PlannedWorksMarktconsultatie

Natuurbrug Westerheide

Name: Natuurbrug Westerheide
Creator: Provincie Noord-Holland
Published: 2026-02-09
License: https://creativecommons.org/publicdomain/zero/1.0/
Keywords: wooden construction, ecoduct, nature bridge

Provincie Noord-Holland · Marktconsultatie · 1 lots · 411487

4 of 6 core insights found

Measures presence, not accuracy · documents remain authoritative

ScopeAdvicePoints of attentionSuitability requirementsAward criteriaTimeline

Type

Works

45221110 · Bridge construction

Estimated value

Not published

To deadline

Ongoing

Knock-outs

n/a

exclusion grounds

Award basis

Best price-quality ratio

Assess manuallyconfidence moderate

The province of Noord-Holland is conducting a market consultation regarding the technical and economic feasibility of a wooden construction for the new nature bridge over the N525.

Works · Marktconsultatie · National procedure

Contracting authority

Provincie Noord-Holland

Contract type

Works

Marktconsultatie

Estimated value

Estimate not published

Submission deadline

Ongoing

Scope

National

National procedure

Lots

1 lots

Main CPV code

45221110

Bridge construction

Location

Netherlands

CharacteristicsCPV 45Workswooden constructionecoductnature bridge

01What is being requested

Realization of a nature bridge (ecoduct) over the Hilversumseweg (N525) between Laren and Hilversum. The province is exploring the possibility of using wood as a structural material for this ecological connection.

The province of Noord-Holland is preparing the realization of a nature connection over the Hilversumseweg (N525) in the Gooi. This project is known as Natuurverbinding N525 / Natuurbrug Westerheide and is the final link in a network of 6 nature connections in the Gooi. The nature connection crosses the N525 between Laren and Hilversum, between the Schaapskooi (former horse boarding stable) and the site of the Vitens drinking water pumping station. The province is exploring within this project the possibility of using wood as a structural material during the realization of the ecoduct (nature b

45221110Works

1Natuurbrug Westerheide—

02Strategic insight

“

Strategic insight · AI analysis

Focus in the response on the technical feasibility of wooden constructions in combination with moisture load and service life. Provide a global cost estimate in which a comparison is made between a wooden and a concrete variant. Pay specific attention to the management, maintenance, and inspection of a wooden construction.

Read automatically from the tender documents using AI. Always verify against the original documents.

03Points of attention

Important · 4

The construction must be resistant to long-term moisture load due to the ecological design (substrate and vegetation layers).Important

Account must be taken of fire safety and collision safety.Important

The province requests that no commercially confidential or business-sensitive information be included in the response.Important

The intended nature bridge is without recreational use.Important

04Value in context

Estimate not published

The contracting authority did not publish an estimated value — common for a large share of contracts. The EU threshold for werken is € 5,54 M, for reference.

05Likely competitors

#Likely bidderFitWins

1Boskalis Nederland B.V.SME9869×

2ENGIE Infra & Mobility B.V.SME9869×

3Dura Vermeer Infra Regionale Projecten BVSME9758×

4Heijmans Infra B.V.SME9765×

5KWS Infra B.V.SME9692×

6BAM Infra B.V.SME9677×

06Tender documents

TN571008 - EFE1 Vrijwillige aankondiging van voorafgaande marktconsultatie 20260209153950pdfFeb 9, 2026 · 137 KB

Marktconsultatie Natuurbrug WesterheidedocxFeb 9, 2026 · 71 KB

07Legal themes that may be relevant here

Advies 63> Meervoudig onderhandse aanbesteding voor het reinigen van wegen, straten en pleinen. Kan bij gunning op laagste prijs de indieni Advies 442> Europese openbare procedure voor een overheidsopdracht voor werken voor het ontwerpen en uitvoeren van integraal groot onderhoudComplaint upheld Advies 451> Beklaagden hebben op 29 mei 2017 een Europese openbare aanbestedingsprocedure aangekondigd voor een raamovereenkomst per perceel Advies 97> Europese openbare procedure met betrekking tot de vervanging van kunstwerken. Is de door de aanbestedende dienst opgegeven &#x27 Advies 48> Europese niet-openbare procedure voor werktuigkundige en elektrotechnische installaties van de nieuwbouw van een multifunctionel

08Frequently asked questions

What is the required construction material for the nature bridge?

The ecoduct must be realized exclusively using wood as a structural material. This aligns with the ambition to build more sustainably with a robust, safe, and well-manageable solution.

Which technical standards must the execution comply with?

All building and works must comply with current building and safety standards, such as the Bouwbesluit, VEER, and EN1090. Additionally, a maintenance and management plan for the service life of the bridge is required.

What experience and certifications are required for bidders?

Parties are sought with at least one year of experience in realizing wooden (green) bridges or ecoducts and knowledge of Dutch building standards and ecological certifications such as ISO 14001 or FELICITAS.

What distinguishes this ecoduct from a regular viaduct?

Unlike a regular viaduct, the superstructure of this ecoduct features an ecological design with substrate and vegetation layers, which results in a long-term moisture load.

How is the confidentiality of the information provided guaranteed?

The information provided by market parties will be treated confidentially and used solely for internal analysis and decision-making. The province will only use the received information in an anonymized form.

Automatically compiled from the official tender data and documents.

09Estimated value versus the market

p25
€ 1,4 mln

median
€ 3,6 mln

p75
€ 9,1 mln

deze opdracht

Gegunde waarden in CPV 45 · werken n=3159