Attenuation pond · Drainage

Attenuation pond at km 56.7

Demo

A23-PD-0002 · A23 Beira Interior, Portugal · Northbound

Low criticalityExpired1 open defect

Condition: 3Fair; Index 61 of 100. Loses 1.8 a year.
Remaining life: 28 years; Installed 2004, 50-year life
Replacement value: €74k; 1,650 m³
Next inspection: 12 Nov 2026; In 12 daysLast inspected 12 Nov 2025

Inventory and condition

What it is and how it is wearing

Type: Attenuation pond (Drainage)
Construction: Vegetated retention pond
Quantity: 1,650 m³
Location: A23 Beira Interior, Northbound
Coordinates: 39.67645, -7.72850
Installed: 2004
End of design life: 2054

Component condition

InletGood
Outlet controlGood
EmbankmentPoor

Condition history

Inspected condition indexForecast to handback, 2032Bands show grades 1 (top) to 5.

Show as a table

Condition index at each inspection
Date	Index	Grade	Inspector
14 Nov 2017	75	Good	Pedro Almeida
14 Nov 2018	76	Good	Sofia Pinto
14 Nov 2019	76	Good	Pedro Almeida
13 Nov 2020	69	Good	Sofia Pinto
13 Nov 2021	68	Good	Pedro Almeida
13 Nov 2022	68	Good	Sofia Pinto
13 Nov 2023	65	Good	Pedro Almeida
12 Nov 2024	66	Good	Sofia Pinto
12 Nov 2025	61	Fair	Pedro Almeida

People and organisations

Who is responsible for it

7 linked

OwnerContractorConsultantInsurerGrantor

Asset ownerJoão Martins, A23 Beira Interior concession companyAccountable for condition, renewal and handbackjoao.martins@a23-beira-interior-concession-company.example
Asset managerMiguel Costa, A23 Beira Interior concession companyKeeps the record, plans inspections and worksmiguel.costa@a23-beira-interior-concession-company.example
Maintenance contractorCatarina Gomes, Beira Conservação ViáriaRoutine and reactive maintenance, defect repairscatarina.gomes@beira-conservacao-viaria.example
Inspection consultantPedro Almeida, Estrela Inspeções TécnicasPrincipal and general inspectionspedro.almeida@estrela-inspecoes-tecnicas.example
Original contractorSerra ConstruçõesWorkmanship warranty and defects liability
InsurerMeridian Infrastructure InsuranceProperty damage and third-party liability cover
GrantorPortuguese granting authorityReceives the asset at handback in 2032

History

Inspections, works, defects and notes

Note: Note4 Oct 2026
Access needs a lane closure; book overnight.
Miguel Costa
Defect: Ponding19 Jul 2026Open
Category 2. Made safe; permanent repair scheduled.
Catarina Gomes, Beira Conservação Viária
Note: Note22 Jun 2026
Spares held at the maintenance depot.
Miguel Costa
Inspection: Drainage survey12 Nov 2025
Grade 3, index 61. Silt at 30% of gullies; minor root ingress.
Pedro Almeida, Estrela Inspeções Técnicas
Inspection: Routine inspection12 Nov 2024
Grade 2, index 66. Free-flowing; gullies clear.
Sofia Pinto, Estrela Inspeções Técnicas
Inspection: Drainage survey13 Nov 2023
Grade 2, index 65. Free-flowing; gullies clear.
Pedro Almeida, Estrela Inspeções Técnicas
Inspection: Routine inspection13 Nov 2022
Grade 2, index 68. Free-flowing; gullies clear.
Sofia Pinto, Estrela Inspeções Técnicas
Inspection: Drainage survey13 Nov 2021
Grade 2, index 68. Free-flowing; gullies clear.
Pedro Almeida, Estrela Inspeções Técnicas

Liability and warranty

Who pays if something goes wrong

2004200820122016202020242028

Workmanship warrantyExpiredSerra Construções1 Aug 2004 to 1 Aug 2007, ended 234 months ago. Materials and workmanship of the works.
Defects liability periodExpiredSerra Construções1 Aug 2004 to 1 Aug 2006, ended 247 months ago. Defects notified by the concession company after handover.

Today

Liability by area

Who carries each liability
Liability	Responsible	Terms
Routine maintenance	Beira Conservação Viária	Operations and maintenance contract, performance-based
Defects	A23 Beira Interior concession company	All warranties expired; the concession company carries the risk
Renewal	A23 Beira Interior concession company	End of design life around 2054
Third-party damage	Meridian Infrastructure Insurance	Costs recovered from the at-fault party where known; €5,000 excess
Handback condition	A23 Beira Interior concession company	Grade 3 or better at handback in 2032

Handback

Handback to the grantor in 2032Portuguese granting authority

3RequiredFair or better3ForecastFair

Forecast to meet the handback standard at the current rate of wear.

Claims

No claims recorded against this asset.

Nearest assets on A23 Beira Interior

4Variable message sign at km 56.0A23-VM-0003 · 0.7 km away
1Weather station at km 57.6A23-WS-0002 · 0.9 km away
3Attenuation pond at km 55.5A23-PD-0001 · 1.2 km away
2Road markings at km 58.2A23-RM-0007 · 1.5 km away
1Sign gantry at km 54.5A23-GN-0006 · 2.2 km away

All 224 assets on A23 Beira Interior

Illustrative record generated for the demo. Names, organisations, contacts, dates and amounts are fictional.

Loading asset record…

Date

Index

Grade

Inspector

14 Nov 2017

Good

Pedro Almeida

14 Nov 2018

Good

Sofia Pinto

14 Nov 2019

Good

Pedro Almeida

13 Nov 2020

Good

Sofia Pinto

13 Nov 2021

Good

Pedro Almeida

13 Nov 2022

Good

Sofia Pinto

13 Nov 2023

Good

Pedro Almeida

12 Nov 2024

Good

Sofia Pinto

12 Nov 2025

Fair

Pedro Almeida

Liability

Responsible

Terms

Routine maintenance

Beira Conservação Viária

Operations and maintenance contract, performance-based

Defects

A23 Beira Interior concession company

All warranties expired; the concession company carries the risk

Renewal

A23 Beira Interior concession company

End of design life around 2054

Third-party damage

Meridian Infrastructure Insurance

Costs recovered from the at-fault party where known; €5,000 excess

Handback condition

A23 Beira Interior concession company

Grade 3 or better at handback in 2032

Attenuation pond at km 56.7

What it is and how it is wearing

Component condition

Condition history

Who is responsible for it

Inspections, works, defects and notes

Who pays if something goes wrong

Liability by area

Handback

Claims

Nearest assets on A23 Beira Interior

Ask your asset

Ask your asset

Attenuation pond at km 56.7

What it is and how it is wearing

Component condition

Condition history

Who is responsible for it

Inspections, works, defects and notes

Who pays if something goes wrong

Liability by area

Handback

Claims

Nearest assets on A23 Beira Interior

Ask your asset

Ask your asset