# Bridges
URL: https://docs.valsight.ai/bridges/
Description: A bridge breaks the difference between two values down into the individual effects that produced it, either across time periods or across scenarios.
A bridge breaks the difference between two values down into the individual effects that produced it, either across time periods or across scenarios. All bridges use the staircase shape the chart editor calls a **waterfall chart**.

## Start here if you want to:

| If you                                                                                           | Go to                                                                   |
| ------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------- |
| Explain why one scenario differs from another                                                    | [Scenario Bridges](/scenario-bridges/)                                  |
| Explain why one period differs from another                                                      | [Time Bridges](/time-bridges/)                                          |
| Understand how the effect of a single assumption is calculated, or show its description on hover | [Assumption Effects](/assumption-effects/)                              |
| Combine the line-items of one assumption into a single bar                                       | [Grouping Assumption Effects](/grouping-assumption-effects-in-bridges/) |
| Split the model's own contribution out of its single block                                       | [Data Effects Display in Bridge](/data-effects-display-in-bridge/)      |

## Related

* [Chart Types](/chart-types/): the other chart types and tiles you can place on a worksheet.
* [Formatting Charts](/chart-configuration/): sorting, scales and colors, which apply to bridges too.