The Deadliest Intersections in the U.S. and Colorado: A Public Safety Study
Published by Mandelaris Law | May 2025
Intersections are among the most dangerous points on American roadways. According to the Federal Highway Administration (FHWA), over 50% of serious crashes and nearly 25% of all traffic fatalities occur at or near intersections.
This comprehensive study by Mandelaris Law — based on a synthesis of national and Colorado-specific crash databases — identifies the most dangerous intersections across the country and in key Colorado cities. Our team analyzed data from the Fatality Analysis Reporting System (FARS), the National Highway Traffic Safety Administration (NHTSA), and the Colorado Department of Transportation (CDOT).
Our goal is to provide a data-driven public safety resource for drivers, policymakers, transportation engineers, and legal professionals. This thesis-style post also aims to serve as a citation-worthy source for journalists, public health experts, and municipal planners concerned with intersection safety and urban design.
Why Intersections Matter in Traffic Safety
According to the FHWA, more than 50% of all serious collisions and about 25% of all traffic fatalities in the United States are attributed to intersections. Supporting research from the NHTSA’s traffic crash statistics confirms that poor visibility, inadequate signal timing, and distracted driving at intersections increase crash risk.
- Red light violations
- Improper turns
- Pedestrian conflicts
- High-speed side-impact collisions
Data Methodology
This study relies on publicly available data from:
- Fatality Analysis Reporting System (FARS)
- National Highway Traffic Safety Administration (NHTSA)
- Colorado Department of Transportation (CDOT)
Top 5 Deadliest Intersections in the United States (2018–2023)
| Intersection | Location | Fatal Crashes | Primary Cause |
|---|---|---|---|
| US 1 & East Jersey Street | Elizabeth, NJ | 9 | Red-Light Running |
| SR 129 & Lalor Street | Trenton, NJ | 9 | Signal Violations |
| Flamingo & Las Vegas Blvd | Las Vegas, NV | 8 | Pedestrian Strikes |
| Roosevelt Blvd & Adams Ave | Philadelphia, PA | 7 | Speeding |
| Imperial Hwy & Vista Del Mar | Los Angeles, CA | 7 | High-Speed Merging |
Deadliest Intersections in Colorado (2020–2023)
Denver
- Colfax Ave & Speer Blvd: 4 fatalities — high traffic & poor visibility
- Quebec St & MLK Jr Blvd: 2 fatalities — frequent turning collisions
- 6th Ave & Lincoln St: 3 fatalities — complex signal phasing
Colorado Springs
- I-25 & S Nevada Ave: 1 fatality — high-speed merging area
- Garden of the Gods Rd & Centennial Blvd: 1 fatality — signal timing issues
- S Academy Blvd & E Fountain Blvd: 1 fatality — pedestrian crossing risk
Recent Incident Highlights Ongoing Intersection Dangers
In a striking example of local traffic hazards, 9NEWS recently reported on a Denver family whose home was hit by vehicles five times in just 16 months. The crashes are linked to a nearby dangerous intersection with poor visibility and high-speed entries. This case has reignited community concern over street design, enforcement, and the role of city planning in protecting lives and property.
Interactive Map: Explore Dangerous Intersections
Root Causes of Intersection Fatalities
- Signal Violations: Red-light running remains a top factor (IIHS Report)
- Driver Behavior: Aggressive, distracted, or impaired driving
- Inadequate Infrastructure: Outdated signals, unclear lane markings
- Pedestrian Risks: Poor crosswalk design and visibility
Policy Recommendations
- Automated enforcement: red-light cameras
- Converting high-risk areas to roundabouts (FHWA Study)
- Adding leading pedestrian intervals (LPIs) and curb extensions
- Adopting Vision Zero plans — such as Denver’s Vision Zero initiative
Conclusion
Intersections are high-stakes environments, especially in high-traffic urban corridors. This study by Mandelaris Law underscores the need for data-informed traffic planning, stronger pedestrian protections, and accountability for reckless behavior on our roads.
For further reading and public data access, visit:
Injured at a Dangerous Intersection? Contact Mandelaris Law
If you or a loved one has been seriously injured in a crash at a dangerous intersection in Colorado, you may be entitled to compensation. Mandelaris Law is committed to advocating for victims of traffic negligence, holding reckless drivers and municipalities accountable, and helping clients recover what they deserve.
We offer free consultations and are available to discuss your case 7 days a week.