Between two point codes, there will be a linkset maintained by MTP3. Link set involves multiple links ( max 16).
It is expected that the link resource consumption should not cross-40% because in case of other link failure, one link needs to handle the left-over load, like that if there are 8-links which are down, the left 8 links will have resource-comsumption of 80%, even in this scenario the connectivity will be stable with out major issues ( like conjuction etc).
Hope this helps………..
Hari