For a selected bridge or selected bridge components, open the Quantities panel to review the concrete and steel materials required to construct them.
- Select an individual component or component group to view quantities for your selection in the Selected field. For example, in the image below, the bridge deck is selected.
![Quantities for Selection](../../images/ill_bridge_quantities_selected.png)
Note: [Changing the type of an existing bridge](To-change-bridge-type.html) will cause InfraWorks to recalculate material quantities.