Five Creeks Stormwater Flood Protection Project
Traffic & construction update for April 4 to 10
For safety reasons, the intersection of Benbow Road and Westmount Road will be closed at all times (this means weekdays, weekends and evenings). The closure of this intersection is in place until further notice. At this time we are not certain of the exact date it will re-open.
To ensure everyone’s safety, this intersection can not remain open. Emergency vehicles will have access through this intersection at all times.
ACCESS UPDATE
New timeline: Highway 1
- We anticipate construction along Westmount Road to be complete by late-April 2020 and Highway 1 access via Westmount Road to be restored at that time.
New timeline: Between Thompson Place and Benbow Road
- We anticipate construction along Thompson Crescent from north of Thompson Place to Westmount Road and along Westmount Road between Thompson Crescent to Benbow Road will be complete by late-April 2020 and access restored at that time.
ACCESS ROUTES
Get to where you need to go, safely. Detour signs are in place to help guide travellers.
Access for residents of Westmount Road (between Benbow Road and Rockview Place)
- This area is situated in the current construction zone, therefore, only local residents and their visitors are permitted in and out of this portion of Westmount Road. To avoid the full intersection closure at Benbow Road and Westmount Road, local traffic can access this portion of Westmount Road via Westridge Avenue only.
Access for residents of Westmount Place
- This street is situated in the current construction zone, therefore, only local residents and their visitors are permitted in and out of Westmount Place. To avoid the full intersection closure at Benbow Road and Westmount road, local traffic can access Westmount Place via Mathers Avenue only.
Access to Benbow Drive, Spencer Drive, Spencer Place, Spencer Court
- To avoid the full intersection closure at Benbow Road and Westmount road, access to Spencer Drive, Spencer Place, Spencer Court allowed via Gisby Avenue only.
Access to Thompson Crescent and Thompson Place
- To avoid the full intersection closure at Benbow Road and Westmount road, access will be via Mathers Avenue only.
Pedestrian access
- Pedestrian access will be maintained along sidewalks of Thompson Crescent and Westmount Road, however, pedestrians will be held at either end of the work zone until it is safe to pass through the worksite.
PROJECT WORKS WILL CONSIST OF THE FOLLOWING:
New this week (April 4–10)
- Minor restoration works along 31st Street from Dickinson Crescent to Mathers Avenue, along Mathers Avenue between 31st Street to Thompson Crescent, and along Thompson Crescent from Mathers Avenue to Thompson Place. Expect intermittent traffic delays.
- Paving works along Westmount Road between 3220 to 3330 Westmount Road
Ongoing work that continues
- Storm diversion and associated infrastructure construction along Westmount Road between north of Thompson Place and Rockview Place
- Final restoration works south of Marine Drive along 31st Street
- Sidewalk restoration at the southeast corner of Marine Drive and 31st Street. Expect one day of single lane alternating traffic
Frequently asked questions
The District has received calls and emails from concerned residents looking for more information or clarification of existing information on the Five Creeks Stormwater Flood Protection Project. We'd like to address those questions.
View frequently asked questions
What are we doing?
In 2013, the District of West Vancouver adopted an Integrated Stormwater Management Plan (ISMP) to address concerns of overland flooding within the watershed area referred to as the Five Creeks, for the benefit of both existing and future neighbourhoods below and above the Upper Levels Highway. The name Five Creeks comes from the fact that the watershed contains Pipe, Westmount, Cave, Turner, and Godman Creeks.
This plan calls for a stormwater pipe to run through the Westmount and Altamont neighbourhoods from north of the Upper Levels Highway down to the Burrard Inlet at the foot of 31st Street.
The new stormwater pipe will address concerns related to flooding and erosion by diverting excess stormwater out of the creeks during extreme weather events, safely conveying the flow into the ocean.
The project entails the construction of a large-diameter stormwater pipe that will run from above the Upper Levels Highway, down to a new outfall at the Burrard inlet. Intake structures installed on the creeks will capture any significant stormwater that will overflow the creek banks and divert the excess flow into the pipe.
Managing storm-level flows within these creeks will reduce the impacts of intense storms in Westmount and Altamont—both present-day levels and anticipated increasing levels of severity due to climate change.
The project's construction will be broken down into sections and completed in phases. In order to reduce the duration of disruption as much as possible, there may be times when multiple crews will be working at different sections of the project. Construction will include the following:
- Water main relocation along 3200 to 3300 block of Westmount Road, Benbow Road between Thompson Place to Westmount Road, Thompson Crescent between Mathers Avenue to Thompson Place, and 3100 to 3200 block of Mathers Avenue.
- Large diameter storm pipe (approximately 1.8 meters to 3.0 meters) installation under 31st Street, Mathers Avenue and Westmount Road, in the Westmount and Altamont Neighbourhoods.
