Attachment: Project Summary C-018 Six Mile Road improvements
Detailed project description and cost/benefit analysis for the Six Mile corridor improvements.
Project Summary
Priority: Strategic
Project Name: Six Mile Road improvements Project ID: 2-2-11105-310 CC as noted / 1-2-03200-630 CC320-02
Submitted by: Ivan Leung, Director of Engineering
Executive Summary
This project was included in the 2022-2026 Financial Plan. Since 2019 a traffic study and public engagement was completed to explore traffic mitigation measures on the corridor. While cost estimates were established in the 2022-2026 Financial Plan, the latest revised estimates indicate construction costs for both the BC Hydro duct work and the roundabout installation to be significantly higher than initially projected. To maintain sustainable budgeting for this program the phasing is proposed to be adjusted as follows:
- 2023 - Construction of BC Hydro duct work. The costs have significantly increased to approximately $300,000 from $100,000. Carryover from last year due to late BC Hydro design (CC 1260)
- 2023 – Roundabout construction. The revised cost estimate for the roundabout construction, including contract administration and inspection, is $2,385,000 (from $1,555,500). A portion of the $15,000 specified for the roundabout design is carried over from 2022 to finalize the tender documents. (CC 1252)
- 2023 – Conceptual review of corridor road cross-section to determine pedestrian and cycling connections ($5,000). (CC 1168)
- 2024 – Crosswalk at or near Damon Drive ($75,000) - pending MoTI approval. (CC 1257)
- 2024 – As determined by corridor lighting study, additional lights are required for the Six Mile corridor; design and implementation scheduled following roundabout construction ($115,000) (CC 1259)
Business problem and opportunity
A 2017 traffic study reviewing the traffic volumes on Six Mile Road confirmed that the installation of a roundabout would improve traffic at the Atkins Road intersection significantly and would benefit Six Mile Road overall.
Proposed project objectives
The Six Mile corridor is a complex area and with each solution there is the potential to impact various raised issues. The public engagement process narrowed the focus down to the following 5 items:
- Reduce vehicle travel time in the corridor (31%)
- Improve pedestrian safety (11%)
- Vehicle traffic calming (27%)
- Improve cycling safety (2%)
- Improve vehicle driver safety (20%)
Staff is proposing a phased approach to various treatments within the corridor (see attached).
Business risks
The phasing of the civil and BC Hydro works was done to mitigate the BC Hydro costs. If the roundabout project was to be delayed further, then it is likely that the BC Hydro costs would increase. Design and construction must still require approval from the Ministry of Transportation and Infrastructure as the works are within their jurisdiction.
Proposed sources of funding
Capital: Community Works Fund, DCCs to extent available (max $467,775 roundabout only), Casino revenue Operational: Taxation
Costs and benefits
| Costs | FY1 | FY2 | FY3 | FY4 | FY5 | 5-year Total |
|---|---|---|---|---|---|---|
| Capital | 2,690,000 | 190,000 | 2,880,000 | |||
| Operational | 500 | 3,500 | 5,000 | 5,000 | 5,000 | 19,000 |
| Total | 2,690,500 | 193,500 | 5,000 | 5,000 | 5,000 | 2,899,000 |
Recommendation
THAT the Committee recommend the 2023-2027 Financial Plan include Six Mile Rd improvements. Capital costs funded by Community Works fund, DCCs, and Casino revenue with ongoing operational costs funded by taxation.
Additional Information
Six Mile Corridor-Mitigative solutions
Recommendations were examined in terms of approximate monetary costs to implement over a measure of anticipated impact (or benefit) with regards to the three grouped objectives listed below as determined by the public engagement process.
Impact score-were calculated as follows:
- Points (out of 5) for improvement to traffic flow during peak periods;
- Points (out of 5) for traffic calming impact; and,
- Points (out of 5) for improvement to non-vehicle transportation mode impact.
The lowest Cost/ Impact values therefore represent best returns from a cost perspective. These values are intended to be used as general guidance and also for comparative analysis.
Table 6.1: Cost/ Impact Analysis of Described Options and Recommendations
| YEAR RECOMMENDED | CORRIDOR SEGMENT | LOCATION | ACTION | COST | IMPACT VEH, CALM, NON-VEH | COST (1,000)/ IMPACT |
|---|---|---|---|---|---|---|
| 2020 | 3 | Chilco/ Nursery & Six Mile Intersection | 2) Convert to 4-Way Stop Control | $50,000 | 4, 5, 3 =12 | 4 |
| 2022 | 5 | Atkins & Six Mile Intersection | 7) Roundabout | $900,000 | 4, 4, 3 =11 | 64 |
| N/R | 3 | Chilco/ Nursery & Six Mile Intersection | 3) Traffic Signal | $545,000 | 4, 3, 3 = 10 | 55 |
| 2025 | 4 | Corridor Cross Section | 6) 100 m Two Curb Alteration | $565,000 | 0, 3, 5 =8 | 71 |
| N/R | 5 | Atkins & Six Mile Intersection | 8) Traffic Signal | $545,000 | 2, 3, 3 = 8 | 68 |
| 2025 | 4 | Corridor Cross Section | 5) 100 m One Curb Alteration | $260,000 | 0, 3, 4 =7 | 37 |
| 2020 | 3 | Chilco/ Nursery & Six Mile Intersection | 4) Improve Existing Pedestrian Crossing | $30,000 | 0, 3, 3 =6 | 5 |
| 2020 | 2 / 3 | Between Hwy Off Ramp and Chilco | 1) Southbound Radar Speed Reader | $5,000 | 0, 4, 1 =5 | 1 |
| 2020 | 8 | Island Highway & Six Mile Intersection | 14) Traffic Signal Timing Plan Optimization | $5,000 | 4, 0, 1 = 5 | 1 |
| 2021 | ALL | Corridor Study | 15) Improve Corridor Lighting per 100 m | $40,000 | 0, 1, 4 =5 | 8 |
| 2021 | 6 | At or near Damon | 9) Special Pedestrian Crossing | $75,000 | 0, 2, 2 =4 | 13 |
| 2022 | 6 | At or near Damon | 10) Bus Stop Improvements | $25,000 | 0, 0, 2 =2 | 13 |
| 2022 | 6 | South of Damon | 11) “Use Roundabout Ahead for Turnaround” sign. | $1,000 | 0, 1, 0 =1 | 1 |
| 2020 | 6 | At Damon Drive | 12) “No Exit” sign. | $1,000 | 0, 1, 0 =1 | 1 |
| 2021 | 5 | Atkins & Six Mile Intersection | Roundabout | $100,000 | Not Part of Study |