140429 A303 Feasibility Study Reference Group Meeting Final 200514 v1
Post on 22-Jun-2015
619 Views
Preview:
DESCRIPTION
Transcript
A303/A30/A358 Corridor Feasibility Study Reference
Group Meeting
20 May 2014
Purpose of meeting
• To agree the terms of reference for the Reference Group.
• To explain the work done to progress the study since January.– Finalisation of scope document.– Progression of stage one of the work to gather
evidence on the performance of the routes.
• To set out proposals for the progression of stage 2 of the study – option identification.
Background
• Following 2013 Spending Review, Government announced that it will identify and fund solutions to tackle some of the most notorious and long-standing road hot spots in the country by conducting 6 feasibility studies: – The A27 corridor (incl. Arundel and Worthing)– The A303/A30/A358 corridor– The A1 North of Newcastle– The A1 Newcastle-Gateshead Western Bypass– Trans-Pennine routes– The A47 corridor
• Studies progressed alongside the Highways Agency’s Route Strategy programme.
• Outcomes inform future roads investment decisions as part of the Roads Investment Strategy development process.
Background
• Met with stakeholders on 24 January in Taunton.
• Set out the proposed scope of work and timescales for the study.
• Explained intention to establish a Stakeholder Reference Group.
Study aims and objectives
• Study Aim: to identify the opportunities and understand the case for future investment solutions on the A303/A30/A358 corridor that are deliverable, affordable and offer value for money.
Study aims and objectives
• Study Objectives:– Identify and assess the case, deliverability and timing of specific
infrastructure investments that address existing and future problems on the A303/A30/A358 corridor
– To understand the balance of benefits and impacts from potential individual investment proposals and any additional benefits or impacts from an investment on a corridor basis.
– To evidence where possible, the wider economic benefits from the transport investment in the corridor.
– To understand the impacts of potential investment in the A303/A30/A358 corridor on the performance of other road transport corridors to the South West region.
– Understand the impacts of the proposed investment in the A303/A30/A358 corridor on the resilience of the road transport network.
Timescales and staging of work
Stage 1 Review of evidence and identification of problems along the corridor
Complete by end of March 2014
Stage 2 Work to finalise the range of infrastructure proposals that could address the problems along the corridor
Complete by end of July 2014
Stage 3 Work to assess the affordability, value for money and deliverability of prioritised infrastructure proposals
Complete by autumn 2014
Study management arrangements
• Project board comprised of Departmental and Highways Agency staff to manage and control the study work.
• Stakeholder Reference Group to ensure stakeholders’ views are considered and captured during the study process.– Meet following completion of each of the stages of
work.
Reference Group Terms of Reference
Reference Group serves to:• Represent the views of relevant organisations in relation
to the Feasibility Study and its activities, and where possible, the views of wider stakeholders.
• Provide details where necessary of related activities, strategies and proposals which may impact on, or need to be taken account of in the study work.
• Communicate the activities of the Feasibility Study Reference Group to a wider group of regional and local stakeholders.
Finalised scope document
• Key themes from comments received specifically in relation to the A303/A30/A358 corridor scope document:
Need to build on previous work and studies Study should identify early interventions together with a
long-term plan. Study should result in a prioritised list of interventions.
• Comments received in relation to other studies:
Comment Changes made to scope document
Insufficient protection and recognition given to environmentally sensitive areas and landscape designations
Work will abide by current commitments, as set out within the National Planning Policy Framework and draft NNNPS, to carefully consider the impacts of schemes on such sites.
Stage 1 progress and findings
• The following slides describe the work undertaken in this Stage 1 of the study and will cover the following:– Approach to completing the stage 1 work– Overview of the background and previous work
completed– Overview of the current situation on the corridor– Overview of the predicted/forecast future situation on
the corridor– Explanation of the need for intervention– Summary of the intervention-specific objectives– Conclusions and recommendations
Approach to stage 1
• WebTAG Guidance on Transport Appraisal:
– Understand the current situation– Understand the future context– Consider the need for intervention and objectives to
address that need– Identifies/ determine the region of impact
Approach to stage 1 (cont.)
