Boston Bridges Face Stress Test During Historic Heat WaveBoston Bridges Face Stress Test During Historic Heat Wave As Boston swelters under a historic heat wave, the city’s vital infrastructure is facing a critical stress test. Bridges, particularly those made of steel, are particularly vulnerable to extreme temperatures. Heat Expansion and Structural Stress Steel expands when heated, which can cause significant stress on bridge components. This expansion can lead to cracks, deformation, and even catastrophic failure if proper precautions are not taken. Elevated Bridge Temperatures During the current heat wave, bridge temperatures have soared well above normal levels. Steel bridges absorb heat from the sun and can reach temperatures far exceeding the ambient air temperature. This extreme heat can accelerate expansion and exacerbate structural stress. Inspection and Monitoring To ensure bridge safety, engineers are conducting thorough inspections and monitoring systems to detect any signs of distress. Sensors are installed to measure temperature, strain, and other factors that indicate structural integrity. Emergency Closures In some cases, if the stress levels exceed safe limits, bridges may need to be closed for emergency repairs. The Longfellow Bridge, connecting Cambridge and Boston, was closed on Friday due to excessive heat expansion. Maintenance and Mitigation City officials are working to mitigate the effects of the heat wave on bridges. Measures include: * Applying reflective coatings to reduce heat absorption * Installing cooling systems such as fans or sprinklers * Providing additional inspections and monitoring * Restricting heavy vehicle traffic during peak heat hours Long-Term Implications The current heat wave is a stark reminder of the potential vulnerability of infrastructure to climate change. As average temperatures continue to rise, bridges and other critical infrastructure will face increasing stress. Engineers and policymakers must adapt design and maintenance strategies to ensure the safety and reliability of these essential structures.