321TYPE, 60M, DDR This is our project in the Kingdom of Bhutan.Bridge construction: #321, DDRBridge Length: 60mWidth:3.8mLoading ... bridge is similarly like compact 100,compact 200 International bridge.it is assembled by each 3m panel, and invented by ... according to their span length and transportation requirement. So, it has been widely applied as emergency transportation, temprary or permanent ...