Evidence from Previous Studies• Used evidence from SW Peninsular Route Strategy • Consideration of evidence and data from previous studies including:
– London to South West and South Wales Multi-Modal Study 2002– A303/A30 Corridor Management Study Problem Identification Report– South West Stress Mapping March 2012– A303 A30 A358 Corridor Improvement Programme: Economic Impact Study and
Sectional Economic Analysis January 2013 – A303 Scoping Study July 2013
Additional Evidence gathered from:– Local Authority Local Transport Plans– Strategic Economic Plans– Local Transport Boards– Stakeholders– Consultation feedback
Background and previous work
• Improvements to A303 considered over many decades
• 2002 - London to South West and South Wales Multi-Modal Study (SWARMMS).
• 2007 - the cancellation of the Amesbury to Berwick Down Scheme (Stonehenge)- the SWARMMS strategy could no longer be pursued
• 2011 - A303 Working Group established
• 2013 - A303 Working Group presented findings, resulted in A303 Scoping Study- Following the 2013 Spending Review Government announced that it would identify and fund solutions to tackle some of the country’s most notorious hotspots.
• 2014 - January: Initial Stakeholder Meeting
- April: Scope Finalised
A303 / A30 / A358 Corridor Characteristics
• Part of HA SRN (except A358)
• Part of TEN-T network
• Strategic importance to access South West
• 195 km
• 63% Dualled, 37% Single carriageway
• Speed limits 30 – 70mph
• Strategic and local function
• Route Usage• Business• commute• other• leisure
• HGV proportion 8-11%
• High seasonal impact
Current Route Performance
• Considered following factors/measures of performance– Traffic Flow– Congestion and “Stress”– Journey Time Reliability (OTRM)– Safety– Environmental considerations
• Comprehensive robust and current data used derived from HA, DfT, Defra and Local Authority sources.
Current Average Daily Traffic Flows (October 2013)
2013 Summer Additional Traffic (to October Average)
Current 2013 Neutral Month Stress
Current 2013 Summer Month Stress
Journey Time Reliability
Based on HA On Time Reliability Measure against a historic reference travel time.
Personal Injury Accidents
A303/A30/A358
Entire Corridor
• 876 personal injury accidents
• 22% severity ratio • Average 175 PIA/yr• Average 4.5 PIA per km
However• Comparable to national
average rates• Corridor improvements -
30% reduction in year on year accident rate since 2008
36
154
686
5 Year PIA Record (2008 – 2012)
Fatal Serious Slight
Personal Injury Accidents (2)
24
12
Fatal
Unimproved Sections Rest of corridor
24 = 67% of all fatal accidents on 37% of the corridor route length
61
93
Serious
325361
Slight
77.5
195.8
Route length (km) within Corridor
Fatal and Serious Accident Locations: Unimproved sections
12%
6%
24%
7%
1%
1%
12%
13%
25%
A303 Amesbury to Berwick Down (S-tonehenge)
A303 Wylye to Stockton Wood
A303 Chicklade Bottom to Mere
A303 Sparkford to Ilchester
A303 Podimore Roundabout
A303 Cartgate Roundabout
A303 South Petherton to Southfields
A358 Southfields to M5 (Junction 25)
A303 Southfields to Honiton
NB. This does not take into account differential section lengths
Environmental Key Considerations
Cultural Heritage• Stonehenge WHS
Noise• 23 First Priority Locations
Landscape and Boidiversity associated with AONBs at • Cranborne Chase and West Wiltshire Downs• Blackdown Hills
Flooding Designations
• Stretches of route are adjacent to or cross many water courses and rivers
• Recent events 2013/4 highlighted flood risk
• Deptford flooding due to land run off
• Flood plan now in place
Future Conditions on the Corridor
• Future conditions on the corridor will be influenced by:• Background traffic growth due to changing social,
demographic and economic factors• Specific growth proposals for the corridor, region or beyond.
