CONDITION APPRAISAL AND REMEDIAL TREATMENT

CIRIA Research Project RP692MASONRY AND BRICK ARCH

BRIDGES:

Dr. John Perry (Project Director)

Mr. Leo McKibbins (Project Manager)

Dr. Carlos Sicilia (Co-author)

Professor Clive Melbourne (Co-author)

Mr. Simon Walker (Co-author)

CONDITION APPRAISAL AND REMEDIAL TREATMENT

MASONRY AND BRICK ARCH BRIDGES:

The problem:The problem: Masonry arch bridge construction long abandoned in the UKMasonry arch bridge construction long abandoned in the UK

UK transport network dependent on masonry and brick archesUK transport network dependent on masonry and brick arches

Subjected to ever increasing traffic levels, speeds and loadsSubjected to ever increasing traffic levels, speeds and loads

Frequently 100+ years old Frequently 100+ years old

Some are damaged or have simply deteriorated graduallySome are damaged or have simply deteriorated gradually

NEED FOR MAINTENANCE, REPAIR AND STRENGTHENING

NEED FOR BEST PRACTICE GUIDANCE

UK InfrastructureUK Infrastructure

Key elements of UK transport infrastructure:Key elements of UK transport infrastructure:

Network RailNetwork Rail

London Underground LimitedLondon Underground Limited

British WaterwaysBritish Waterways

Highways AgencyHighways Agency

British WaterwaysBritish Waterways

canals circa 1800'scanals circa 1800's

Network RailNetwork Rail

railways circa 1850'srailways circa 1850's

London London UndergroundUnderground

underground circa underground circa 1900's1900's

Highways AgencyHighways Agency

motorways and trunk motorways and trunk roads circa 1960's roads circa 1960's onwardsonwards

canals circa 1800'scanals circa 1800's

railways circa 1850'srailways circa 1850's

underground circa 1900'sunderground circa 1900's

motorways and trunk roads motorways and trunk roads circa 1960's onwardscirca 1960's onwards

UK infrastructureUK infrastructure

Magnitude of the problem:Magnitude of the problem:

Masonry and brick arches comprise:Masonry and brick arches comprise:

40% of UK bridge stock (largest single group)40% of UK bridge stock (largest single group)

40,000 arch highway bridges40,000 arch highway bridges

33,000 railway arch spans33,000 railway arch spans

Very high proportion of British Waterways’ assetsVery high proportion of British Waterways’ assets

To present To present best practice guidancebest practice guidance

To facilitate knowledge sharingTo facilitate knowledge sharing

To provide an enabling documentTo provide an enabling document

To have national applicationTo have national application

To recommend maintenance strategies To recommend maintenance strategies

representing best value for moneyrepresenting best value for money

To provide impartial assessment and adviceTo provide impartial assessment and advice

Purpose of the ProjectPurpose of the Project

Main User GroupsMain User Groups

The report should provide guidance for:The report should provide guidance for:

Clients (asset owners and operators) in railways, Clients (asset owners and operators) in railways,

road and canals infrastructuresroad and canals infrastructures

Engineers (consultants and contractors)Engineers (consultants and contractors)

Maintenance managersMaintenance managers

ApproachApproach

Asset ManagementAsset Management

Structural Structural BehaviourBehaviour of masonry and brick arch of masonry and brick arch bridgesbridges

Loss of bridge performanceLoss of bridge performance

Condition appraisal and assessment of capacityCondition appraisal and assessment of capacity

Preventative, remedial and strengthening measuresPreventative, remedial and strengthening measures

MonitoringMonitoring

Environmental and heritage considerationsEnvironmental and heritage considerations

Future researchFuture research

MethodMethod

Literature reviewLiterature review

ConsultationConsultation

Case historiesCase histories

Assessment of informationAssessment of information

Conclusions and reportingConclusions and reporting

The Consultation ProcessThe Consultation Process

Involve individuals and organisations with experience Involve individuals and organisations with experience and expertise in brick and masonry arch bridges.and expertise in brick and masonry arch bridges.

Contribution of knowledge, user’s perspective, views on Contribution of knowledge, user’s perspective, views on content and material for inclusion (e.g. case-studies).content and material for inclusion (e.g. case-studies).

