Six of 13 identified Hwy 400 sound barriers deemed not feasible

Following up on a council motion last November for the engineering department to provide information about installing sound barriers along Highway 400 adjacent to residential areas, a memo to council advises that barriers for six of 13 identified areas have been deemed not feasible.
The highway falls under the jurisdiction of the Ministry of Transportation (MTO), and as part of the environmental process for the widening of the highway the ministry completed noise assessments for an area one kilometre south of Highway 89 to the Highway 11/400 junction.
The assessment identified 13 possible areas for sound barriers. Three were determined to be not economically feasible, while three were found to be not technically viable.
“The identified locations are then investigated to determine if noise mitigation measures within the right of way (ROW) would achieve a 5 dBA noise reduction or greater. In locations where the noise reduction is achievable, noise mitigation measures are reviewed based on the following criteria: a) Technical feasibility – the constructability of the mitigation with regards to safety, topography, and the ability to achieve a 5 dBA reduction, among other concerns; b) Economic feasibility – the cost / benefit analysis of the mitigation; and, c) Administrative feasibility – the ability to locate the noise barrier on publicly owned lands such as the MTO ROW,” writes Bala Araniyasundaran, project engineer.
The assessment “identified noise barriers for the majority of residential areas that are abutting the highway corridor … these recommendations will be subject to further assessment as part of detailed design.”
To read the staff report and view the locations of noise barriers, click here. 

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