# Support Lines

This section defines the locations of abutments and piers along the bridge alignment.

{% hint style="info" %}
**Navigation:** Bridge Geometry > Support Lines

For detailed parameter explanations, see the [Support Lines Reference](https://docs.openbrim.org/templates/steel-tub-girder-bridge-workflow/bridge-geometry-stg/support-lines-stg).
{% endhint %}

## Steps

### Step 1: Navigate to Support Lines

Navigate to **Bridge Geometry > Support Lines** in the tree view.

![Support Lines navigation](https://openbrim.atlassian.net/wiki/download/attachments/2168684557/image-20230216-124550.png?api=v2)

### Step 2: Create First Support Line

Click the **three-dot icon** on the first **Bridge** cell and set it to **BRG1**.

### Step 3: Define All Support Lines

Create support lines at the following stations:

| Support Line | Station (ft) |
| ------------ | ------------ |
| Abut1        | 0            |
| Pier2        | 160          |
| Pier3        | 360          |
| Abut4        | 520          |

<details>

<summary><strong>Quick Tip:</strong> Transverse Offset Direction</summary>

Offset values use the PGL (Profile Grade Line) as the reference point.

![Offset reference](https://openbrim.atlassian.net/wiki/download/attachments/2168684557/image-20230216-130246.png?api=v2)

</details>

## Verification

{% hint style="success" %}
The completed support lines are shown below.
{% endhint %}

![Completed support lines](https://openbrim.atlassian.net/wiki/download/attachments/2168684557/image-20230216-143304.png?api=v2)