CONTRACT C1039: N2/BORCHERDS QUARRY INTERCHANGE … · 8/11/2016 · N2/BORCHERDS QUARRY...
Transcript of CONTRACT C1039: N2/BORCHERDS QUARRY INTERCHANGE … · 8/11/2016 · N2/BORCHERDS QUARRY...
CONTRACT C1039:N2/BORCHERDS QUARRY INTERCHANGE AND
RELATED WORKS
SARF SEMINAR 11 AUGUST 2016
Current Spatial Pattern - MSDF
MSDF
City Of Cape Town CTOD
City Of Cape Town CTOD
Project Planning Objectives
Understand the medium to long term land-use and transport infrastructure scenarios for the study area.
Improve N2 access to Philippi Industria.
Improve N2 access to CTIA and adjacent industrial areas (Airport Industria, Airport City)
Improve public transport access on:Proposed IRT corridor along Eisleben/Lansdowne/New Borcherds Quarry.
Extend N2: 3rd lane/BMT lane from Borcherds Quarry Interchange to Mew Way Interchange.
Allow in the infrastructure planning for Airport Beltway Expressway improvements.
Support a consistent road network/hierarchy in the study area.
AIRPORT INDUSTRIA
NYANGA
NEW CROSSROADS
BROWNS FARM
PHOLA PARK
PHILIPPI EAST
DELFT SOUTH
PHILIPPI INDUSTRIA (SOUTH)
PHILIPPI INDUSTRIA (NORTH)
Philippi Freeway Accessibility Existing Situation
ROUTE 1 – R300 access from North and N2 access from EastROUTE 2 – R300 access from WestROUTE 3 – N2 access from West
N2/R300 SWARTKLIP INTERCHANGE
Borcherds Quarry Road
Eisleben Drive
PREVIOUS ROAD/INTERCHANGE LAYOUTS
•New Borcherds Quarry Alignment•Airport Industria
•CTIA Perimeter Road•King David Golf Course Development
Alternative Interchange Layouts
Minimum Ramp Spacing Requirements
RECOMMENDED MINIMUM RAMP TERMINAL SPACING (SANRAL)
Table 7.1 Interchange Spacing in terms of Signage Requirements
Interchange Configuration Minimum ramp spacing in urban areas
Ramp access to access 1300m
Ramp access to system interchange 2100m
System interchange to ramp access 1400m
System interchange to system interchange
2500m
TO CAPE TOWN
N2/R300 SWARTKLIP INTERCHANGE
ALTERNATIVE A-1
LEGENDFreeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
Exit ramp to Symphony Way off new extended C-D road leading to N2/R300 eastbound ramp.
3 Signalised intersections (200m spacing) (sub-standard spacing; 540m required)
300m between mergesMeets AASHTO minimum spacing.
N2 – half diamond interchange onto Symphony Way. Indirect N2 access into Philippi Industria via Sheffield Road.
TO CAPE TOWN
ALTERNATIVE A-2
TO SOMERSET WEST
NEW CROSSROADS
LEGENDFreeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
N2 partial trumpet interchange with west facing ramps only, direct N2 access onto extended Stock Road.
ALTERNATIVE A-3Full trumpet interchange with direct N2 access onto extended Stock Road.
TO SOMERSET WEST
TO CAPE TOWN
NEW CROSSROADS
INTERSITE LAND
LEGENDFreeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
ALTERNATIVE A-4Full diamond interchange with direct N2 access onto Stock Road extension.
TO SOMERSET WEST
NEW CROSSROADS
TO CAPE TOWN
Requires CTIA perimeter fence to be set back additional 10-20m
LEGENDFreeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
ALTERNATIVE B-1
TO CAPE TOWN
TO SOMERSET WEST
Minimum infrastructure intervention. Retain existing Borcherds Quarry (BQ) Road Interchange, build extension of New Eisleben Drive over N2 into New Borcherds Quarry (NBQ) with no access to N2. Option to add east facing ramps on NBQ for Airport Precinct.
LEGENDFreeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
ALTERNATIVE B-2
TO CAPE TOWN
TO SOMERSET WEST
Combine existing BQ and NBQ Interchanges as a split Diamond Interchange on N2, option to add east facing ramps on NBQ for Airport Precinct.
LEGENDFreeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
`̀
TO CAPE TOWN
TO SOMERSET WEST
LEGENDFreeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
ALTERNATIVE B-3Combine existing BQ and NBQ Interchanges as a double (B type) Parclo Interchanges with a 500m weave length on N2 between merging and diverging ramps.
TO CAPE TOWN
LEGENDFreeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
ALTERNATIVE B-4Combine existing BQ and NBQ Interchanges with C-D road arrangement – with partial single point diamond arrangement for major N2/Eisleben Drive/NBQ turn movements.
`̀
Note: C-D roads in fill for overpass structure over existing Borcherds Quarry Road
TO SOMERSET WEST
TO CAPE TOWN
LEGENDFreeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
ALTERNATIVE B-5ANew single point diamond interchange on NBQ with only west facing ramps retained at existing BQ interchange. Proposed C-D roads linking two sets of west facing ramps.
`̀ `̀
Note: C-D roads in fill for overpass structure over existing Borcherds Quarry Road
TO SOMERSET WEST
TO CAPE TOWNLEGEND
Freeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
ALTERNATIVE B-5BNew single point diamond interchange on NBQ with only west facing ramps retained at existing BQ Interchange. No C-D roads proposed.
`̀
TO SOMERSET WEST
TO CAPE TOWN
LEGENDFreeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
ALTERNATIVE B-6ANew diamond interchange on NBQ with only west facing ramps retained at existing BQ Interchange. Proposed C-D roads linking two sets of west facing ramps.
Note: C-D roads in fill for overpass structure over existing Borcherds Quarry Road
TO SOMERSET WEST
TO CAPE TOWNLEGEND
Freeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
ALTERNATIVE B-6BNew diamond interchange on NBQ with only west facing ramps retained at existing BQ Interchange. No C-D roads proposed.
TO SOMERSET WEST
TO CAPE TOWNLEGEND
Freeways
New Arterial/Service/Access Roads
Existing Arterial/Service/Access Roads
MyCiti Busway Lanes
Traffic Signals
ALTERNATIVE B-6CNew diamond interchange on NBQ with no west facing ramps retained at existing BQ Interchange. No C-D roads proposed.
TO SOMERSET WEST
Alternative Interchange Layouts
Summary of Successive Ramp Spacings on N2 Freeway
Distance Between Successive Ramps Along N2 Freeway
EB (To Somerset West) WB (To Cape Town)
Design SpacingMinimum Spacing
(SANRAL) Design SpacingMinimum Spacing
(SANRAL)
Alternative 3a
Airport Approach ‐NBQ 1555m 1300m R300 – NBQ 1895m 1400m
NBQ ‐ R300 2855m 2100m NBQ – Airport Approach 2105m 1300m
Alternative 8
Airport Approach – EBQ 830m 1300m R300 – NBQ 1895m 1400m
EBQ – NBQ 830m 1300m NBQ – EBQ 1045m 1300m
NBQ – R300 2855m 2100m EBQ – AirportApproach 1045m 1300m
Nett Total Cost R mil
Nett Total Cost R mil
(excl. VAT); (incl. Contingency and Contractor P&G)
N2 CORRIDOR (PGWC)
ROAD NETWORK (CoCT)
km 17.5 - Mew Way SANRAL
Nett Total Cost (excl. VAT)
Alternative
Interchange Upgrades
Additional 3rd lane on N2 to km 17.5
Subtotal
1 R 263.68 R 96.75 R 360.43 R 219.71 R 82.52 R 662.67
2 R 313.32 R 96.75 R 410.08 R 219.71 R 82.52 R 712.31
3A R 205.49 R 96.75 R 302.25 R 219.71 R 82.52 R 604.483B R 255.14 R 96.75 R 351.89 R 219.71 R 82.52 R 654.13
4* R 413.93 R 96.75 R 510.68 R 247.76 R 82.52 R 840.96
5 R 220.08 R 96.75 R 316.83 R 219.71 R 82.52 R 619.07
7 R 222.19 R 96.75 R 318.95 R 219.71 R 82.52 R 621.18
8 R 210.98 R 96.75 R 307.73 R 219.71 R 82.52 R 609.97
*Measurement Includes C-D Roads and Realignment of the N2
Multi Criteria Evaluation
PROPOSED EVALUATION CRITERIA FOR INTERCHANGE / ROAD NETWORK ALTERNATIVES
Proposed Rating
Description Rating
Excellent 5
Above average 4
Average 3
Below average 2
Poor 1
Multi Criteria Evaluation: Summary of Findings: Weighting Summary
Evaluation Criteria
HHO AFRICA
(ORIGINALWEIGHTING)
CoCT IRT Planning
CoCT SpatialPlanning
HHO AFRICA (EQUAL
WEIGHTING)
Construction CostCost of roads, bridges, services, property acquisition, etc.
