This exhibition is an opportunity for local people to view and comment upon the preferred design for the Botley Bypass.

The progression of the scheme will be subject to securing planning permission and

funding.

Provide background for the Botley Bypass

Describe the technical work supporting the

bypass project

Describe the proposed route of the new

bypass

Describe potential mitigation measures for

the new bypass

Seek local views on the proposals to inform the

design process

www.hants.gov.uk

1. Welcome

Please take a look at the exhibition

boards, ask questions and complete

a questionnaire.

Hampshire County Council is developing a scheme for a new bypass for Botley. This exhibition aims to:

2. Botley Bypass Background

Botley Bypass has been proposed for many years and a route is formally safeguarded

in both the Eastleigh Borough and the Winchester City Local Plans.

Botley experiences a significant amount of traffic travelling along the A334 Botley High

Street, particularly during peak periods, causing noise and air quality issues and

difficulties for pedestrians and shoppers wishing to cross the High Street. The High

Street has been identified by Eastleigh Borough Council as an Air Quality Management

Area, where improvements are needed. Congestion along the route causes journey

time delays with stop-start conditions during peak periods.

Survey work has identified that whilst approximately 20% of traffic on the A334 Botley

High Street is local traffic, over 80% is through-traffic which has origins and

destinations outside of Botley Village. The through-traffic is largely associated with

vehicles travelling between the Fareham/eastern Hampshire areas and the North

Hedge End area/Winchester in the north. This includes traffic diverting from the

congested M3 and M27 motorways at peak times.

Forecast levels of new development in the wider Botley area over the next 20 years

combined with traffic growth is likely to compound existing traffic issues. The

completion of Whiteley Way associated with the build out of the proposed North

Whiteley development may also increase through-traffic in the Botley area.

For these reasons the justification for a bypass for Botley is now much greater than in

previous years. A new bypass could bring significant benefits to the High Street in

terms of reduced traffic volumes, improved pedestrian accessibility, improved air

quality, reduced noise pollution and enhanced quality of place.

3. Botley Bypass Previous Work

Key issues identified in 2013 which

required further consideration were as

follows:

• The proximity of the route to the high

voltage 132kV overhead power lines.

• The nature and location of the proposed

new bridge and associated abutments

across the River Hamble.

• The interface of the route with key

statutory undertakers plant including

Portsmouth Water 40” main water

supply, Esso pipelines and Southern

Gas Network supplies.

In 2013 a study was undertaken on behalf of Eastleigh Borough Council which investigated route options for the Botley Bypass which comprised a 1km on-line widening

of Woodhouse Lane and a 1.8km bypass from Woodhouse Lane to a new junction with the A334 and A3051. Outline design work was undertaken and options were

assessed.

Extract from Waterman Drawing CIV13798/C/SA/03/001/A02

Extract from Waterman Drawing CIV13798/C/SA/03/001/A02

4. Preferred Bypass Route

Botley Bypass Location Plan

On 31 March 2016 the County

Council’s Executive Member for

Environment and Transport

recommended that the historic route

for Botley Bypass, together with

design updates at the western end be

confirmed and that necessary design

and development work for the scheme

be progressed. In order to inform the

design process approval was also

given for consultation to be

undertaken on the preferred route.

In accordance with the

recommendation, design work has

recently been progressing for the

Botley Bypass, building upon work

previously undertaken for Eastleigh

Borough Council.

The construction cost (2015 prices) for

the Botley Bypass and the online

widening works on Woodhouse Lane

would be approximately £24 million.

New

Roundabout

New

Roundabout

Botley

Bypass Woodhouse

Lane Widening

& Realignment

A334

B3354

A3051

Maypole

Roundabout

A334

A334

• The bypass would be 1.8km in length and 7.3m wide

• The proposed route would be single-carriageway with a 40mph design speed

• The design includes a shared use footway / cycleway along the southern side

• The following modifications to the historically safeguarded route have been

made:

• The crossing of Winchester Street at the western end of the bypass

has been moved south to avoid costly statutory undertakers plant and

to reduce the impacts upon third party land.

• The River Hamble crossing has been adjusted, however it cannot yet

be totally fixed until ground investigations and ecological

investigations have been completed.

Profile of Bypass route compared to existing ground levels.

Extracts from EC Drawing EC/RJ567629/02/004/A - 21/04/16

5. Botley Bypass Design

In association with construction of the Botley Bypass it is planned to improve

Woodhouse Lane to help accommodate likely increases in traffic flow.

