About
Naranarayan Setu connects Bongaigaon to Goalpara across the Brahmaputra in lower Assam, opened in 1998 as the third bridge across the Brahmaputra (after Saraighat 1962 and Kalia Bhomora 1987). Named after Koch dynasty kings Nara Narayan and Chilarai, the bridge is a critical link for both road and rail traffic to the Bodoland Territorial Region and onward to Meghalaya.
The lower deck carries a single broad-gauge railway track; the upper deck carries two lanes of road traffic forming part of NH-17. IRCON executed the construction at ~₹120 crore. The bridge's combined rail-road configuration was chosen to reduce land acquisition and save on duplicated foundation costs in the wide Brahmaputra channel.
The approach embankments are 5 km long on each side — making the total infrastructure ~12 km across the floodplain. The bridge was hailed at opening as a symbol of integration for India's northeast, then still recovering from years of insurgency.
Cross-references
17Indian Standards, IRC codes, and InfraLens knowledge articles that bear on this project's design and execution. Each link opens the relevant reference page.
Related calculators
6InfraLens calculators most relevant for bridge projects.
Notable features
- Third bridge across the Brahmaputra (after Saraighat 1962 and Kalia Bhomora 1987)
- Combined rail-cum-road double-deck
- Approach embankments 5 km on each side across the floodplain
- Named after Koch dynasty kings Nara Narayan and Chilarai
- Critical link to Bodoland Territorial Region + Meghalaya