UBC Undergraduate Research

Corridor Redesign of Chancellor Boulevard Chao, Xi; Chen, Wenzhan; Jin, Yanshan; Lu, Zheyu; Xue, Zixuan; Yang, Ruifang


According to the request from UBC SEEDS, Alpine Breeze Engineering Consulting Ltd. has redesigned Chancellor Boulevard in order to facilitate traffic flow and improve safety of all road users, while accommodating increasing demands due to population growth. Our design focuses on the specified project corridor, which starts from Acadia Road and runs eastwards to Drummond Road. This report introduces the finalized design option in details and provides comprehensive rationales together with drawings for clear demonstration of design components and structures. Our final planning consists of both changes on road geometry and construction of an additional road-crossing underpass for pedestrians and cyclists. The existing layout of 2 lanes per direction has been kept with lane widths adjusted to 3.5 meters. Bicycle lanes along roadsides are integrated together with pavements to form a shared walkway for both pedestrians and cyclists. Volume sensors will be used to activate the control of traffic signal at intersection of Hamber Road with Chancellor Boulevard. Some other improvements are adjustments on gradient in order to accelerate drainage, installation of flexible posts at turnings, increased number of traffic signs and special paintings on road for speed control, installation of cats eyes for better night vision, as well as planting of vegetation on median. Drawings illustrating details are attached in Appendix E. The additional underpass was designed to locate at the intersection of Hamber Road and Chancellor Boulevard to provide a safe and efficient option for road crossing, while at the same time minimizing the disturbance on traffic flow. Detailed design drawings are included in Appendix E with overviews for entrances, lifts, retaining structures, storage tanks and drainage pumps, lighting, and vandal-proof equipment. Construction is scheduled to commence on May 1st, 2018 and be completed on September 9th. The whole project construction could be divided into 5 zones, with an overall duration of 17 weeks. The schedule is planned with the consideration that disturbance to traffic should be minimized by avoiding full closure to the road. A detailed construction schedule could be found attached in Appendix A. Information regarding to construction will be released online for public as well as to local communities, and transportation relevant departments several weeks in advance. There will also be interacting events include information sessions and open houses to obtain feedbacks from stakeholders and clients. Based on our finalized design, the detailed cost estimate is calculated to be 5.4 million, with road surface construction taking up to 3.6 million, and underpass construction sharing the rest 1.2 million with other costs such as permitting and maintenance. Detailed cost breakdown is enclosed in Appendix B for further reference. We are very pleased to provide SEEDS with an improved road and traffic system with better efficiency and experience with increased safety for all road users, as well as protecting the natural surrounding environment and ecosystem along Chancellor Boulevard. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”

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