> For the complete documentation index, see [llms.txt](https://docs.openbrim.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.openbrim.org/templates/cadd/stationoffset-cadd.md).

# Station Offset

A **Station Offset** labels a point's location relative to an alignment as a Station + Offset pair: how far along the alignment the point sits, and how far perpendicular to it. This is the standard way to call out the location of bridge features in plan — pier centerlines, abutment back walls, bearing centerlines, expansion joints, drainage pickups, sign foundations.

Pick a point, and the label shows its `Station` (distance along the alignment from the alignment start) and `Offset` (perpendicular distance from centerline; positive = right of stationing, negative = left).

## Text

**Label:** Override text. Leave blank for the auto-computed `STA <station>, OFF <offset>` format.

**Precision:** Number of decimal places.

## Placement

**Offset X / Offset Y:** Leader offsets — fine-tune label position relative to the dimensioned point.

## Typography

**Text Height:** Text size in real units.

**Font Family / Font Weight / Font Style:** Font controls.

## Notes

Station Offset annotations are essential on plan-view bridge drawings — every bearing centerline, pier centerline, joint location, and drainage pickup typically gets one. The label updates automatically when the alignment is revised, when piers are repositioned, or when bearings are moved.

Station format follows highway conventions (e.g., `STA 12+34.50` for stations using the `+` separator), or the project's preferred format. The exact format depends on the alignment's stationing setup.

For features that share a station but sit at multiple offsets (e.g., a row of bearings on one pier line), call out the station once and use Linear Dimensions for the offset spacing — cleaner than a Station Offset on every bearing.


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