The paper gives an illustrative presentation of damage to the material of bridge structures
due to failure to maintain the system for drainage of bridges. Damage is caused by mechanical
erosion and abrasion or by chemical means, corrosion or a combination of the above. The cause of
the damage is related to the retention of salted water on the road and other surfaces of the bridge
structure, as well as wetting of the side and ceiling surfaces by flooding due to the non-functionality
of the water drainage system from the bridge. The possibility of taking measures to prevent such
phenomena and reduce them to a minimum is also considered
