As many as 449 infrastructure projects, each worth Rs 150 crore or more, have been hit by cost overruns totalling more than Rs 4.29 lakh crore, according to a report.

The Ministry of Statistics and Programme Implementation monitors infrastructure projects worth Rs 150 crore and above.

Of the 1,736 such projects, 449 reported cost overruns and 547 were delayed.

"Total original cost of implementation of the 1,736 projects was Rs 22,32,019.72 crore and their anticipated completion cost is likely to be Rs 26,61,205.74 crore," the ministry's latest report for February 2021 said.

According to the report, the cost overrun for completing these 449 projects works out to be Rs 4,29,186.02 crore.

The expenditure incurred on these projects till February 2021 is Rs 12,78,270.71 crore, which is 48.03 percent of the anticipated cost of the projects.

However, the report said the number of delayed projects decreases to 409 if delay is calculated on the basis of latest schedule of completion.

Further, for 930 projects neither the year of commissioning nor the tentative gestation period has been reported.

Out of 547 delayed projects, 109 projects have overall delay in the range of 1-12 months, 132 projects have delay of 13-24 months, 187 projects reflect delay in the range of 25-60 months and 119 projects show delays of 61 months and above.

The average time overrun in these 547 delayed projects is 44.59 months.

Reasons for time overruns as reported by various project implementing agencies include delay in land acquisition, delay in obtaining forest and environment clearances, and lack of infrastructure support and linkages.

Delay in tie-up for project financing, delay in finalisation of detailed engineering, change in scope, delay in tendering, ordering and equipment supply, and law and order problems, among others, are the other reasons, the report said.

The report also cited 'state-wise lockdown due to COVID-19' as a reason for the delay in implementation of these projects.

It has also been observed that project agencies are not reporting revised cost estimates and commissioning schedules for many projects, which suggests that time/cost overrun figures are underreported, it added.