The Highways Department signed the contract through TIML MOM Limited. The duties cover: •Calibrate the existing set of vibration test equipment from the client; •Carry out a preliminary test on the three bridges to ensure the proposed methodology is applicable; •Measure the ambient vibration of 5% of the cables on the three bridges. •Identify the natural frequencies of all measured cables; •Determine the tension forces on all measured cables based on the identified natural frequencies.