how did they reopen the highway?

The Prithvi Highway was reopened for two-way traffic after repairs, particularly at the Golaudi section, although some risks still remain. Prior to that, one-way traffic had started as clearing work was underway. Similarly, the BP Highway reopened with one-way traffic after flood damage was repaired, and a Bailey bridge was used to reopen the road connecting Rasuwa and Nuwakot. These reopenings involved repair work and temporary traffic management measures like one-way traffic to restore connectivity.