A major bridge near Tehran was struck Thursday hours after President Donald Trump threatened to bomb the country “back to the Stone Ages.”
The B1 bridge in Alborz province, one of the tallest in the Middle East and a critical link between Tehran and the city of Karaj, was hit in two waves of attacks about an hour apart, Iranian state TV reported.
JUST IN: 🇮🇷 A bridge has collapsed after a strike in Karaj. pic.twitter.com/aLy8oJkOAc
— Donald J Trump Posts TruthSocial (@TruthTrumpPost) April 2, 2026
Open-source reports say the strikes on the B1 bridge appear to have involved 2,000-pound Joint Direct Attack Munitions (JDAM), a weapon widely used by the U.S. and Israel. This claim has not been independently verified.
Still image of an American GBU-31 JDAM (top left) hitting Iran’s B1 road bridge in Karaj earlier today. pic.twitter.com/fQafB5mGH2
— OSINTtechnical (@Osinttechnical) April 2, 2026
The governor of Karaj said that two rounds of bombardment on the B1 Bridge killed eight civilians and injured 95 others.
🚨 #Breaking
Governor of Karaj: As a result of two rounds of bombardment of the B1 Bridge by US, 8 civilians were killed and 95 others were injured.The victims were citizens who had been gathered beneath the bridge and along the riverbank to mark #Nature_Day in Iran. pic.twitter.com/19736vQc4G
— IRIB (Islamic Republic of Iran Broadcasting) (@iribnews_irib) April 2, 2026
Trump claimed responsibility for the strike, writing on Truth Social: “The biggest bridge in Iran comes tumbling down, never to be used again — much more to follow! It is time for Iran to make a deal before it is too late, and there is nothing left of what still could become a great country.”
Trump also reportedly said three bridges were struck overnight, though this could not be independently verified.
Trump on Iran:
Why wouldn’t they call? We just blew up their three big bridges last night.
Source: TIME
— Clash Report (@clashreport) April 2, 2026
The strikes on the B1 bridge mark the first time the U.S. military has attacked major civilian infrastructure in Iran.
While U.S. officials said the bridge opened in January, some Iranian reports said it was still not operational. U.S. defense officials told Axios that the bridge was targeted to prevent Iranian forces from moving weapons and missile parts across it.
Iran has warned it could target bridges in Israel and across the Middle East in retaliation to the strike on the bridge, described by Iranian media as an “engineering masterpiece.”
Among those it labeled “legitimate targets” was the Arik Bridge on Route 87 in northern Israel, which connects the Lower Galilee to the Golan Heights. Tehran also identified potential targets in Kuwait, Abu Dhabi, Jordan and Iraq.
