Bridges and Elevated Structures OPerations and Maintenanace Best Practices

Delhi Gurgaon Expressway India’s largest Access-Controlled Expressway in an Urban Environment

Background… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

… Background ,[object Object],[object Object],VIP Route Commuter’s Realm Tourist Paradise

Salient Features of the Development ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Enhancing Commuter Experience: Toll Operations… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

… Enhancing Commuter Experience: Safety… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

… Enhancing Commuter Experience: Future Innovations FREE FLOW TRAFFIC (BARRIER FREE TOLLING) NUMBER PLATE RECOGNITION WITH ENFORCEMENT AUTHORITY INTEROPERABILITY ETC PENETRATION CO-BRAND & LAUNCH COUNTRY WIDE CSC CARD A/W LEADING BANK WEIGH-IN MOTION

Benefits… ,[object Object],[object Object],[object Object],[object Object],[object Object]

… Benefits ,[object Object],[object Object],[object Object]

Challenges … ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

… Challenges… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

… Challenges… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

… Challenges: The Impact ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Operators should ideally be involved from the design stage, keeping in mind the long-life nature of structures: this permits to define along with the Operator acceptable solutions for design improvement: e.g. optimized structure w.r.t. maintenance activities. Example: A40 – France … O&M practices: maintenance Innovative “X” structure to save structural costs shall be contemplated in the light of O&M requirements

[object Object],[object Object],[object Object],[object Object],… O&M practices: maintenance Too late to maintain, too late to repair…

… O&M practices: maintenance Specialized software for structures enable decision makers to plan, specify, archive inspections of structures e.g. EGIS (Fr) software “LAGO”

… O&M practices: maintenance The software permits to plan inspections, to classify defaults & to assess the evolutions of defaults, then to prioritize actions through various scenarios. EGIS (Fr) software “LAGO”

… O&M practices: maintenance Unlike other O&M activities, maintenance of bridges requires a continuous expert analysis of defects: some have no impact, others may hide critical developments… Are we able to classify, “read” & prioritize defaults ?

… O&M practices: maintenance Item Issue at stake / maintenance task Expansion joints Variations of temperature can adversly affect the structure  Regular cleaning Bearings Smooth movements are necessary:  Regular measurement; replacement; Steel structure ,[object Object],[object Object],[object Object],[object Object],Dewatering of abutments ,[object Object],[object Object],[object Object]

… O&M practices: maintenance (cont.) O&M of bridges and structures requires specialized expertise & a long-term approach Item Issue at stake / maintenance task Pillars Concrete is not passive: cracks are normal  Evolution of cracks reveal the interior of concrete structures Etc.

… O&M practices: maintenance (cont.) Short span: no dilatation joint (bridge over Indian Railways) long span: dilatation joint (bridge over river – India)

… O&M practices: maintenance (cont.) ,[object Object],[object Object],[object Object],[object Object],Accumulated sand on bridge abutment & bearings

… O&M practices: maintenance (cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object]

… O&M practices: Toll Bridges do not often provide space for toll plazas. Freeflow is particularly fit for purpose Free flow toll project CANADA Golden Ears

… O&M practices: Toll (cont.) By nature, bridges give access to “the other side”, thus can be tolled in one direction only Lisbon (PT) One way tolling of all bridges

… O&M practices: Traffic Management ,[object Object],[object Object],[object Object],[object Object],[object Object]

… O&M practices: example ,[object Object],[object Object],[object Object],[object Object],A28 France

Bridges and Elevated Structures OPerations and Maintenanace Best Practices

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Bridges and Elevated Structures OPerations and Maintenanace Best Practices

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