Mariposa County Pulse

Ferguson Slide Road Fix Underway

Ferguson Slide Road Fix Underway

Key Questions

What is the Ferguson Slide project on Highway 140?

The project involves building a permanent concrete rock shed to address chronic rockslides on the road to Yosemite. It is a $387 million effort tackling a 20-year problem, with initial concrete already poured.

How much does the Highway 140 rock shed construction cost?

The project has a total budget of $387 million. It focuses on a long-term solution for the Ferguson Slide area affecting travel to Yosemite.

What traffic impacts are expected from the Ferguson Slide work?

Shoulder closures are in effect from July 19-25, leading to 5-10 minute delays with one-way traffic control. Travelers should plan for longer trip times according to the Caltrans advisory.

The rockslide-riddled road to Yosemite (Highway 140) is getting a permanent concrete rock shed. The $387 million project addresses a 20-year problem, with first concrete poured. A Caltrans traffic advisory (July 17) extends shoulder closures from July 19-25 with 5-10 minute delays, impacting travel times.

Sources (2)
Updated Jul 25, 2026
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