This arrangement suffers from the drawback that changing of bearings during future maintenance operation is more difficult. In fact, diaphragms also contribute to the provision of torsional restraint to the bridge deck.
Vincent T. H. CHU
Hurry Up !!! - Just join the 10k+ fans of ours on Facebook and get real updates Iamcivilengineer
Are diaphragms necessary in the design of concrete box girder bridges?