TRAFFIC ADVISORY 
One-Way Traffic Controls for March 29 - April 4, 2026 

March 27, 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 49 (SR-49), SR-132, & SR-140 in Mariposa County next week. Work is scheduled to occur as follows:

STATE ROUTE 49

• One-way traffic control from Penon Blanco Road to Shilling Road for traffic signal work beginning Wednesday, April 1, through Friday, April 3, 2026, from 6:00 a.m. to 4:00 p.m.
• One-way traffic control from Shilling Road to Crown Lead Road for utility work on Thursday, April 2, 2026, from 8:00 a.m. to 4:00 p.m.
• One-way traffic control from County Road to Penon Blanco Road for utility work beginning Thursday, April 2, through Friday, April 3, 2026, from 7:00 a.m. to 3:00 p.m.

STATE ROUTE 132

• One-way traffic control just west of State Route 49 / Coulterville for drainage work beginning Wednesday, April 1, through Friday, April 3, 2026, from 6:00 a.m. to 4:00 p.m.

STATE ROUTE 140

• One-way traffic control from Colorado Road to Crane Creek for drainage work beginning Monday, March 30, through Friday, April 3, 2026, from 8:30 a.m. to 2:30 p.m.
• One-way traffic control from South Incline Road to Foresta Road for barrier installation work beginning Wednesday, March 25, through Thursday, March 26, from 7:00 a.m. to 5:30 p.m., and Friday, March 27, 2026, from 7:00 a.m. to 4:00 p.m.

Motorists should expect 5-10 minute delays and use alternate routes whenever possible. This work is scheduled to take place as listed, but is subject to change due to traffic incidents, weather, availability of equipment, and/or 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