Costs and benefits of presented A27 improvement options

The Chichester bypass scheme has seven aims. This table compares each of the schemes using material supplied by the Highways England in its various reports

Aims Option 1 south 1A south 2 south 3 south 3A south 4 north 5 north Best score 2nd best score
Aim 1 Improve capacity and support the growth of the regional economy
Improved time travel benefits £M 383.0 297.3 575.9 194.7 359.0 610.7 588.3 Option 4 Option 5
Construction cost @ 2014 prices 182.0 139.0 280.0 47.0 172.0 333.2 307.0
Present Value Costs including capital and operating costs £m at 2010 prices 137.2 112.2 207.3 44.7 132.8 258.8 240.4 Option 3 Option 1A
Present Value Benefits including accident reduction, indirect tax revenues, noise reduction, air quality and greenhouse gases £m at 2010 prices 349.4 279.1 551.3 184.9 308.0 692.9 687..0 Option 5 Option 4
Ratio of Benefits to Costs. Above 2 =Good 2.6 2.5 2.7 4.1 2.3 2.7 2.9 Option 3 Option 5
Aim 2 Improve road safety Benefits or Costs £m -8.5 1.9 8.4 5.8 -24.1 61.4 73.6 Option 5 Option 4
Aim 3 Reduce environmental impacts (air quality and noise) £m 2.9 0.6 2.2 2.8 1.0 3.2 3.9 Option 5 Option 4
Cultural Heritage Impact assesment adverse effects  MAJOR ADVERSE
Chichester Conservation Area Significant Significant Significant Significant
Fishbourne Concervation Area Significant Significant Significant
Lavant ConservationArea Moderate Moderate
Chichester Dyke Historical site Moderate Significant
Chichester Harbour AONB Significant Significant Significant
Aim 4 Improve the time reliability on strategic road network A27 through flow savings in minutes 1.4 3.0 5.7 3.0 4.1 8.0 10.0 Option 5 Option 4
Savings on local traffic 1.3 1.2 2.2 0.3 1.3 not given not given
Note there has been no measurement of the detriment to the local network as traffic rat runs develop to avoid the no right turn junctions.
Aims Option 1 south 1A south 2 south 3 south 3A south 4 north 5 north Best score 2nd best score
Aim 5 Facilitate timely delivery build time in months 41 23 41 15 27 24 24 Option 3 Optopn 1A
Cost of traffic delays during consruction £m 14.7 13.7 25.0 11.6 12.9. 0.9 0.8 Option 5 Option 4
Aim 6 Improve regional connectivity Aim 7 Improve acces sto areas with tourist activity Only options 4 and 5 offer a northern link so traffic wishing to go north to Petersfield/Midhurst does not have to travel through Chichester. Separation of local events/tourist traffic and through east/west. The Manhood Penninsula is an area which has the majority of the tourism based accommodation and yet Options 1-3a do not demonstate an improvement to this by significant measure. On the other hand the northern route removes 42% of the traffic allowing free flow on the A27 as it returns to design capacity levels of 23,000 vehicles per day compared with the current 48,000 per day. Option 4 Option 5
Buildings demolished. 5.0 5.0 20.0 0.0 2.0 5.0 8.0 Option 3 Option 3a
The traffic flows along the B2166 have not been identified but there is a note in the Highways England (HE) report which suggests that the single carriage way to Fishbourne may reach its peak capacity around 2035 when dual carriage ways may be needed. What does this imply for traffic that is flowing east/west along the B2166 to and from Bognor regis.
The traffic modellers have implied in meetings that they were not aware of the housing developments in Chichester (5000) or Bognor (5000) between now and 2030. They were not aware of the Free School moving to the Convent which will increase the traffic at Whyke roundabout and on some options push school traffic through North Mundham and Runcton
An area of concern for Runcton and Mundham is how much traffic is going to use the Vinnetrow Road as a short cut to get ahead of traffic on the Bognor Road and to avoid the problem of no right turn at the Whyke roundabout.
If you go to the consultation do ask about the traffic flows through Runcton and North Mundham. Ask what they see as the noise and air pollution problems.
MARRA asks you to ensure that you do fill in a consultation form. If you agree with MARRA that a northern bypass would be the best solution please tick the ‘No option’ box and put your reasons in the text box below.