McKenzie Interchange Network Analysis  

Project Details: 
An interchange has been proposed for the intersection of Trans Canada Highway and McKenzie Avenue/Admirals Road in Saanich, BC.  Adept was retained by the lead design consultants to identify the effects on the intersection, the main corridors (TCH and McKenzie/Admirals), adjacent arterials, and the local networks for alternate interchange configuration options.  The CRD Regional Travel Demand Model, based on 2006 data and networks, was deployed and updated to reflect 2015 population, employment and road networks.  Link speeds, centroid connections, turn restrictions / penalties, and link delays were adjusted to better reflect current conditions.   The updated model outputs were then compared to the most recent available highway and arterial traffic volume counts to validate the reliability of the updated model.  A least square error of nine percent between estimated link volumes and traffic counts was achieved which is considered very good according to industry standards.   A 2018 post-construction model was developed by estimating population and employments growth by Traffic Analysis Zone using projections provided by the CRD.  The 2018 model was then deployed to assess alternate interchange configurations and effects of the various option on the broader road network.  
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The project was done on time and on budget