The ambush occurred at about 16:00 on 14 January, when Japanese troops from the 5th Division approached, mounted on bicycles, and crossed the bridge unharassed. Then came the main column, several hundred strong, also cycling, which was followed by tanks and engineer trucks. At this point, the bridge was detonated, sending timber, bicycles and bodies hurtling through the air. B Company, 2/30th Australian Battalion spread out along either side of the road, concealed in well-protected firing positions, then opened fire and the Japanese column took devastating blows as row upon row of men and equipment were mowed down by machine gun and rifle fire. Most of the Japanese troops tied their rifles to the handlebars of their bicycles making the ambush even more successful for the Australians.