• Consultation WorkshopConsultation Workshop

• Questionnaires (available on CIRIA website)Questionnaires (available on CIRIA website)

• Ongoing consultation (RP692 Steering Group, Ongoing consultation (RP692 Steering Group, correspondence and interviews with individuals)correspondence and interviews with individuals)

Today - the Consultation WorkshopToday - the Consultation Workshop

Your opportunity to contribute to the reportYour opportunity to contribute to the report

Aiming to explore relevant issues, discuss report Aiming to explore relevant issues, discuss report content and define industry best-practicecontent and define industry best-practice

Open-forum discussion based around topics:Open-forum discussion based around topics:

Asset managementAsset management

Bridge performance, appraisal and assessmentBridge performance, appraisal and assessment

Maintenance and repairMaintenance and repair

The future of masonry and brick arch bridgesThe future of masonry and brick arch bridges

Asset ManagementAsset Management

What are the performance requirements for masonry and What are the performance requirements for masonry and brick arch bridges?brick arch bridges?

Are they likely to change in future?Are they likely to change in future?

How are masonry and brick arch bridge assets currently How are masonry and brick arch bridge assets currently managed?managed?

What are the main issues of concern for owners/managers What are the main issues of concern for owners/managers of these structures?of these structures?

What are the key issues to be dealt with in the report?What are the key issues to be dealt with in the report?

What guidance should be given as to best practice in asset What guidance should be given as to best practice in asset management?management?

Condition Appraisal and AssessmentCondition Appraisal and Assessment How is bridge condition currently appraised?How is bridge condition currently appraised?

What are the requirements for routine and special What are the requirements for routine and special investigations?investigations?

What are the causes of loss of performance and how can What are the causes of loss of performance and how can their effects be assessed?their effects be assessed?

What are the principal structural assessment methods?What are the principal structural assessment methods?

What are the main considerations in their use?What are the main considerations in their use?

What key issues should be considered in the report?What key issues should be considered in the report?

What guidance should be given as to best practice?What guidance should be given as to best practice?

Maintenance and RepairMaintenance and Repair

What are the principal factors in the selection and design What are the principal factors in the selection and design of remedial works?of remedial works?

How can future maintenance requirements best be How can future maintenance requirements best be assessed?assessed?

Which strategies and techniques have proven effective, Which strategies and techniques have proven effective, and which ineffective, in the past?and which ineffective, in the past?

What key issues should be addressed in this report?What key issues should be addressed in this report?

What guidance should be given as to best practice in this What guidance should be given as to best practice in this area?area?

The FutureThe Future

What is the outlook for masonry and brick arch bridges in What is the outlook for masonry and brick arch bridges in the future?the future?

What areas would benefit from improved knowledge and What areas would benefit from improved knowledge and experience?experience?

Are there any promising new developments in the areas Are there any promising new developments in the areas discussed?discussed?

What lessons have been learned from our experience with What lessons have been learned from our experience with these structures to date?these structures to date?

How can we best ensure the long-term serviceability of How can we best ensure the long-term serviceability of these bridges as part of our transport infrastructure?these bridges as part of our transport infrastructure?

Producing the report: Producing the report: what happens now?what happens now?

Ongoing consultation processOngoing consultation process

Issue and return of Questionnaires Issue and return of Questionnaires

Direct consultation via correspondence and/or Direct consultation via correspondence and/or interviewsinterviews

All contributions gratefully receivedAll contributions gratefully received

Benefit of advice, knowledge, experienceBenefit of advice, knowledge, experience

Case-studies illustrating good or poor practiceCase-studies illustrating good or poor practice

Photographs, diagrams, illustrationsPhotographs, diagrams, illustrations

Closing PointsClosing Points

Thank you for your contribution today!Thank you for your contribution today!

Please visit the CIRIA website and complete and Please visit the CIRIA website and complete and return a Questionnairereturn a Questionnaire

Any further contributions to the report, ideas or Any further contributions to the report, ideas or discussion of its content, should be directed to discussion of its content, should be directed to Leo McKibbins (Mott MacDonald)Leo McKibbins (Mott MacDonald)