Iranian media reported that the "B1" bridge near the city of Azimiyeh in Karaj was struck in a US-Israeli airstrike.

Several people were injured in the attack, and rescue teams arrived at the scene. According to Iranian television, "the enemy targeted the B1 bridge in Karaj for the second time within hours while rescue teams were assisting those affected by the first attack."

Closer View of B1 Bridge After Airstrike (Iranian Media)

What is the B1 Bridge?

📌 The B1 Bridge is a massive engineering landmark located in the city of Karaj, Iran. It is considered one of the most prominent infrastructure projects in Iran and the Middle East, known for its large dimensions and advanced engineering design.

📌 Total length: approximately 1,050 meters.

📌 Height: varies according to sources, ranging between 132 and 156 meters, making it one of the tallest bridges in the region.

📌 Width: 38 meters, including three lanes for vehicles and a service lane in each direction.

📌 Design: consists of eight spans (pillars), with the longest span reaching 176 meters. The bridge was designed as part of the Martyr Soleimani Expressway, aimed at easing traffic congestion in northern Karaj.

📌 Location: the bridge is situated on the road leading to Chalus Avenue, a major mountain route connecting Tehran to the Caspian Sea. It crosses the Karaj River and forms a vital part of the highway linking Tehran with Karaj, making it a key transportation artery in the region.

📌 The bridge is described as "the longest bridge in the Middle East" and one of the most complex engineering structures in the area. It was designed and built by Iranian engineers and is considered a national pride and an example of local engineering capabilities. It officially opened earlier in 2026.

📌 The bridge was struck in air raids on April 2, 2026, causing injuries and damage to the surrounding infrastructure and raising regional security concerns.