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research overview
  Advanced Matrix Indicator Scoping Study  
system   26. July 2013 at 13:01  ·  views: 26513  back to rraf

Project Background

It is the responsibility of the Highways Agency to ensure that structures on the Trunk Road and Motorway network in England are maintained in a safe and serviceable condition, and that the maintenance budget Is spent cost effectively, on the highest priority needs. It is also an objective that highway structures are constructed and maintained using materials and techniques to ensure that they maximise durability, minimise maintenance and are sustainable. The Highways Agency also has higher level objectives such as 'Journey time reliability', 'Managing down costs', 'Speeding up delivery', as well as ensuring there is a safe and serviceable network, being a responsible owner, and managing traffic and influencing journeys.

In order to contribute to these business drivers it is essential for the Agency to understand the condition of its infrastructure assets. However to understand the current condition of the bridge infrastructure at a detailed level, and how it has changed over time, it is necessary to undertake some form of 'benchmark' survey. The last such surveys were undertaken by Maunsell in 1989, which reviewed the condition of 200 concrete bridges; and Atkins on the upper surfaces and soffits of prestressed concrete bridges in 1993. These surveys were highly revealing and provided a strong impetus to the need for an enhanced maintenance regime, and improvements in design to include durability considerations.

Alongside the condition of the structures, there is also a need to review the reliability of information feeding into the Agency's Structures Management Information (SMIS), and the adequacy of the Agency's standards, particularly BD57/BA57 'Design for Durability', to ensure that decisions made, whether on a technical, operational or strategic level, are robust.

There is a perceived need to develop future guidance issued to Agents for structural maintenance works, and to feed into other strategy documents, and into detailed standards and specifications. There is also a need to support future Highways Agency DFT/Treasury business cases to justify structures maintenance expenditure nationally.

Additionally, there is an underlying need to ensure improved safety of the infrastructure, provide confidence in support of technical governance requirements, and to support future maintenance strategies.

Project Objectives

Overall this project requires a statistically significant sample survey of a cross-section of the HA owned stock of highway structures, to identify condition, and changes over time, it would assess whether structures are deteriorating or improving in condition, and whether current levels of maintenance spending are adequate and maintenance practice is effective. (The conclusions drawn from this survey would be linked to those from the Maunsell survey of 200 concrete bridges in 1989, and to the Atkins report on prestressed concrete bridges in 1993, although the current work is not limited to concrete structures).

The work is being undertaken in phases, starting with a scoping study, including an initial interrogation of SMIS data, a survey of Agents, by questionnaire and with some face to face interviews. There will be a limited physical examination of a sample of structures, including same testing, some of which will have been included in the earlier surveys (referred to above), and a cross-section of types, forms and materials (RC, PC, and composite), of different ages. A final phase will analyse the collected data, report and make recommendations, including advice on suitable deterioration models.

At the completion of the Project a report will be required with an assessment of the condition of a cross-section of the stock of structures over time, with an examination of the effectiveness of current maintenance policy, with recommendations on future maintenance policy and actions, including changes to standards, and other guidance.

It will be used to assist future maintenance guidance for Agents, and to inform other HA strategy documents, and detailed standards and specifications. Also to support future HA DFT/Treasury business cases to justify structures maintenance expenditure nationally.

The key asset management topic under consideration is the development of an Integrated Asset Management Strategy (IAMS) which encompasses optimum maintenance strategies, KPI's, whole life costing, network valuation, and input into Continuous Value Management (CVM) guidance. The State of Bridge Infrastructure project will contribute towards the development of this strategy.

The Contract is being arranged in Phases, and the current Task will constitute Phase 4a only. There is no presumption that work under Stage 4a will precede other Stages or Phases, or that the work in any Stage in Phase 4 will be undertaken by the same Task Contractor.

Project Summary

For each Stage the Contractor shall produce interim reports as specified. A final report shall be produced at the conclusion of Stage 4c. Four hard copies will be required together with electronic copies in PDF and Word formats.

The final report shall include a review of the earlier phases of this study and be fully comprehensive, covering all of the phases of this study with executive summary, conclusions and recommendations together with a Task Brief for future benchmarking and condition assessments.

When required by the Designated Officer, in accordance with the Framework Arrangement procedure, the Contractor shall produce Highways Agency draft documentation. These drafts shall be. in the format of existing Highways Agency published documents, Advice Notes, Standards and Specification or otherwise, or partial drafts as may be required, Ail such drafts snail be submitted to the Designated Officer in hard copy and electronic format (word-processed to Word97 standard).

At the completion of the Study the Stage 4c Contractor shall provide and deliver a presentation (Powerpoint) to the Task Management Steering Group bringing together all of the strands of the various Phases of the State of Bridge Infrastructure with conclusions and recommendations.

The Contractor shall make recommendations and produce a Task Brief for future benchmarking and condition assessments.

All output is to be independent and confidential to the Highways Agency.

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current project status
< 100k EUR
< 6 months
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record created by system
on 26.07.2013 13:01
last modified by system
on 26.07.2013 13:01