CONTRACT C1039: N2/BORCHERDS QUARRY INTERCHANGE AND RELATED WORKS SARF SEMINAR 11 AUGUST 2016

Transcription

1 CONTRACT C1039: N2/BORCHERDS QUARRY INTERCHANGE AND RELATED WORKS SARF SEMINAR 11 AUGUST 2016

2 Current Spatial Pattern - MSDF

3 MSDF

4 City Of Cape Town CTOD

5 City Of Cape Town CTOD

6 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.

7 Philippi Freeway Accessibility Existing Situation DELFT SOUTH N2/R300 SWARTKLIP INTERCHANGE AIRPORT INDUSTRIA PHILIPPI INDUSTRIA (NORTH) PHILIPPI EAST NEW CROSSROADS PHILIPPI INDUSTRIA (SOUTH) NYANGA PHOLA PARK ROUTE 1 R300 access from North and N2 access from East ROUTE 2 R300 access from West ROUTE 3 N2 access from West BROWNS FARM

8 Borcherds Quarry Road

9 Eisleben Drive

10 PREVIOUS ROAD/INTERCHANGE LAYOUTS New Borcherds Quarry Alignment Airport Industria CTIA Perimeter Road King David Golf Course Development

11 Alternative Interchange Layouts

12 Minimum Ramp Spacing Requirements RECOMMENDED MINIMUM RAMP TERMINAL SPACING (SANRAL) Table 7.1 Interchange Spacing in terms of Signage Requirements Interchange Configuration Ramp access to access Ramp access to system interchange System interchange to ramp access System interchange to system interchange Minimum ramp spacing in urban areas 1300m 2100m 1400m 2500m

13 3 Signalised intersections (200m spacing) (sub-standard spacing; 540m required) N2/R300 SWARTKLIP INTERCHANGE Exit ramp to Symphony Way off new extended C-D road leading to N2/R300 eastbound ramp. 300m between merges Meets AASHTO minimum spacing. TO CAPE TOWN ALTERNATIVE A-1 N2 half diamond interchange onto Symphony Way. Indirect N2 access into Philippi Industria via Sheffield Road. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

14 TO SOMERSET WEST NEW CROSSROADS TO CAPE TOWN ALTERNATIVE A-2 N2 partial trumpet interchange with west facing ramps only, direct N2 access onto extended Stock Road. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

15 TO SOMERSET WEST INTERSITE LAND NEW CROSSROADS TO CAPE TOWN ALTERNATIVE A-3 Full trumpet interchange with direct N2 access onto extended Stock Road. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

16 TO SOMERSET WEST Requires CTIA perimeter fence to be set back additional 10-20m NEW CROSSROADS TO CAPE TOWN ALTERNATIVE A-4 Full diamond interchange with direct N2 access onto Stock Road extension. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

17 TO SOMERSET WEST TO CAPE TOWN ALTERNATIVE B-1 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. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

18 TO SOMERSET WEST ` TO CAPE TOWN ALTERNATIVE B-2 Combine existing BQ and NBQ Interchanges as a split Diamond Interchange on N2, option to add east facing ramps on NBQ for Airport Precinct. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

19 TO SOMERSET WEST TO CAPE TOWN ALTERNATIVE B-3 Combine existing BQ and NBQ Interchanges as a double (B type) Parclo Interchanges with a 500m weave length on N2 between merging and diverging ramps. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

20 TO SOMERSET WEST ` Note: C-D roads in fill for overpass structure over existing Borcherds Quarry Road TO CAPE TOWN ALTERNATIVE B-4 Combine existing BQ and NBQ Interchanges with C-D road arrangement with partial single point diamond arrangement for major N2/Eisleben Drive/NBQ turn movements. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

21 TO SOMERSET WEST ` ` Note: C-D roads in fill for overpass structure over existing Borcherds Quarry Road TO CAPE TOWN ALTERNATIVE B-5A New 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. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

