Work on the Yambil Street upgrade Stage 3 has been delayed due to the discovery of water seepage in the underlying soil.
Works on Stage 3, from Ulong Street to Daines Street, commenced early December 2020 with the removal of existing bitumen and kerb and gutter, the excavation of soil under the bitumen seal, in accordance with the initial geotechnical investigation report, installation of a new water main and additional sewer works. Following the removal of the subgrade soil in the travel lane, water seepage was detected and additional geotechnical investigations were undertaken.
The results of the additional soil tests confirmed water seepage and it was recommended that excavation and removal of additional soil below the road pavement be undertaken and replaced with more suitable material in addition to subsoil drainage being installed along both sides of the Stage 3 Yambil Street project.
At the Ordinary Meeting on Tuesday night, Council approved the variation to the contract for Yambil Street Upgrade Stages 3 and 4 as submitted by B & C Plumbing for the removal of unsuitable material and replacement with "select fill" and installation of sub-soil drainage in line with geotechnical recommendations.
Griffith Mayor, Councillor John Dal Broi, said the discovery meant unavoidable delays.
"It is extremely unfortunate and we do feel for the businesses affected, but this is something that is beyond our control," Cr Dal Broi said.
"Yambil Street has certainly presented many unexpected challenges, this is just another that we have to deal with.
"I want to thank our community and in particular Yambil Street businesses for their ongoing support and patience. Please know that we are working to ensure that the end result is worthwhile."
