Northeast Frontier Railway (NFR) commissioned a new major bridge in the Chaparmukh – Senchoa section under Lumding Division (bridge number 7) on May 3, 2026. The bridge was constructed along with a permanent track diversion.
The new bridge consists of a configuration of Prestressed Concrete Slab and Open Web Girder representing a substantial engineering upgrade, which will replace the existing old bridge at the location.
The old bridge, originally a metre gauge structure later retained with strengthening, during the 1994 gauge conversion to broad gauge, had operational limitations and was subjected to a Permanent Speed Restriction (PSR) of 40 kmph.
Recognizing the technical demand for modernization and enhanced safety, the division undertook the rebuilding work along with the construction of a permanent diversion alignment to facilitate smoother and safer train movement in the section.
The new bridge and diverted track were successfully connected to the existing running line at both ends through a well-coordinated cut-and-connection operation executed under a traffic block of approximately six hours.
With the commissioning of this upgraded infrastructure, the earlier speed restriction of 40 kmph has been eliminated, resulting in improved operational efficiency, enhanced safety and smoother train operations in the section.
