The technical reference identified the following characteristics of bridges in ASEAN Member States: (i) the peak of bridge construction was in the 1990s and there is a concern that the aging of bridges will become a more serious issue in the future; (ii) the majority of. The technical reference identified the following characteristics of bridges in ASEAN Member States: (i) the peak of bridge construction was in the 1990s and there is a concern that the aging of bridges will become a more serious issue in the future; (ii) the majority of. ucture, including railroads, ports, and airports. Japan combines structural cooperation with non-structural cooperation through technical cooperatiEAN) was established on 8 August 1967. The Member States are Brunei Darussalam, Cambodia, Indonesia, Lao PDR, Malaysia, Myanmar, Philipp nes, Singapore, Thailand and Viet Nam. The ASEAN Secr Southeast Asian Nat. 0101), notable. Expansion of economic activities in the ASEAN region yielded an increase in loads on bridges due to the increase of heavy goods vehicle traffic. The ASEAN Highway Network (AHN) project is a. velopment schemes are currently experiencing a worldwide political revival.