Facilities & Transportation Committee
February 1, 2023

Lake Chabot Road Initial Storm
Damage Assessment
Lake Chabot Road
Severe erosion at two separate locations
LCR1
Stability to
above
structures
Debris &
boulders
caused LCR
to be
closed to
traffic
LCR1
Temporary
plastic
sheeting
placed to
prevent
further
erosion
LCR1
Road Profile
near LCR 1
LCR 1 - Repair Scheme
▪ Consultant to prepare repair plans
▪ Rebuild using much larger rock boulders
▪ Increased repair width
▪ Improvements at upper slope to convey storm water away Estimated cost:- $400K -$600K
Potential Schedule:- May-June 2023
LCR2
Downslope
view
LCR2
Erosion
immediately
adjacent to
the roadway
edge
LCR2
LCR2
Temporary plastic
sheeting placed
to prevent
further erosion
Road Profile
LCR 2
LCR 2 - Repair Scheme
▪ Stabilization based on pre-storm design project (A-line) ▪ Consultant to reevaluate and update design details
▪ Increased repair area due to slide damage
▪ Improvements at road edge to convey storm water away
Estimated cost:- $4M
Potential Schedule:- August-October 2023
Lake Chabot Road Reopening
▪ Consultant to evaluate if safe to reopen before both
repairs completed
▪ Repairs will require road closure for construction
activities