Primary impacts on wildlife associated with bridge/road construction and operation include reduction/alternation in habitat, effects on wildlife movement, and indirect effect on mortality and interference in nesting, breeding, migrating, and overwintering activities. Potential impacts to wildlife include the following:
Habitat. Reduction in habitat effectiveness along the river due to increased noise from bridge crossing and reduction in wildlife habitat directly through site clearing or indirectly through sensory disturbance and barriers to movement
Movement. Sensory disturbance from road traffic along bridges may obstruct daily or seasonal wildlife movement.
Abundance/biodiversity. Interference in nesting activity, disturbance to wildlife during construction, and increased mortality risks from changes in vehicular access and increased vehicle use.
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