The newly built bridge made of novel reactive powder concrete at Shepherd's Creek, Lake Macquarie, NSW is tested for static strain activity over a two-day period. We developed a fibre grating-based experimental strain sensing system and employed an active interrogation scheme using a tuneable laser source. Four FBG sensor heads are surface-mounted in the middle of a girder and under the bridge deck to monitor the strain and temperature movement. The strain sensors have a resolution of approximately 1.5. The observed strain fluctuations, which indicate the hogging and sagging behaviour of the bridge, are in agreement with the theoretical expectation.