 5 and Putnam Avenue – A dangerous merge area with frequent collisions.
• Cos Cob Intersection – Local concerns have led to safety improvement plans for this spot.

Factors Contributing to Accidents

The causes of crashes in Greenwich stem from a mix of roadway conditions, traffic patterns, and driver behavior:

• Heavy commuter traffic and congestion on I-95 and Route 1.
• Pedestrian vulnerability, particularly along Route 1.
• Speeding, distracted driving, and unsafe lane changes.
• Complex merges and high-traffic intersections with limited visibility.

Stay Alert, Stay Safe

Whether driving on I-95, traveling along Route 1, or navigating Greenwich’s busy intersections, extra caution is essential. Slowing down, paying attention, and using designated crossings can help reduce the risk of accidents.

Protect Yourself

If you or a loved one has been injured in a Greenwich car accident, you may be entitled to compensation for medical bills, lost wages, and pain and suffering. The experienced personal injury attorneys at Hastings, Cohan & Walsh, LLP are here to help.

Call us today at 203-438-7450 for a free consultation, or visit catherinev2.sg-host.com to learn more about protecting your case.