22 TO SOMERSET WEST ` TO CAPE TOWN ALTERNATIVE B-5B New single point diamond interchange on NBQ with only west facing ramps retained at existing BQ Interchange. No C-D roads proposed. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

23 TO SOMERSET WEST Note: C-D roads in fill for overpass structure over existing Borcherds Quarry Road TO CAPE TOWN ALTERNATIVE B-6A New 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. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

24 TO SOMERSET WEST TO CAPE TOWN ALTERNATIVE B-6B New diamond interchange on NBQ with only west facing ramps retained at existing BQ Interchange. No C-D roads proposed. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

25 TO SOMERSET WEST TO CAPE TOWN ALTERNATIVE B-6C New diamond interchange on NBQ with no west facing ramps retained at existing BQ Interchange. No C-D roads proposed. LEGEND Freeways New Arterial/Service/Access Roads Existing Arterial/Service/Access Roads MyCiti Busway Lanes Traffic Signals

26 Alternative Interchange Layouts

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35 Summary of Successive Ramp Spacings on N2 Freeway Distance Between Successive Ramps Along N2 Freeway EB (To Somerset West) WB (To Cape Town) Design Spacing Minimum Spacing (SANRAL) Design Spacing Minimum Spacing (SANRAL) Alternative 3a Alternative 8 Airport Approach NBQ 1555m 1300m R300 NBQ 1895m 1400m NBQ R m 2100m Airport Approach EBQ NBQ Airport Approach 2105m 1300m 830m 1300m R300 NBQ 1895m 1400m EBQ NBQ 830m 1300m NBQ EBQ 1045m 1300m NBQ R m 2100m EBQ Airport Approach 1045m 1300m

36 Nett Total Cost R mil Nett Total Cost R mil (excl. VAT); (incl. Contingency and Contractor P&G) N2 CORRIDOR (PGWC) Interchange Upgrades Additional 3rd lane on N2 to km 17.5 Subtotal ROAD NETWORK (CoCT) km Mew Way SANRAL Nett Total Cost (excl. VAT) Alternative 1 R R R R R R R R R R R R A R R R R R R B R R R R R R * 5 7 R R R R R R R R R R R R R R R R R R R R R R R R *Measurement Includes C-D Roads and Realignment of the N2

37 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

38 Multi Criteria Evaluation: Summary of Findings: Weighting Summary Evaluation Criteria HHO AFRICA (ORIGINAL WEIGHTING) CoCT IRT Planning CoCT Spatial Planning HHO AFRICA (EQUAL WEIGHTING) Construction Cost Cost of roads, bridges, services, property acquisition, etc Interchange Planning / Road Network Considerations Network Traffic Performance PT Services / NMT Network Improved Access and Security Risk to Implementation Interchange/C-D ramps: spacing requirements Road hierarchy Intersection spacing Travel time savings and level of service IRT/ Public transport services NMT routes across N Philippi Industrial & surrounds CTIA, Airport precincts, etc Potential delays due to housing relocation and land acquisition Total

39 Multi Criteria Evaluation: Summary of Findings: Score Summary Weighting Alternative 1 2 3a 3b 4c HHO AFRICA (ORIGINAL WEIGHTING) CoCT IRT Planning CoCT Spatial Planning HHO AFRICA (EQUAL WEIGHTING) TOTAL

40 Preferred Alternative

41 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

42 Future Flows on Alternative 03A Network : AM Peak Hour

43 Future Flows on Alternative 03A Network : PM Peak Hour

44 Borcherds Quarry Road Robert Sobukwe to Airport Approach

45 New Borcherds Quarry Road Airport Approach to N2

46 New Borcherds Quarry Road/N2 Interchange

47 New Eisleben Drive N2 to Govan Mbeki

48 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 Corridors Extend N2: 3rd lane/bmt lane from Borcherds Quarry Interchange to Mew Way Interchange. NMT infrastructure along the route Improved NMT accessibility across the N2 Allowed 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

49 Way Forward Phase 1: 3 rd 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