On April 2, 2026, the B1 Bridge in Karaj, Iran, was struck during military operations, resulting in severe damage to this vital transport link between Karaj and Tehran. Iranian officials assert that the attack was aimed at crippling the country's infrastructure and destabilizing its social fabric. The bridge, which had not yet been officially inaugurated, was constructed predominantly with domestic materials and technology, showcasing Iran's engineering capabilities despite ongoing international sanctions. Following the strikes, Iranian authorities described the incident as a violation of international humanitarian law, emphasizing that the bridge was civilian infrastructure. The attack has also intensified discussions about Iran's technological independence and the integration of its diverse ethnic communities. In response to the destruction, public demonstrations erupted across several cities, symbolizing national unity against external threats. Reconstruction efforts began swiftly, with expectations to rebuild the bridge using local resources within six weeks. This incident has not only highlighted the strategic significance of the B1 Bridge but also the resilience of Iranian society in the face of adversity.