Monitoring and Performance Evaluation: Case Study on the Bhutan Road Network Project-II

Improvements and innovation in design of linear infrastructure such as roads and bridges are observed to be beneficial to wildlife crossings. This is among the findings of a 2-phased monitoring study in Bhutan particularly in a 183-kilometer highway and feeder road constructed under RNP II with the technical and financial assistance of ADB. Seven underpasses were constructed at NH2 and one at NH5. Through monitoring with the help of cameras installed in these underpasses, the number of wildlife species recorded has doubled in the ongoing monitoring study compared to the pilot study (from 7 to 15 species) while successful crossing by the Asian elephant has increased by 13%. While more studies need to be undertaken to look into other factors further, it is observed that good design is not only effective in promoting connectivity but costs less and is highly appropriate for remote places.