- Stormwater outfall to Burrard Inlet at the foot of 31st street.
- Storm diversion pipe and creek intake structures above the Upper Levels Highway.
The District completed an Integrated Stormwater Management Plan (ISMP) in 2013 that identified 18 existing culverts and 24 existing channel sections below the Upper Levels Highway as being inadequate to safely convey high flow storm runoff.
In addition, the ISMP indicated that the creeks within the watershed may not have sufficient capacity to handle extreme natural storm events—which are increasing due to climate change— without flooding and significant erosion of the creeks. To reduce the risk of flooding, it was determined that the best solution is a new stormwater pipe that to collect excess water from the creeks and safely convey this stormwater directly to the ocean.
The project is required to reduce in-stream impacts on existing homes, many of which were built within stream setbacks and even on top of creeks. The stormwater diversion eliminates the need for the District to upgrade or replace the existing under-capacity culverts and channels.
Purpose
The purpose of this storm diversion project is to contain extreme stormwater flows from the watersheds of Pipe Creek, Westmount Creek, Cave Creek, Turner Creek and Godman Creek before they can impact the Rodgers Creek, Westmount and Altamont neighbourhoods.
Benefit
The project will increase the level of flood protection for approximately 800 homes below the Upper Levels Highway and reduce erosion hazards, protect life and property in these neighbourhoods, and protect the watershed health of the Five Creek drainage areas.
Description of work
- Water main relocates followed by complete road reconstruction and resurfacing.
- Storm diversion pipe and intake structures.
- Blasting may be required in some areas during construction due to the topography and natural ground conditions of the area, a pre-blasting survey will be conducted by the blasting company for all residents located within 50 meters of a proposed blasting site, access to the residence is required (for a complete per blast survey).
- Road reconstruction resurfacing, with sidewalk installation.
- Boulevard restoration.
Construction of a large infrastructure project will have an impact on the neighbourhood. It will create inconvenience for residents. However, the inconvenience is temporary and the District is working to minimize the impact as much as possible.
Construction work will be broken down into stages; each stage will be finished before the contractor can move along to the next one. There will be times during the construction of the water main relocate that two construction crews will be working concurrently.
This will limit the amount of time the construction directly impacts each resident.
Traffic management and pedestrian safety
Onsite traffic control persons will manage pedestrian, cyclist and vehicle safety through the construction zone.
Please remember that traffic control persons and signage are there for your safety, as well as the safety of the construction workers. Please respect all signage and personnel.
Construction hours will follow the District’s Noise Control Bylaw. Construction will be permitted from are 7:30 a.m.–5:30 p.m., Monday to Friday, or Saturdays between 8 a.m. and 5 p.m. as required to complete work on schedule.
During water main relocate construction:
- The work will require single lane alternating traffic.
- Traffic control persons will be on-site during construction hours to help facilitate access for local traffic and any emergency vehicles.
- Parking will be restricted on the road and boulevards during the construction
- Temporary no parking signs will be installed prior to the work
- Local residents will receive additional notifications prior to start of any traffic disruptions within that phase.
During stormwater diversion construction:
- Traffic control personnel will be on site to accommodate necessary detours and to help facilitate access for local traffic and any emergency vehicles during construction hours.
- No through road permitted for local and non-local traffic.
- A minimum of one controlled access point will be provided for local residents within the affected road segment.
- Residents within the active construction stage area may only use the designated controlled access point.
- Safe residential access (both pedestrian and vehicular) is considered very important and delays will be limited 10 minutes or less.
- Road closures will remain in effect after hours, with access restricted to single-lane vehicular traffic for local traffic only.
- Parking will be restricted on the road and boulevards during the construction.
- Temporary no parking signs will be installed prior to the work.
- Local residents will receive additional notifications prior to start of any traffic disruptions within that phase.
Traffic Management Plan for the stormwater diversion construction
Due to the construction along 31st Street, the 253 will be re-routed to 24th Street, along Mathers and up to Highway 1. Bus stops in the construction area will be temporarily inactive. We first considered a detour route through Hillcrest but, after listening to concerns voiced by residents, the 253 was re-routed to 24th Street.
Bus #253 detour maps
Detour for #253 Caulfield bus (map provided by Blue Bus)
Detour for #253 Caulfeild bus (map provided by Coast Mountain Bus Company)
Transit users will be able to take the #250 and #250a Horseshoe Bay buses which travel along Marine Drive and transfer to the rerouted #253 Caulfield bus.
The #250a Horseshoe Bay bus runs every 8 to 12 minutes throughout the day and during peak periods sometimes as often as every 6 minutes.
Expect delays especially during peak hours of 7–9 a.m. and 3–5:30 p.m.