These figures exclude roads managed by The Department of Conservation, Highway and Network Operations and Waitangi Trust.
Single lane bridges: bridges where there is only a single lane.
Speed restriction bridges: bridges where there is a speed restriction (but no weight restriction).
Timber bridges: bridges made out of timber.
Weight restriction bridges: bridges that have a weight restriction. Some of these bridges may also have a speed restriction.
This data is about bridges that can be used by motor vehicles. Pedestrian bridges are excluded.