Visible damage is only part of the diagnosis. Cracks, rutting and settlement may come from surface wear, weak base layers, poor drainage or a combination of causes.
When local repair may work
Local repair is reasonable where the failure is limited and the surrounding structure remains stable.
- isolated potholes
- local wearing-course deterioration
- individual chamber or connection areas
- non-moving cracks
When reconstruction should be assessed
Repeated deformation, standing water or widespread failure indicates that resurfacing alone may not solve the cause.
- widespread rutting
- repeated settlement or frost damage
- incorrect falls or insufficient drainage
- changed traffic loading
Decision after inspection
BIMARKS separates essential work from options so repair and reconstruction can be compared by cost, risk and expected service life.