10/30/2026
An update from BC Hydro their ongoing rockfall safety improvement work at Terzaghi Dam on Mission Mountain Road.
Attention Mission Mountain Road users ⚠️
Crews are working at Terzaghi Dam to improve safety around the rock face near the facility. Rock scaling is complete, and shotcrete work continues.
Where: Terzaghi Dam at the junction of Highway 40 and Mission Mountain Road, approximately 18 km from Shalalth, and 49 km from Lillooet.
When: Now until November 27, weather permitting.
Working hours: Seven days a week, 7 a.m. to 7 p.m. Work times may shift due to conditions.
Single-lane alternating traffic and intermittent closures will be in effect. Please plan ahead using Drive BC and expect delays.
Please reduce speed in the construction zone and follow the directions of traffic control personnel and posted signage.
We appreciate your patience and understanding. For more info, please contact us at [email protected].