The Tallah bridge, a busy link between the city and the northern fringes, is too weak to take the load of even buses and light goods vehicles, a meeting at Nabanna concluded on Thursday.
Officials said chief minister Mamata Banerjee would take the final decision on whether buses would be completely barred from the 57-year-old structure.
A meeting to discuss the matter, to be attended by the chief minister, has been scheduled for Friday morning.
An official who attended Thursday’s meeting said the decision was to allow only light vehicles on the bridge.
The meeting was attended by PWD minister Aroop Biswas, urban development minister Firhad Hakim, chief secretary Moloy De, representatives of various state government departments, and engineers and officials from the highway division of the engineering consultancy RITES.