Redevelopment of boulevard Aubanel in Miramas

  • Year of commitment : 2019

  • Green energies : Energy Efficiency
  • Sustainable mobility : Intra-urban mobility, Greenways, Pedestrian Mobility, Urban roads, Soft modes of transport, Bicycle path
  • Water cycle : Rain water, Other
  • Circular economy and waste management : Circular economy, Eco-Design, Optimization of ressources, Bio-based materials
  • Biodiversity & Ecosystems : / Urban ecosystem, Green and blue corridor, Ecoystem restauration, Ground recovery, Environment education /

  • 3 800 000 €
  • Builder
    LAQUET, EIFFAGE TP
  • Manager / Dealer
    City of Miramas

This redevelopment consisted of transforming a 2x2 city entrance lane into a 2x1 lane by maximizing the waterproofing of the roadway and transforming it into a green promenade.

The project has been the subject of environmental optimization on 6 axes: water management, energy savings, urban biodiversity, circular economy, soft mobility, adaptation to climate change.

Progress Status

Delivered

Data Reliability

Self-declared

Funding Type

Public

Website Enterprise / Infrastructure

 https://www.cylea.fr/actualites/livraison-du-chantier-zac-de-la-peronne/

Sustainable Development

    Offer new urban spaces for new uses:

    The main challenges: In recent decades, urban spaces have given a predominant place to automobile mobility to the detriment of the quality of a qualitative social meeting space with sidewalks often non-existent at the entrances to towns. Systematic use of the car was thus induced, which does not encourage meetings or physical exercise.

    The solutions implemented: Local residents and users benefit from an urban space dedicated to pedestrians and to soft modes of transport for the benefit of an outdoor activity with:

    - a wide and shaded pedestrian promenade;

    - an educational garden;

    - an event space for neighborhood associations.

    Living well in the city by facilitating soft mobility:

    The main challenges: Daily mobility practices have a significant impact on the well-being of city dwellers and the environment; promoting soft mobility is an effective alternative to the private car relieve congestion on saturated traffic axes, requiring no other energy than that provided by physical effort, makes it possible to limit the carbon footprint appearing among the measures envisaged to fight against global warming .

    The solution implemented: Taking into account soft modes with the creation of a greenway of 800m linear independent of general traffic. This greenway provides access to the city center and contributes to the neighborhood's soft modes network.

    In line with the elements exposed in the attractiveness section:

    The solutions implemented:

    - Creation of a new meeting place space for better social cohesion.

    Promote the development of urban biodiversity:

    The main issues:

    Preserving biodiversity is an integral part of reducing environmental damage. Preserving existing vegetation helps mitigate the impacts of infrastructure while preserving the quality of the landscape.

    The creation of a nature education zone educates residents and children about the place of these animals in our environments, and allows these species to be reintegrated into an urbanized environment.

    The reduction in light pollution also promotes the richness of the ecosystem made up of nocturnal fauna.

    The solutions implemented:

    - Preservation of existing vegetation;

    - Creation of a nature education zone: a botanical garden, a bird garden and shelters for insects;

    - Decrease in light pollution.

    Contribute to the mitigation of the effects of climate change:

    The main issues:

    The development of a wooded park in the heart of an urban island, by reducing mineralized surfaces, makes it possible to lower the temperature in the adjacent streets. With the conservation of the rows of umbrella pines and plane trees and the planting of 50 new trees, the project helps to strengthen the island of freshness effect.

    The choice of draining coatings with a higher albedo than conventional asphalt also contributes to the fight against urban heat islands.

    The rainwater sewerage network is saturated and no longer faces heavy rains.

    The solutions implemented:

    - Creation of the urban park;

    - Draining coatings with a higher albedo than conventional mixes;

    - Disconnection of the rainwater network and water infiltration.

    The responsible use of resources was a structuring approach of the project, developed under 3 axes :

    1 - the establishment of a circular economy on the site scale;

    2- restore water to its natural cycle;

    3- contribute to reducing the consumption of electrical energy.

    1 / Circular economy:

    The main issues:

    Avoiding the landfill of materials resulting from site deconstruction lengthens their life cycle and preserves non-renewable natural resources, one of the main challenges of the circular economy which aims to increase the efficiency of the use of resources.

    The construction of street furniture and mud walls made it possible to avoid the evacuation of 1,200 m3 of materials.

    In addition, significant overall energy savings: reduction in materials to be transported, materials to be landfilled (therefore a reduction in indirect impacts, inconvenience to users and residents) and fatigue of the road network adjacent to the building. construction site.

    The solutions implemented:

    - raw earth structures (walls and urban furniture) built with soil from the site,

    - pebble structures from the site.

    2 / The water cycle:

    The main issues:

    The draining properties, very important of the materials chosen, and the execution of the drainage basins provide a response to the needs of sustainable urban development avoiding the waterproofing of surfaces and effectively contributing to the major ecological issues of reconstitution of the natural water cycle by promoting its in-situ infiltration, also contribute to the fight against heat islands.

    The solutions implemented:

    - De-waterproofing of the road with a stabilized sand coating and revegetation of the old road;

    - Longitudinal parking was carried out in a mixture of stone and earth covered with GNT;

    - An alternative management of rainwater: execution of the basins allow infiltration directly into the water table.

    3 / Energy saving:

    The main issues:

    The road lighting technique makes it possible to limit the installed lighting power to obtain the level of illumination required for an urban road.

