The Brihattar Pub Barpeta Brahmaputra Garakhahaniya Pratirodh Sangram Samiti has threatened to block the Barpeta-Chenga- Daulashal road for 1,000 hours from January 5 and lock all government institutions in the East Barpeta area to protest the apathy of the government towards the grave problem of erosion in their area by the mighty Brahmaputra.