Network-wide monitoring for roads, bridges, tunnels and rail

Transport networks combine many asset types along long corridors. This page covers monitoring across the network as a whole; dedicated pages go deeper into individual asset classes.

• Roads and highways: strain, pressure in road substructures, displacement and temperature.
• Slopes along highways: movement and deformation of soil or rock.
• Loads and traffic: vehicle loads on bridges and roadways, and traffic flow and volume.
• Network-scale movement: geospatial positioning and distributed fiber-optic sensing over long stretches.
• Environment and systems: air quality, moisture and wind, drainage flow, and lighting, ventilation and power systems.

For asset-specific monitoring, see Bridges, Tunnels & Metro and Rail.

• Strain gauges and distributed fiber-optic sensors: strain at points and over long stretches.
• Displacement sensors and pressure transducers: movement and pressure in supports and road substructures.
• Load cells and vehicle load sensors: load measurements from vehicles crossing bridges and roadways, providing data for review against applicable load criteria.
• Traffic monitoring sensors: traffic flow and volume.
• Vibration, seismic and acoustic emission sensors: dynamic response, ground movement and signals associated with cracking.
• Inclinometers and extensometers: movement of slopes and surrounding ground.
• GPS/GNSS and laser scanning: position and geometry of infrastructure.
• Environmental sensors, flow meters and energy monitoring: environmental conditions, drainage, and lighting, ventilation and power systems.