I just checked my written source for those dimensions but I have not gone to a primary source to confirm.
Here are a few images of the CFB Petawawa Bailey Bridge. It was my Father who was behind saving the bridge back in the 1970s and the bay of bridging has been on outdoor display ever since. It is currently situated at 2 CER's Brennan Lake site. The pontoons have lost much of their originality as they have been rebuilt at least two times due to the deterioration from being outside for several decades. The pontoons were last reconstructed in 2018.
1 FD ENGR SQN - An Engineer Monument - MWO Ralph Storey - Petawawa Post copy.jpg
C13-2 W.jpg IMG_0388 copy.jpg IMG_1249 Bailey Bridge [1] copy.jpg