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Lane Closure Alert: Modjeska Grade Road (May 30 - June 8, 2023)

Lane Closures

Modjeska Grade Road

Assessments for Future Improvements Project, Will Require Lane Closures

In preparation of a future project, OC Public Works will be assessing the location of underground utilities, referred to as “potholing,” which will require temporary lane closures.


The “pothole” where these investigations occur typically requires an opening of approximately 12 inches X 12 inches, with depth depending on the utility locations.

The purpose is to identify the locations of existing underground utilities, such as water, gas, sewer, electricity, phone/computer or other utility services in preparation for a future roadway and drainage improvement project.

These activities will require temporary lane closures and brief traffic stops. Flag personnel will be on-site to direct drivers. These lane closures will only occur over a period of eight days (no weekend days).

We are planning future improvements to Modjeska Grade Road to address the recurring stormwater drainage and roadway safety issues, including: pavement rehabilitation, installation of guardrails at key locations, assessing potential improvements to travel lanes and shoulders, constructing drainage ditches, curb and gutter along the roadway, replacing drain pipes and installing catch basins to adequately move stormwater. Potholing helps us identify underground utility locations that we need to consider when designing this project.


Two periods:
- Tuesday, May 30 through Friday, June 2 and;
- Monday, June 5 through Thursday, June 8, 2023
Working Hours: 9 a.m. — 3 p.m.

Schedule is subject to change. Possible for work to extend to no later than June 18 due to unforeseen factors.


At 23 locations along Modjeska Grade Road and near its intersection with Modjeska Canyon Road.

See PDF below for location map.


Shannon Widor
(714) 667-9759