20 20 20 16.7
Interchange Planning / Road Network Considerations
Interchange/C-D ramps: spacing requirements
10 10 10 8.3
Road hierarchy 5 5 5 4.2
Intersection spacing 5 5 5 4.2
Network Traffic Performance
Travel time savings and level of service
20 20 10 16.7
PT Services / NMT Network
IRT/ Public transport services 5 7.5 10 8.3
NMT routes across N2 5 7.5 5 8.3
Improved Access and Security
Philippi Industrial & surrounds 15 7.5 15 12.5
CTIA, Airport precincts, etc. 5 7.5 10 4.2
Risk to Implementation
Potential delays due to housing relocation and land acquisition
10 10 10 16.6
Total 100 100 100 100
Multi Criteria Evaluation: Summary of Findings: Score Summary
WeightingAlternative
1 2 3a 3b 4c 5 7 8
HHO AFRICA (ORIGINAL WEIGHTING)
3734
3734
4121
4053
3317
3516
3188
4121
CoCT IRT Planning 3724
3695
4101
4003
3238
3676
3257
4072
CoCT Spatial Planning 3754
3715
4101
4023
3188
3715
3457
4052
HHO AFRICA (EQUAL WEIGHTING) 3654
3605
3991
3893
3237
3486
3198
3972
TOTAL 14854
14735
16311
15963
12958
14376
13077
16212
Preferred Alternative
Land Use Projections & Traffic Modelling
CoCT Pragmatic Densification Scenario (PDS) for 2032 as based Modelled scenario uses PDS as base, plus :
CTIA generated traffic (25 MPA)PEDI "optimistic scenario" (105ha)Portion of Glebe land (76 ha; 70% of 108ha)1% pa background peak hour traffic growth
Future Flows on Alternative 03A Network : AM Peak Hour
Future Flows on Alternative 03A Network : PM Peak Hour
Borcherds Quarry Road – Robert Sobukwe to Airport Approach
New Borcherds Quarry Road – Airport Approach to N2
New Borcherds Quarry Road/N2 Interchange
New Eisleben Drive – N2 to Govan Mbeki
Project Planning Objectives
In conclusion we have met the following objectives:Understood the medium to long term land-use and transport infrastructure scenarios for the study area.Improved N2 access to Philippi Industria and its linkage to the Airport & Airport Industrial Area.Improved N2 access to CTIA and adjacent industrial areas (Airport Industria, Airport City)Improved public transport access on:
Proposed IRT corridor along Eisleben/New Borcherds Quarry, with links to Klipfontein & Wetton-Lansdowne Road CorridorsExtend N2: 3rd lane/BMT lane from Borcherds Quarry Interchange to Mew Way Interchange.NMT infrastructure along the route
Improved NMT accessibility across the N2Allowed in the infrastructure planning for Airport Beltway Expressway improvements.Supported a consistent road network/hierarchy in the study area.“Paving the way” towards the City’s vision of a node at Philippi
• Phase 1: 3rd lane on N2 underway• Remaining Phases: Scheduled for 2018/19
• Finalise detailed design
• Relocation of Steenbras water main
• Relocation of informal housing within road prism
Way Forward