Published : 14 Mar 2017, 01:56 AM
They say only following the Building Construction Rules correctly in such projects can ensure the safety of the workers and passersby to some extent.
A passerby was killed and two employees of the firm, which is building the flyover at Malibagh, were injured when the girder fell from a crane while being lifted around 2am on Monday.
On Nov 24 in 2012, three girders of an under-construction flyover at Chittagong's Bahaddarhat collapsed, killing 13 and injuring scores.
Professor Jamilur Reza Choudhury thinks the number of such accidents can be reduced if the contractors are forced to strengthen safety measures.

"But these are not followed in most cases in our country. The contractors don't follow them in most of the projects because they are not forced to do so," he said.
The former BUET teacher says it is the duty of the agencies implementing the projects to compel the contractors to follow the rules.
Toma Constructions is building the Mouchak-Malibagh flyover under the Local Government and Engineering Department (LGED).
In Chittagong's Bahaddarhat, Parisha Enterprise and Mir Akter Enterprise were building the flyover under the Chittagong Development Authority (CDA).
Delwar Majumder, former chairman of Engineers Institute of Bangladesh (EIB), Chittagong, alleged the Bahaddarhat accident occurred due to not following the rules.
"There was supposed to be no work on a holiday, and not even in the night. But the girders were being lifted on holiday and in the night," he said.
Delwatr also blamed the negligence of the supervisory agencies for such accidents. "They are not doing their duties properly. They try to evade (responsibility) after accidents," he said.

He thinks it is necessary to keep safety records and review those regularly at the big projects.
"The loose ends can be tied up once those are found. Decisions to improve safety measures can be taken through review. But this process is not followed anywhere in our country," he added.
Delwar thinks there were faults in the safety measures taken at Malibagh.
"I visited the area several times. I saw that the safety precautions were not being followed correctly. There was no cautionary sign under the flyover when the work was under way over it. Moreover, I did not see any worker wearing safety shoe, helmet or belt up there," he said.
Contractor denies
Toma Construction Managing Director Ataur Rahman Bhuiya Manik has claimed the safety condition of Mouchak-Moghbazar flyover project area is 'good'.
"The girders are lifted after midnight by closing the street to avoid the risk. The work was under way on Sunday night in that way, but no one saw how the man came under the girder," he told bdnews24.com.

"It's a critical job. Engineers from our firm and LGED were there. All safety measures were taken. But the accident occurred," he said.
"We lifted 1200-1400 girders safely. No one knows when and how the accidents occur. That girder was already lifted and fixed. It was not supposed to fall. We don't understand why it fell," he added.
Neither project director Nazmul Alam, nor LGED Chief Engineer Shyama Prasad Adhikari received bdnews24.com phone calls for comments.