Government Mandates Bridge Sensor Installations

Ensuring the safety of bridges is paramount in averting traffic disruptions and potential accidents. Recognizing this, on March 4, 2024, the Ministry of Road Transport and Highways (MoRTH) issued directives to agencies overseeing national highway development, mandating the installation of sensors on bridges. These sensors aid in identifying corrosion and facilitating real-time monitoring of bridge conditions.


Bridge inspections are conducted in two phases: an initial visual survey followed by a comprehensive instrument-assisted investigation. However, critical bridges require monitoring of specific parameters like strain, deflection, and corrosion using appropriate sensors. Data collected is analyzed using software tools for accurate assessment.


Continuous data collection ensures real-time monitoring, particularly for bridges in harsh environments. Sensors can be installed during construction or later. MoRTH emphasizes real-time monitoring by installing sensors permanently or temporarily across bridges.

In light of the above considerations, it has been determined to implement real-time health monitoring for various categories of bridges on National Highways using suitable sensors. Consultants tasked with preparing Detailed Project Reports (DPRs) for proposed bridges are required to finalize the specific types, quantities, and locations of sensors, and incorporate this information into the cost estimates and scope of work.


The specific type, quantity, and locations of sensors for existing bridges will be determined and approved by the Assistant Director General (ADG) in the Roads Wing of the MoRTH, or the respective Member in NHAI, or the Director (Technical) in NHIDCL, as applicable. The bid documents will include provisions for these sensors and their monitoring. The methodology for the installation or embedding of sensors will be carried out by the contractor in accordance with the manufacturer’s guidelines, subject to approval from the relevant Regional Office (RO) of MoRTH, NHAI, or NHIDCL.


All executing agencies of MoRTH must furnish comprehensive details regarding bridges, types of installed sensors, particulars of the Data Acquisition System, software tools utilized for performance analysis, and the outcomes of such analysis to the S&R Zone of the Ministry periodically.