The bridge in Chirajara was to be part of a highway connecting Bogotá with the city of Villavicencio.
Images from the scene show a large part of the 450m-long bridge lying in the ravine below.
Colombia’s Transport Minister Germán Cardona spoke of a “tragedy” and said the cause of the collapse would be investigated.
One of the workers injured in the collapse described the moment it happened.
Luis Alvarado told El Tiempo newspaper: “Everyone started shouting that the bridge was falling, I didn’t have time to do anything and then I felt a blow to my head.”
Construction officials said that fortunately not many workers were on the bridge at the time of the collapse as staff were receiving a safety briefing.
The bridge is part of an ambitious program to improve the route leading from the capital to the eastern plains by turning parts of it into a dual carriageway.
The planned works include the construction of 18 new tunnels and 42 bridges and viaducts as well as new lighting and CCTV cameras.
The existing – winding and narrow – road faces frequent closures with trucks supplying the capital with produce often breaking down, blocking traffic.
The company tasked with the works is Coviandes, which is majority-owned by a Colombian investment corporation.
On January 15, Coviandes issued a statement saying it would do everything it could to help the families of the workers who died or were injured in the collapse.
The US House Ethics Committee has voted to release its report on former Republican Representative…
ABC News has agreed to pay $15 million to President-elect Donald Trump to settle a…
South Korea’s parliament has voted to impeach President Yoon Suk Yeol over his failed attempt…
Israeli war planes have carried out more than 100 air strikes in Syria on December…
President-elect Donald Trump has threatened to impose 100% tariffs on the BRICS countries if they…
Syrian troops have withdrawn from the city of Aleppo following an offensive by rebels opposed…