Since the project area is concentrated on the dam itself, there will be a closure on Lake Drive between the Crestline Sanitation District and Edelweiss Drive beginning in July 2018 through the remainder of the project period. During this time, motorists will be detoured around the south side of the lake, via San Moritz Drive and San Moritz Way.

San Moritz Way has been permanently widened to allow for two-way traffic. San Moritz Way is a short connector road between Lake Drive with San Moritz Drive, on the east side of the lake. It will be used to shorten detour routes and minimize construction traffic on roads within Crestline. Movement of materials and equipment is not expected to disrupt recreation activities or cause significant delays for residents or motorists.

Finally, there will be a periodic and temporary lane reduction at the mouth of Edelweiss Drive from Lake Drive. Access for residents on Edelweiss will be accommodated throughout construction but could be intermittently disrupted.