    Already planned with LED lanterns, this lighting has made it possible to reduce energy consumption for street lighting by an additional 30%.

    Energy savings are one of the priority areas of the energy transition. While energy consumption has a certain cost, it also has a very significant environmental impact.

    The solution implemented:

    The coated spaces have been thinned out compared to a traditional layout.

Testimony / Feedback

    The project has already been recognized for two reasons:

    - first, in 2019, by the French competition Capitals of Biodiversity, which since 2010, identifies, develops and disseminates best actions carried out by municipalities and intermunicipal French in favor of biodiversity. The project was selected in the catalog of exemplary actions of 2019.


    - then, in 2020, by the Institute of Roads, Streets and Infrastructures for Mobility (IDRRIM) which awarded it the Infrastructures for Mobility, Biodiversity and Landscapes prize with the Special Mention of the jury ; the IMBP prize highlights the links between biodiversity and landscapes, rewards the best projects carried out, in France or internationally, by the actors involved in the design, construction, management, maintenance, development, requalification and operation of mobility infrastructures in favor of the preservation, restoration and enhancement of ecosystems and biodiversity.

Governance

    EPAD West Provence

    Public Local Firm

    LAQUET, EIFFAGE TP

    Construction Industry

    City of Miramas

    Public

    The urban community has conceded the EPAD Ouest Provence. Governance is therefore tripartite between EPAD, SAN Ouest Provence and the city of Miramas.

    Boulevard Aubanel is included in the ZAC de la Peronne; its financing is ensured in the balance sheet of the ZAC.

    It has received grants from the Bouches du Rhône Department on the one hand and the RMC Water Agency on the other.

Sustainable Solutions

    Site-wide stormwater management

    The solutions implemented are:

    - De-waterproofing of the road with a stabilized sand coating and revegetation of the old road;

    - Longitudinal parking was carried out in a mixture of stone and earth covered with GNT;

    - An alternative management of rainwater: execution of the basins allow infiltration directly into the water table.

    The very important draining properties of the materials chosen, and the execution of the basins contribute to the reconstitution of the natural water cycle by promoting its in-situ infiltration.

    These solutions make it possible to respond effectively to the challenges of resilience of the community's stormwater networks in the event of an episode of heavy rains. They also contribute to the fight against urban heat islands , conventionally encountered in city entrances.

      • Water management


      Promote the development of urban biodiversity

      The solutions implemented are:

      - Preservation of existing vegetation by conserving the existing trees on the site

      - Reinforcement of the green network with the planting of more than 38,000 plants of all sizes, including meliferous plants

      - Creation of a nature education zone: a botanical garden, a bird garden and shelters for insects to ensure respect for the spaces created by the users of the promenade;

      - Reduction of light pollution with directional LED lighting and reduced thanks to the use of a lighter coating.

      Preserving biodiversity is an integral part of reducing environmental damage. Preserving existing vegetation helps mitigate the impacts of infrastructure while preserving the quality of the landscape.

      The creation of a nature education zone educates residents and children about the place of these animals in our environments, and allows these species to be reintegrated into an urbanized environment.

      The reduction in light pollution also promotes the richness of the ecosystem made up of nocturnal fauna.

          • Other

          Use of materials from the circular economy and rehabilitation of existing structures

          The solutions implemented are:

          - raw earth structures (walls and benches) built with the earth from the site and pebble structures from the site have consequently avoided volumes (approximately 1200 m3 x2) of materials to be evacuated and delivered to the site , and therefore avoid CO2 emissions.

          - the asphalt has been thinned out compared to a traditional arrangement to allow the level of night lighting to be lowered.

          - the base of one of the existing pavements has been preserved (no deep earthworks), only the surface coating has been redone.

          Avoiding the landfill of materials resulting from site deconstruction lengthens their life cycle and preserves non-renewable natural resources, one of the main challenges of the circular economy which aims to increase the efficiency of the use of resources.

            • Low-carbon materials/ infrastructure

          Photo credit

          Suez Consulting

          Reasons for participating in the competition(s)

          Environmental excellence declined according to 6 main themes:

          - water management: The waterproofing of the boulevard concerned more than 8,000 m². Alternative rainwater management has also been implemented with a partial disconnection of the road from the town's rainwater network and the construction of infiltration basins sized for a 50-year return rainfall.

          - energy savings: Beyond the LED lanterns, the lightening of the coatings made it possible to reduce the installed power for street lighting by an additional 30% for an equal luminous performance

          - urban biodiversity: With the conservation of rows of umbrella pines and plane trees, the planting of more than 38,000 new plants of all sizes and the installation of insect shelters allows the creation of a real urban eco-system. The nature education zone including a botanical garden and a bird garden supports this approach.

          - the circular economy: the construction of benches and mud walls made it possible to avoid the evacuation of 1,200 m3 of clay material, unsuitable for use as road backfill

          - soft mobility: the creation of an 800ml green lane independent of general traffic which allows access to the city center and contributes to the neighborhood's soft modes network

          - adaptation to climate change: the creation of an urban park reinforcing the existing plantations and the choice of draining coverings with a lower albedo makes it possible to strengthen the island effect of freshness and the resilience of the plantations.

          Building candidate in the category

          Grand Prix Infrastructure Durable

          Grand Prix Infrastructure Durable

          Green Solutions Awards 2020-2021 / France


          Author of the page

        • Mathilde PECNARD

          Smart & Resourceful Cities project developer

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