PROJECT SHEET HOLENDRECHT - MAARSSEN, THE RECONSTRUCTION OF A2 MOTORWAY

INTRODUCTION FEATURES Boskalis was the lead contractor on the Client Rijkswaterstaat ‘Reconstruction of A2 Motorway (Dutch Directorate General for Public Holendrecht-Maarssen’ project, a part of the Works and Water Management), integral upgrading of the A2 between Infrastructure Department and . The A2 is one of the country's busiest motorways. Rijkswaterstaat has Location A2 Motorway, Utrecht – Amsterdam redesigned the road over this entire section to Period October 2006 – mid-2012 prevent future gridlock. Every day, 180,000 cars pass here. The traffic Contractor A2HoMa consortium problems between the Holendrecht and (Boskalis, KWS, Mourik) Oudenrijn intersections are now a thing of the Sub-contractor Van Hattum en Blankevoort past. (engineering structures), Vialis (DVM),

Holland Scherm (noise barriers) ASSIGNMENT A seventeen-kilometer-long section of the A2 Type of contract Design & Construct motorway between Holendrecht and Maarssen needed to be widened from 3 or 4 lanes to 5 or 6 lanes in both directions. The problems for drivers associated with the work had to be kept to a minimum. It was decided to build a new motorway alongside the existing one first. Once the new road had been completed, work started on the transformation of the old motorway. Boskalis adopted this approach in response to the public-driven network management that is a goal of the client. Six twin viaducts, seven bridges for agricultural traffic, two intersecting tunnels and one bicycle bridge were built above and below the new motorway. Changes were also made to the access roads, and the entrances and exits at Vinkeveen, and Breukelen. A The assignment included the construction of a new Dynamic Traffic Management system A One part of the work consisting of traffic signal systems, ice B Aerial photo from 2007

B 09 — 2014 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved. Noise barrier: Engineering structures: Crash barrier: Asphalt: Sand deliveries: Length: QUANTITIES Abcoude, VinkeveenandBreukelenwas were openedinMarch2011.Theworkat The fivelanesbetweenHolendrechtandMaarssen SCHEDULE of 45kilometerscrashbarrier. included drainageinstallationandthepositioning Work13 largeculverts. onthissectionalso management system,includingtheconstructionof Alterations werealsomadetothewater installed overadistanceof4.5kilometers. exit roads.Noise-suppressionfacilitieswere was alsoinstalledontheA2,andentrance Center andsignposting.DynamicPublicLighting a camerasystem,linkstotheTraffic Management MonitoringPoints, monitoring, BasicInformation sub-contractor Vialis. Installations, weretheresponsibilityof Dynamic PublicLightingandTraffic Regulation Dynamic Traffic Managementsystems,including sub-contractor Van The HattumenBlankevoort. contract. Thetwinviaductswerebuiltby Rijkswaterstaat underaDesign&Construct KWS andMourik,executedtheworkfor thatincludedBoskalis, The A2HoMaconsortium, CONTRACTING CONSORTIUM completed inmid-2011. C 4.5 kilometers 22 structures 45 kilometers 690,000 tonnes 2,500,000 m 17 kilometers 3 RECONSTRUCTION OFA2MOTORWAY HOLENDRECHT -MAARSSEN,THENETHERLANDS C a pipeline to the site. a pipelinetothesite. unitpumpeditthrough byshiptoLoenen,whereanearth-pumping transported SeaCanaland design. ThesandforthisassignmentwastakenfromtheNorth engineering companyHydronamicexecutedthiscomplexgeo-engineering 7 metersofpeatontoptheunderlyingPleistocenesand.Boskalis'in-house ground largelyconsistsofapeat-meadowareawithlayerapproximately alongsidetheexistingroad.Acomplicatingfactorherewasthat surface During thebuildingofnewmotorway, Boskaliscreatedasandbankonthe UNUSUAL TECHNIQUESANDCHALLENGES approach. based onfunctionalspecificationsinlinewiththeSystemsEngineering amendments, andlocationmanagement.Designexecutiondesignwere work. Ourroleincludedrisk,qualityandfinancialmanagement,managingany management, andwewereresponsiblefortheday-to-daymanagementof As theleadcontractor, Boskaliswasresponsibleforintegralprocessandproject ROLE OFBOSKALISNEDERLAND the required traffic flows on the A2 motorway and intersecting local roads. and intersectinglocalroads. the requiredtrafficflowsonA2motorway traffic managementduringtheworkandtookextensivemeasures tomaintain that werehometoloach,batsandbankswallows.Boskaliswas responsible for process. Theworkwasexecutedunderguidanceofecologicaladvisers inareas applications. Specialfloraandfaunahadtobetakenintoaccount duringthis andmanagedthe Boskalis completedthepreparationsforrequiredpermits LOCATION MANAGEMENT

2011. TheunderlyingroadnetworkwascompletedinDecember2011andopenedmid-2012. wascompletedinDecember2010andopenedMarch The workinfullswing.A2motorway www.boskalis.com [email protected] F +317869555 T +317869000 The Netherlands 3350 AAPapendrecht PO Box43 Royal BoskalisWestminster N.V.