Lake Gregory Dam Construction Kick-Off Event Planned for Wednesday, March 28th

By Susan A. Neufeld

Crestline, CA – Construction for the Lake Gregory Dam Improvement Project is now underway. To  celebrate this milestone, the County of San Bernardino invites residents to attend a construction kick-off Celebration.

The celebration will be held on Wednesday, March 28, 2018, at  10 a.m. on the crest of the Lake Gregory Dam, directly adjacent to the Crestline Sanitation District Office (24516 Lake Drive, Crestline).

More details to follow, but mark your calendars and plan to attend!


The Lake Gregory Dam Improvement Project is underway. Trees and vegetation with in the project area have been cleared and, within the next few weeks, motorists will encounter traffic modifications on Lake Drive, over the dam crest, to facilitate construction-related activities.

“The improvement work on the Lake Gregory Dam is on track with the project timeline, and in the past week, the Crestline community has seen major headway,” said San Bernardino County Supervisor Janice Rutherford. “We sill continue to work with members of the Lake Gregory Improvement Committee to keep residents informed about the project and any impacts to the community.

The traffic impact area/construction zone along Lake Drive is between the Crestline Sanitation District Office and Edelweiss Drive. Signage will alert drivers to a lane shifts and other potential lane closures throughout the period of construction. When necessary, traffic may be reduced to a single lane or the road even closed with electronic signals, flaggers and detour signage will direct traffic and indicate detours.

Initially, a temporary concrete barrier will be installed along the edge of both lanes of traffic on Lake Drive. The traffic adjustment will narrow lanes and shift them slightly, but will still allow for two-lane traffic for the time being. The Lake Drive parking areas, along the road shoulder at the dam, will no longer be available, as the area is needed for traffic circulation and construction-related activity. The upper roadside walking path may end up being closed to public access during construction, but an alternative lakeside route will still be available.

In the coming weeks, the public restrooms on Lake Drive will also be removed, in preparation for the continued work on the buttress.

The construction schedule is Monday through Friday from 7 a.m. to 5 p.m. Work will continue for approximately one year and project completion is expected in the first quarter of 2019.

With the removal of trees and overgrown underbrush, the boundaries and crest of the dam are now clear and distinguishable. Trees are being cut to just above ground level, leaving stumps that will be removed during the excavation of the existing rock riprap layer to expose the underlying dirt layer of the dam. The underlying dirt embankment will serve as the foundation for establishment of the new, reinforced buttress.