• It is proposed to widen Woodhouse Lane to 7.3m along 1.1km of its length

from just south of the existing junction with Winchester Street to the A334 at

Maypole roundabout.

• The improvements would include provision for right-turning traffic, an

improved facility for pedestrians and cyclists, and the realignment of a small

section of the road to the south of Woodhouse Gully to improve forward

visibility.

• Maypole roundabout is to be improved as part of committed off-site works

associated with forthcoming new development at Boorley Green.

Profile of Woodhouse Lane widening along its length

Extracts from EC Drawing EC/RJ567629/02/003/A - 21/04/16

6. Woodhouse Lane Design

7. Traffic Modelling

What is the Sub-Regional Transport Model (SRTM)

The SRTM is capable of assessing the impacts of transport schemes across the Solent sub-

region by forecasting changes in travel demand, road traffic, public transport patronage and

active mode use over time as a result of changing economic conditions, land-use policies

and development, and transport improvement and interventions (schemes).

The SRTM is a suite of linked models comprising the following components:

• The Main Demand Model (MDM) which predicts when, where and how journeys are

made.

• The Gateway Demand Model (GDM) which predicts demand for travel from ports and

airports.

• The Road Traffic Model (RTM) which determines the routes taken by vehicles through

the road network and journey times, accounting for congestion;

• The Public Transport Model (PTM) which determines routes and services chosen by

public transport passengers.

• A Local Economic Impact Model (LEIM) which uses inputs including transport costs to

forecast the quantum and location of households, populations and jobs.

All known developments for the Local Plan period and committed (funded) highway

schemes are included within the model scenarios to provide the most accurate

representation of future year conditions.

SRTM Coverage

The traffic and transport impacts of the proposed Botley Bypass have been assessed using the Solent Transport Sub Regional Transport Model.

The SRTM has been used to compare:

Year 2036 Do Minimum Scenario: including Local Plan Development in Eastleigh Borough

Vs.

Year 2036 Do Something Scenario: including Local Plan Development in Eastleigh

Borough plus Botley Bypass and associated infrastructure

8. Traffic Model Results

The traffic model output plots above show forecast changes in AM and PM traffic flows for the year 2036 through

Botley Village, comparing the Do Minimum scenario against a Do Something scenario where Botley Bypass is

implemented.

• The thick blue line represents a reduction in traffic along the A334 Broad Oak / High Street / Mill Hill

• To a lesser extent there is a decrease on the B3354 Winchester Road

• There is a slight decrease on Kings Copse Avenue

• The thick red line represents the traffic transferring onto the new bypass.

• There is an increase in traffic along Woodhouse Lane

• There is a slight increase in traffic on some of the key routes approaching Botley

2036 AM Peak Flow Difference (DM vs DS) 2036 PM Peak Flow Difference (DM vs DS)

The traffic modelling data provides a

robust evidence base which supports the

justification for a Bypass, due in part to

forecast levels of development in the wider

Botley area and traffic growth generally.

There will be significant benefits to the

A334 High Street through Botley due to

reduced traffic volumes.

Key:

Red Line = Increase

Blue Line = Decrease

Thicker line denotes larger change

Key:

Red Line = Increase

Blue Line = Decrease

Thicker line denotes larger change

9. Environment

Designated Sites A full Environmental Impact Assessment is being prepared for the scheme as part of

the planning process.

An Environmental Impact Assessment (EIA) is required to assess the potential

environmental impacts of all major schemes such as Botley Bypass. The aim of the EIA is

to protect the environment by ensuring that all potential impacts (either positive or negative)

are identified and, where appropriate, mitigation and enhancement strategies are

developed. The EIA will form a key part of the supporting information which will be required

to be submitted as part of a future Planning Application. The scope of the EIA is currently

being agreed with Statutory Consultees including the Environment Agency and Natural

England.

The preferred route for the Bypass crosses a number of locally designated sites which

need to be taken into consideration as part of the Environmental Assessment work.

In the upper reaches of the River Hamble, north of Botley Mill, the bypass would cross two

Sites of Importance for Nature Conservation (SINC), on either side of the river. Further

south from the point at which the bypass would cross, the River Hamble is designated at

European level as a Special Protection Area (SPA). Half way along its length Woodhouse

Lane crosses Woodhouse Gully. To the west of Woodhouse Lane Bushy Copse is

designated as a SINC on both sides of the Gully.

