The Most Dangerous Roads in California

Roads can gain a dangerous reputation for many reasons, from sharp curves and narrow lanes to high altitudes or areas with potential security risks. California, in particular, has several stretches of highway that stand out for their riskiness. Personal finance tech firm Moneygeek analyzed data from over 10,300 fatal accidents to determine the states most perilous roads. Their research also factored in deaths per mile, highlighting the exact segments where accidents are most concentrated.

Top Dangerous Routes in California

The most hazardous highway identified is the I-15. A 4.5-mile stretch between Hesperia and Cajon Pass recorded 4.2 fatalities per mile. The next two most dangerous sections are contiguous portions of I-80 in Berkeley and San Pablo, measuring five miles each. Berkeley saw 3 deaths per mile, while San Pablo experienced 2.6 deaths per mile.

Despite California boasting "more than 50,000 miles of good-quality highways and freeways," certain segments remain particularly risky due to mountainous terrain, heavy traffic, outdated infrastructure, and confusing intersections.

I-15 and the Cajon Pass

The I-15 stretches north from San Diego, connecting Los Angeles with Las Vegas and passing through Nevada, Utah, Idaho, and Montana. The most dangerous section is just outside central Los Angeles, winding through the Cajon Pass. Factors contributing to accidents here include heavy trafficoften exceeding 50,000 vehicles dailysteep grades, sharp curves, strong winds, fog, snow, and a high volume of commercial trucks. There is even a dedicated site, PainInThePass, tracking incidents along this route.

I-80 Through Berkeley

North of Oakland, the I-80s Gilman Street interchange is notorious for traffic confusion. Multiple entry points, unclear right-of-way, and complex merging challenges make it one of the most dysfunctional intersections in the U.S., according to local reports. Roundabouts are in place to help traffic flow, but driver unfamiliarity can reduce their effectiveness.

I-80 Through San Pablo

Another hazardous I-80 segment lies just north of Berkeley, near San Pablo. Severe congestion around San Pablo Dam Road, insufficient pedestrian and bicycle infrastructure, and persistent traffic issues have contributed to the areas dangerous reputation. An anti-congestion project has been planned for nearly a decade, with costs projected in the hundreds of millions.

Author: Sophia Brooks