On May 2013, I along with my colleague from college (SchEMS)  visited the B.P Highway for the impact analysis of the B.P highway as our field visit of the course Titled Environmental Impact Assessment (EIA). Our objective of the visit was 

• Environmental Impact Assessment
• Observation of implementation of EIA conducted in the road project
• To observe Bio-engineering technique applied.

The B.P. Koirala Highway, also known as the Banepa Bardibas Highway, is a highway in eastern Nepal. It links Kathmandu Valley with the Eastern region. It is named after the former leader of Nepali Congress, Mr. Bisheswor Prasad Koirala.It is the only major eastbound exit from highly populated and quake-prone Kathmandu Valley it is critical to be completed for emergency evacuation and relief purposes. Currently, Kathmandu relies solely upon one congested westward "highway" for its road links to the south,The capital region has no rail or navigable river links. Despite this, the highway criss-crosses through mountain regions with hairpin turns of widths of one bus wide in numerous areas.

The entire highway from Kathmandu to Bardibas via Dhulikhel had a project completion date of 2011, for a total of 158 km. It now is projected to be finished in 2014. The reasons for the delay include Japanese contractors lack of security for explosives, thus the road was created with manual labor, which later there was an admission that this was a mistake. This alternate route will reduce the journey from Kathmandu to Bardibas and other cities east of Bardibas by at least 200 km.

The highway has existed in stages for decades, with large unimproved portions. The 37 km section of the lowlands between Bardibas and Sindhuli has been in operation for many years, the 50 km section between Banepa and Nepalthok of Bagmati region was completed in 2005 with Japanese grant money. However, a major part linking the two improved regions was only completed in February 2009, funded with Japanese loans and contractors.