TRAFFIC ADVISORY 
One-Way Traffic Controls on State Route 140 for September 21, 2026 

September 19, 2026 – Mariposa County – The California Department of Transportation (Caltrans) will have traffic controls in place for the following construction and maintenance activities on State Route 140 (SR-140) in Mariposa County next week. Work is scheduled to occur as follows:

State Route 140

• Conventional highway traffic break at Fourth Street for sing/banner work on Monday, September 21, 2026, from 9:00 a.m. to 2:00 p.m.

Motorists should expect 5-to-10-minute delays and use alternate routes whenever possible. All work is scheduled to occur as listed but is subject to change due to traffic incidents, weather, availability of equipment/materials, and construction-related issues.

For the safety of workers and other motorists, please Be Work Zone Alert.

For the latest road information, visit quickmap.dot.ca.gov & dot.ca.gov. 

Source: Caltrans