A slumped section of Promontory Road will be re-opened to traffic every evening for the next week while emergency road repair is underway.
Late Thursday, city officials released the news that alternating single-lane traffic will be in effect after 4:30 p.m. on the temporary gravel roadway, between Sylvan and Extrom Roads.
Motorists are asked to use caution and drive slowly through the area.
The 70- to 80-metre section of damaged road at the top of the hill will be closed to all traffic for construction between the hours of 8 a.m. to 4:30 p.m. until Jan. 28, said officials.
It will be open all day Sunday.
Some Ryder Lake residents who are now forced to detour around the site in the daylight hours told The Progress they are a little frustrated with the inconvenience.
A six- to eight-inch slump caused by "deep soil failure" took out a chunk of the roadway on Monday morning. The section they have to fix cracked along the painted line.
Everyone who lives on either Extrom Road or Thornton Road is affected if they use Promontory Road. That accounts for at least 30 households, and maybe 100 people in all are impacted by the daily detours.
On Monday, an equipment operator from Strohmaier's Excavating was hired to get the road repair underway, and the city commissioned geotechnical engineering firm, Levelton Consultants, to get the the bottom of the road failure incident.
Drilling tests by the geotechs confirmed the slump was caused by "deep soil failure" which could not have been caused or prevented by any road work done at the surface.
jfeinberg@theprogress.com