B&TMS (Bridge and Tunnel Management System)

The managing/owning bodies of road infrastructures seek to pursue the best maintenance policies aimed at maintaining civil works within safety, functionality and usability standards.

The Company has developed “Bridge and Tunnel Management” software with the aim of providing a decision-making support system for the managing body which, starting from the information deriving from the monitoring/surveillance activities of the assets, allows the user to identify the best maintenance scenarios and optimize the interventions on the structures under examination.

The management systems, developed by the Company, have a dual function, namely as:

  • database
  • decision support tool


The database function is used to regularly record, on a single system, all inventory and inspection data of the works, in order to consult:

  • master data
  • historical data
  • traffic data
  • contractual documentation
  • design drawings
  • photographic documentation
  • inspection data (both recent and past)

The decision support tool function uses this data to provide predictions of future needs and prioritized intervention choices for different maintenance policy scenarios. Its aim is to:

  • formulate maintenance and improvement policies at the network level
  • suggest sets of interventions to be included in the annual projects, evaluating their cost/benefit ratio
  • predict deterioration over the life cycle of a single bridge and the entire network
  • predict the costs necessary to keep the network in service at the lowest cost, ensuring user safety
  • foresee the necessary costs for the functional improvement of the net
  • determine the optimal use of the available budget

Correlation between long-term maintenance costs of a given highway network and expected level of service. Through graphs of this type, resulting from the mathematical models of simulation, it is possible to identify the minimal cost of maintenance.

Example of the change in service status of a structural element of a viaduct over time based on proposed maintenance interventions.

Thanks to the experience acquired in the field of maintenance interventions, the models have been implemented with economic information, making explicit the estimate of the costs of maintenance interventions and relating it to the budgets that the managing body can annually allocate to maintenance, in order to achieve multiple objectives.

Goals Achieved:

  • definition of appropriate planning for routine and unplanned maintenance interventions with the realization of a multi-year maintenance plan
  • identification of the best maintenance practices and the timing of interventions as a function of the current and expected state of the assets with consequent optimization of the resources available for maintenance
  • achieving or maintaining a certain level of network service such as to ensure the best cost-benefit ratio in the application of the maintenance policy.