• Key developments and growth expected at for example Exeter, Stonehenge Visitor Centre, Solstice Park and Andover.
• Growth agenda reviewed in LEP’s Strategic Economic Plans, City Deals, Local Authority plans
• Developments adjacent to the corridor have the following allocations up to 2031
Location Houses JobsEast Devon 7000 10000
Exeter 7000 3000
South Somerset 9000 5000
Taunton Deane 14500 10000
Wiltshire 26000 12000
Test Valley 3000
Total 66500 40000
Future Conditions on the Corridor (2)
• However further into the South West Peninsula are other key proposals such as : • Over the SWP a total of
242,000 additional households and 150,000 new jobs are planned by 2031
• Tempro growth estimates households and jobs will grow by:
• 9% by 2021, • 20% by 2031 and • 30% by 2041• Jobs grow by between 4 and
6%
• Applied growth to base traffic flow data for congestion
Location Houses JobsCornwall 23000 11000
Plymouth 47000 4000
West Devon 3000 1500
Torbay 18000 10000
South Hams 3000 3000
Teignbridge 6000 5000
Total 100000 34500
Committed Highway Network improvements • A303/A3088 Cartgate Roundabout• M5 J25• Yeovil Western Corridor• SMART motorways planned schemes• Bullington Cross A303/A34 junction• Exeter PUA Scheme (near M5 J30)• East Anton A303/A3093 junction
Future Growth Locations Adjacent to the Corridor
Future Traffic Flow Growth
Future Year Stress Levels
2021
2041
Evidenced need for intervention
• Stage 1 has examined route conditions based on congestion, journey times, safety and environmental considerations.
• Clearly the single carriageway sections experience the worst conditions• Building on the growth agenda for the region conditions will deteriorate• The following key sections have initially been identified for further
investigation in Stage 2:– Amesbury to Berwick Down– Chicklade Bottom to Mere– Sparkford to Ilchester– South Petherton to Southfields– Southfields to Honiton
• Traffic modelling will fine tune the assessment of impacts and solutions• No definitive solution for sections identified
Intervention-specific objectives
• Based on the evidenced need for intervention the following objectives are proposed against which potential investment options will be assessed
Strategic Objectives
Supporting Economic Growth
Facilitate growth in employment at key centres and locations along the A303/A358/A30 corridor
Facilitate growth in housing a key development hotspots along the corridor
Operational Objectives
Capacity Reduce delay and queues that occur during the peak hours and seasonal times of the year
Resilience Improve the resilience of the route such that the number of incidents and the effect of accidents is reduced
Safety Reduce the number of collisions on the A303/A358/A30 corridor
Connectivity Improve the connectivity of the South West to the rest of the UK, to reduce peripherality and improve business and growth prospects.
Environmental Avoid unacceptable impacts on the surrounding natural environment and landscape and optimise the environmental opportunities and mitigation that the intervention could bring
Conclusions and recommendations
• Stage 1 examined route conditions based on congestion, journey times, safety and environmental considerations which identified key issues for the unimproved sections
• Specific sections have been identified for further investigation in Stage 2
• It is recommended that in parallel to Stage 2 a strategic traffic model be updated to be able to robustly appraise the schemes on a region wide basis
Approach to stage 2
• In Stage 2 the process involves:• Following WebTag Transport Appraisal process
– Option generation building on existing work– Sifting– Drafting of an Options Assessment Report– Confirm Appraisal Specification Report
– Timing – end of July 2014– Sifting to examine
• Value for money • Deliverability • Affordability
Next steps
• Continue with stage 2 of study work to develop a range of options to address the issues identified.
• Convene another meeting of the Reference Group in early August to discuss findings and options to be considered in more detail in stage 3.
top related