Omroro Pipelines Project Public Meeting 15 August 2019 Agenda - PowerPoint PPT Presentation

Omāroro Pipelines Project Public Meeting 15 August 2019

Agenda  Introductions ─ Wellington Water, Brian Perry Civil, WCC, GWRC  Overview of project – Wellington Water  Progress report – Brian Perry Civil  Wallace St bulk main works / diversion options – Brian Perry Civil  Questions

Overview  Omāroro Reservoir being built to address growth and improve resilience  Pipelines project is building the water network for the Omāroro Reservoir  Further renewal work being delivered at the same time – intent is no more major water network works in the area for many years

Scope of pipelines work  A new bulk water main  (Hargreaves, Wallace, Howard)  Renewal of local water mains  (Hargreaves, Wallace, Finlay)  Upgrade of storm water pipe  (Rolleston, Wallace)  Renewal of existing sewer (Wallace, Finlay) 

Progress report  Local water renewals on Hargreaves St completed  Bulk water on Hargreaves St underway  Local water renewals on Wallace St underway  Valve chamber at Hargreaves/Wright St corner underway  We’ll keep you informed about impact and progress of work

Construction Plan – estimated dates bulk water main local water mains storm water sewer

Wallace St traffic volumes  Weekday/weekend peak is ~1600/hr (~20,000/day)  10pm – 5am peak is ~400/hr (~1000/nght)  Wright St peak flow is ~200/hr (~1000/day)  June/July 2017, June 2018 traffic counts

Wallace St traffic reduction  VMS boards encourage use of alternative routes  Advertising campaign on radio, social media and other online channels  Advising delivery co’s, taxis, ubers to use alternate routes We anticipate  significant reduction in flow along Wallace St  WCC will continue to monitor

TM options for Wallace St bulk main work Options considered included:  Option 1 : Stop Go on Wallace Street  Option 2 : Partial Diversion, NB Wright St, SB Wallace St  Close Wallace St/ Wright St  Option 3 : Full diversion to Adelaide Rd  Option 4 : Full diversion to Tasman St  Option 5 : Close Wallace St, NB Wright St, SB Tasman St  Option 6 : Close Wallace St, full diversion to Wright St  This is by far the safest and least disruptive option

Option 1: Stop / Go on Wallace St  Advantages ─ No diversion required ─ No changes to bus operations  Ruled out because ─ Stop / Go on Wallace St creates gridlock throughout the network due to tailbacks ─ The modelling confirms intolerable delays even outside of peak hours ─ This option is not feasible

Wallace St bulk water challenge

Option 2: NB Wright St, SB Wallace St  Partial diversion, northbound traffic only onto Wright St  Advantages ─ Only northbound traffic on Wright St  Ruled out because ─ Wallace St road width is insufficient to safely construct bulk water pipes from Hargreaves St to Howard St ─ Due to deep trenches, large diameter pipes leaves insufficient room to allow traffic flow past the work site ─ This option is not feasible

Bus routing options  Divert via Adelaide Rd ─ Too far from current routes, large number of stops displaced ─ High impact on University and Schools  Divert via Tory St / Tasman St ─ Diversion leads to convoluted routes ─ Twice carparks affected & overhead services to resolve (cf Wright St) ─ Significant distance from current routes, stops displaced  Divert via Wright St ─ Short Diversion follows same route (1 stop relocated from Wallace St) ─ Some overhead wires need lifting for double-deckers

Option 3: Full diversion to Adelaide Rd  Wallace St and Wright St both closed to through traffic  Advantages ─ No additional traffic on Wright St  Ruled out because ─ Very long diversion ─ Limited capacity on Adelaide Road for the additional traffic ─ Public transport impact too great – route changes and delays ─ Network resilience compromised if Wallace St + Wright St closed ─ This option is not feasible

Option 4: Full diversion to Tory St/Tasman St  Wallace St and Wright St both closed to through traffic  Advantages ─ No additional traffic on Wright St  Ruled out because ─ Poor connection to road network, particularly north end ─ Very long diversion ─ Tory St / Tasman St ill-suited to anticipated traffic flows ─ More affected residents, more parking displaced ─ Public transport impact significant – long route change

Option 5: NB Wright St, SB Tasman St  Wallace St closed between Hargreaves St and John St  Advantages ─ Only northbound traffic on Wright St  Ruled out because ─ Same reasons as Option 4 ─ Complex diversion due to diverse routes NB/SB ─ Max number of affected residents

Option 6: Full Diversion Wright St  Wallace St closed between Hargreaves St and John St  Disadvantages ─ Significantly increased traffic on Wright St  Advantages ─ Shortest diversion length – least impact on residents/parking ─ Least impact on bus operations and bus users ─ Minimal infrastructure change required ─ This is by far the safest and least disruptive option

Wright St diversion  Traffic diverted to Wright St at Hargreaves St and John St  Car parking removed on one side of Wright St  Buses will use the route  Travel times reliable  Work can proceed safely  Overall disruption shortened with this diversion  Wright St diversion route  Wallace St work area

Wright St bus route  Testing/Investigations ─ Have modelled longest buses using vehicle tracking software ─ Have physically trialled the longest buses by driving the route ─ Wires lifted for double deckers ─ To do: Adjust road camber at corners in Hargreaves St ─ To do: Test drive double deckers ─ Buses will pass each other on Wright St ~16 times a day  Controls ─ Bus stop will be near the laneway to Wallace St ─ Signalised crossing for pedestrians as per Wallace St ─ Additional lighting if required

Wright St diversion bus tracking John St / Wright St intersection Hargreaves St / Wright St intersection

Impacts of diversion on Wright St residents  The additional traffic will be significantly greater than existing flows - expect reduction on current Wallace St traffic  Pedestrian crossing installed near alley through to Wallace St for safe passage across Wright St  Bus stop moved from outside Wallace St dairy to beside new pedestrian crossing in Wright St  Car parks removed on one side (uneven numbers) to provide space for two way traffic  Rubbish collection will be on a different schedule

What can be done to reduce the impact?  Traffic calming measures such as reduced speed limits, traffic lights and minimum lane widths  VMS boards on feeder routes encouraging people to use Adelaide Road as an alternative  Advertising campaign on radio, social media and other online channels telling people to avoid the area  Asking delivery companies, taxis, ubers to use alternate routes  Coupon parking will be changed to residents’ parking in adjacent streets – surveys indicate unused parks exceed ‘lost’ parks

Impacts of work on Wallace St residents  Access to properties from each end of the work site (no through traffic)  Work site moving along the street, different residents impacted as work progresses  No parking on street adjacent to work sites  Full communication with affected residents and businesses  1-1 engagement to address individual issues for access that arise (as we have been doing in Hargreaves St)  Pedestrians will need to use the formal crossing points, this will add distance to some people’s walks

Time considerations in diversion options Alternative 1 – 43 week diversion onto Wright St 11 week full diversion (bulk main works) Nov 2019 – Feb 2020 + 32 week NB diversion (sewer/local water) Feb 2020 – Sep 2020 or Alternative 2 – 23 week diversion onto Wright St 23 week full diversion (bulk main/sewer/local water) Nov 2019 – May 2020