After nearly 15 years of anticipation, Madhya Pradesh's ambitious Bargi Diversion Project has achieved a significant engineering milestone with the successful breakthrough of the underground Sleemanabad Tunnel in Katni district. The tunnel boring machine (TBM) has cut through the final stretch of rock, completing the excavation and eliminating the project's biggest technical hurdle in carrying Narmada waters to the Son Basin.

The breakthrough marks a crucial step towards expanding irrigation facilities across thousands of hectares of farmland and improving water availability for farmers in several districts of the state.

CM expected to visit site

Officials have informed the state government about the successful completion of the tunnel excavation. According to sources, Madhya Pradesh Chief Minister (CM) Dr Mohan Yadav is likely to visit Sleemanabad in the coming days to inspect the project.

The successful breakthrough is being hailed as a landmark achievement for Madhya Pradesh's irrigation network and is expected to strengthen long-term water security and agricultural development across the region.

11.95-km underground tunnel linked

Stretching approximately 11.95 kilometres, the Sleemanabad Tunnel is one of the most challenging components of the Bargi Diversion Project. Excavation work had briefly been suspended during the final phase after engineers identified the risk of soil subsidence and potential structural damage to the tunnel.

Following detailed safety assessments, work resumed under stringent engineering protocols. On Wednesday, the TBM successfully completed the final section, linking both ends of the underground passage and achieving the much-awaited breakthrough.

Narmada Water to flow towards the Son basin

With excavation now complete, authorities will begin the process of extracting the tunnel boring machine through a vertical shaft. The project will then enter its finishing phase, which includes tunnel lining, electrical installations and other technical works.

Once these procedures are completed, water from the Narmada River will begin flowing towards the Son Basin, marking a transformative moment for irrigation infrastructure in the region.

1,450 villages across 6 districts to benefit

The project is expected to benefit nearly 1,450 villages spread across six districts, including Katni, Maihar, Satna and Rewa. It will provide irrigation facilities to around 1.85 lakh hectares of agricultural land, significantly reducing farmers' dependence on monsoon rainfall and enhancing agricultural productivity.

In Katni district alone, approximately 21,823 hectares of farmland are expected to receive irrigation benefits under the project.

Engineering feat completed despite multiple challenges

The Bargi Diversion Project received administrative approval in 2008, while construction of the tunnel commenced in 2011. Initially estimated at ₹799 crore, the project's cost rose to nearly ₹1,442 crore owing to complex geological conditions, disruptions during the Covid-19 pandemic and escalating construction costs.

Constructed at a depth of around 30 metres, the tunnel was excavated using a state-of-the-art German tunnel boring machine, making it one of the state's most technically demanding irrigation infrastructure projects.