Figures - Gravesham - Welcome to the democracy section 3 Maps and... · Figures 1. Map of overall...

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Figures

1. Map of overall corridors

2. Option A Overall

3. Option B Overall

4. Option B Ebbsfleet

5. Option C Overall

6. Option C Shorne

7. Option C Chalk

8. Option Cvariant Bluebell Hill

9. Tables of traffic flow data

10. Strategic Highway Network Performance

11. Habitats Regulation Assessment Flowchart

12. Landscape and listed buildings

13. Heritage

14. Biodiversity – Nature Conservation

15. Biodiversity - Habitats

16. Noise Constraints

17. Air Quality Constraints

18. Green Belt and Sites

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Figure 1: The overall corridors

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Figure 2: Option A Overall

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Figure 3: Option B Overall

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Figure 4: Option B Ebbsfleet

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Figure 5: Option C Overall

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Figure 6: Option C Shorne

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Figure 7: Option C Chalk

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Figure 8: Option Cvariant A229 Bluebell Hill

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Figure 9: Tables of traffic flow data

Comparison of existing hourly flows with forecast hourly flows on Thames

Crossings

The following tables provide a comparison of existing base flows in 2009 with anticipated

flows in 2025 (opening year) and 2041 as modelled by Aecom. The anticipated flows are

core estimates that take into account planned development to 2025 and increased transport

costs over the period.

Terminology

NoNc = No New Crossing

Option A = new crossing at site of existing crossing at Dartford – anticipated to operate at

75% of capacity or less.

Option B = new crossing at Swanscombe Peninsula – anticipated that existing Dartford

Crossing would operate at 90% of capacity and still experience congestion on occasion.

Option C = new crossing east of Gravesend – anticipated that existing Dartford Crossing

would operate at 90% of capacity and still experience congestion on occasion.

Option CVariant = New crossing east of Gravesend plus new junction at Bluebell Hill to link to

M20 – anticipated that existing Dartford Crossing would operate at 90% of capacity and still

experience congestion on occasion.

NB: Numbers in Red in table indicate that forecast flows exceed those shown for 2009

baseline flow at existing Dartford Crossing.

Numbers in Bold Red in table indicate that the maximum peak hour northbound

baseline flow is exceeded.

This suggests that whilst Options B, C and Cvariant deliver additional overall river crossing

capacity, they do not deal with the fundamental issue of constraints on northbound flows that

lead to peak hour congestion at the existing Dartford Crossing. This would appear to be the

case during the PM peak even on opening of any new crossing in 2025, with northbound

flows also coming close to the 5,000 per hour figure by 2041 for the AM peak and Interpeak

periods. Given flows will be subject to normal daily variation, this suggests that only Option

A addresses the issue of constraints on northbound flows leading to congestion.

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AM Peak (8am – 9am)

(Northbound)

2009

Base

2025 2041

NoNc OptA OptB OptC OptC

Variant


Variant

Blackwall Tunnel 3,034 3,305 3,302 3,301 3,303 3,301 3,240 3,236 3,234 3,234 3,234

Dartford – Thurrock

Crossing

4,855 5,053 6,320 4,886 4,614 4,609 4,913 6,881 4,947 4,988 4,981

Option B/C 0 0 0 1,927 2,352 2,370 0 0 2,374 2,354 2,381

Total 7,970 8,359 9,622 10,115 10,270 10,280 8,153 10,117 10,555 10,576 10,596

AM Peak (8am – 9am)

(Southbound)

2009

Base


Variant


Variant



Crossing

4,112 5,097 5,356 4,679 4,540 4,531 5,585 6,066 5,311 5,202 5,193

Option B/C 0 0 0 1,208 1,345 1,427 0 0 1,340 1,375 1,462

Total 7,631 8,446 8,706 9,226 9,227 9,299 8,858 9,335 9,912 9,837 9,916

Interpeak

(Average 10am – 4pm)

(Northbound)

2009

Base

2025 2041


Variant


Variant



Crossing

4,193 4,897 5,821 4,634 4,363 4,355 4,706 6,457 4,690 4,811 4,849

Option B/C 0 0 0 1,659 2,084 2,156 0 0 2,048 2,193 2,217

Total 7,026 8,070 8,993 9,463 9,621 9,687 7,820 9,571 9,848 10,118 10,181

Interpeak

(Average 10am – 4pm)

(Southbound)

2009

Base


Variant


Variant



Crossing

4,353 5,634 5,945 5,058 4,724 4,735 5,795 6,489 5,515 5,309 5,317

Option B/C 0 0 0 1,600 1,963 2,035 0 0 1,762 2,077 2,165

Total 7,063 8,595 8,903 9,591 9,618 9,707 7,820 9,571 10,161 10,261 10,371

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Sources: Review of Lower Thames Crossing Options: Central Forecasts and Sensitivity

Tests Report (April 2013)

Table 3.9: Forecast Hourly Vehicle Flows on Thames Crossings

Appendix C: Crossing Flow Tables

Table C.1: 2025 Crossing Vehicle Flows, With and Without New Crossings, Core.

Table C.2: 2041 Crossing Vehicle Flows, With and Without New Crossings, Core.

PM Peak (5pm – 6pm)

(Northbound)

2009

Base

2025 2041


Variant


Variant



Crossing

5,050 5,291 6,559 5,286 5,176 5,190 5,166 6,990 5,177 5,294 5,292

Option B/C 0 0 0 2,070 2,247 2,384 0 0 2,318 2,528 2,577

Total 8,592 8,676 9,947 10,741 10,808 10,958 8,532 10,354 10,860 11,185 11,234

PM Peak (5pm – 6pm)

(Southbound)

2009

Base


Variant


Variant



Crossing

5,458 5,818 6,026 4,934 4,690 4,656 6,014 6,335 5,176 4,923 4,883

Option B/C 0 0 0 1,965 2,271 2,375 0 0 2,065 2,304 2,435

Total 8,536 8,796 9,000 9,832 9,892 9,971 8,954 9,270 10,131 10,116 10,214

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Figure 10: Strategic Highway Network Performance

Delay per Km 2041

Do minimum

Option A Option B

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Option C Option Cvariant

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Figure 11: Habitats Regulation Assessment Flowchart

From Habitats Regulation Assessment for nationally significant infrastructure projects

Advice Note Planning Inspectorate January 2013 version 4

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Figure 12: Landscape and Listed Buildings

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Figure 13: Heritage

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Figure 14: Biodiversity - Nature Conservation

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Figure 15: Biodiversity - Habitats

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Figure 16: Noise Constraints

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Figure 17: Air Quality Constraints

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Figure 18: Green Belt and Sites

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