10. Environment

As part of the EIA a number of different topic areas need to be assessed. The first stage of the EIA involves the collection and review of all available baseline data along

with the identification of all potentially sensitive environmental features and receptors. Following a desktop appraisal, initial site specific survey work is undertaken to help

inform where more detailed survey work will need to follow on and to help build up a comprehensive evidence base which will be used to help identify appropriate

mitigation. Initial survey work is currently underway in order to help inform the design of the bypass. Some of the key topic areas are highlighted below.

Noise and Air Quality

Increases and decreases in noise levels are assessed in

relation to identified sensitive receptors including nearby

properties. Noise monitoring equipment is used to

identify existing levels of noise. Forecast changes in

traffic movements are used to predict the changes in

noise levels in the future both during construction and

post scheme completion. Whilst reductions in traffic

through Botley High Street are likely to lead to a

reduction in noise, conversely there is likely to be an

increase in other areas closer to the bypass route.

Botley High Street is an identified Air Quality

Management Area. Reductions in traffic will be quantified

and changes in air quality will be identified.

Ecology and Nature Conservation

Ecological surveys will be ongoing for several

months to help identify the types and numbers

of species (including protected) which could be

found on and around the site. Survey seasons

for each species vary depending upon potential

hibernation, migration, and breeding seasons;

hence the overall survey timescale can be

lengthy and in some cases as long as 24

months. As part of the ecological work stream a

Phase 1 Habitat Survey is used to help provide

an understanding of potential impacts.

Landscape and Visual Effects

The assessment of impacts upon the landscape

are assessed from identified viewpoints in the

vicinity of the preferred Bypass route and from

nearby notable features. Particular attention is

given to views from public paths or nearby

properties or roads. The impact upon trees is a

key issue and tree surveys are included as part

of the EIA in order to identify notable trees and

trees with Tree Preservation Orders. The

impacts upon heritage assets including listed

buildings are also assessed.

Water and Drainage

An assessment of the potential impacts upon

surface and ground water quality, drainage and

flood risk is a critical part of the EIA, which has

to be completed in accordance with a

substantial legislative framework.

A key issue along the route is the River

Hamble and associated flooding and

particularly flood risk during exceptional

circumstances. Predicted surface water run-off

from the new bypass is also a key area for

assessment.

11. Environmental Mitigation

Environmental Surveys

Assessment of scheme impacts

Identification of need for mitigation

Mitigation design informs highway

design

Bypass design finalised

The need for environmental mitigation will be identified for

each of the EIA topic areas following survey work. This may

result in modifications to the bypass design, or additional

features may be required to mitigate the environmental

impacts of the scheme.

Mitigation could include:

• Replacement / enhancement of ecological habitats.

• Relocation of protected species, (e.g. badgers).

• Noise attenuation measures (e.g. bunds, acoustic

fencing)

• Replacement landscape planting / screening.

• New and improved footway / cycleway provision.

• Sustainable Drainage Systems (SUDS).

• Flood management measures. Balancing Pond Swale

Bat Boxes Fish Ladder

Landscape Bund Acoustic Fence

Sustainable Drainage Mitigation

Ecological Mitigation

Noise Mitigation Badger Tunnel

Acoustic Fence & Bund

12. Where next?

June/July 2016

Public Consultation

Autumn 2016

Report to Executive Member for

Environment and Transport to provide

consultation feedback

2016/17

Transport Assessment

Progression of design

Environmental Impact Assessment

Business case

2017

Submission of Planning Application

2018/2019/2020

Delivery of Botley Bypass subject to securing funding

Contact us:

Strategic Transport

Hampshire County Council

The Castle

Winchester

Hampshire

SO23 8UJ

Email address: botley.bypass@hants.gov.uk

Phone:

0300 555 1388

What do you think?

Your views are important

Your feedback will help inform the design process for the Botley Bypass. A report will be taken to

Hampshire County Council’s Executive Member for Environment and Transport later in the year which

summarises the feedback from the consultation and highlights any amendments which may be required to

the scheme in light of comments received.

Please fill out a paper questionnaire to let us know what you think. Questionnaires are available at the

public exhibitions or alternatively go online at www.hants.gov.uk/botley-bypass to leave your comments.

This exhibition material is also available to download on this website.

Thank you for visiting the exhibition. We hope you found it informative.

www.hants.gov.uk