> 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/examples/concrete-bridge-examples/example-prestressed-i-girder-concrete-bridge-ex1-pig/superstructure-attachments-ex1-pig/roadway-ex1-pig.md).

# Roadway

This section defines the roadway dimensions used in computing influence coefficients for live loads.

{% hint style="info" %}
**Navigation:** Superstructure Attachments > Roadway

For detailed parameter explanations, see the [Roadway Reference](https://docs.openbrim.org/templates/precast-i-girder-bridge-workflow/superstructure-attachments-pig/roadway-pig).
{% endhint %}

## Steps

### Step 1: Navigate to Roadway

Navigate to **Superstructure Attachments > Roadway** in the tree view.

![Navigation](https://openbrim.atlassian.net/wiki/download/attachments/2235957271/image-20230714-124019.png?api=v2)

### Step 2: Set Bridge Reference

Click the **three-dots icon** on the **Bridge** cell and select **Bridge1**.

### Step 3: Define Roadway Dimensions

Click the **three-dots icon** on **Roadway Dimensions** and select **Edit**.

![Edit Dimensions](https://openbrim.atlassian.net/wiki/download/attachments/2235957271/image-20230714-124432.png?api=v2)

Enter the roadway dimension data as shown.

![Dimension Data](https://openbrim.atlassian.net/wiki/download/attachments/2235957271/image-20230804-072352.png?api=v2)

<details>

<summary><strong>Quick Tip:</strong> Variable Road Dimensions</summary>

Road dimensions may vary depending on the station.

![Variable Dimensions 1](https://openbrim.atlassian.net/wiki/download/attachments/2235957271/image-20230221-133420.png?api=v2)

![Variable Dimensions 2](https://openbrim.atlassian.net/wiki/download/attachments/2235957271/image-20230221-133509.png?api=v2)

</details>

### Step 4: Adjust Lane Parameters (Optional)

Navigate to the **Roadway** tab to adjust lane dimensions and asphalt thickness if needed.

![Roadway Tab](https://openbrim.atlassian.net/wiki/download/attachments/2235957271/image-20230714-125241.png?api=v2)

## Verification

{% hint style="success" %}
After completing these steps, your roadway configuration should match the view shown below.
{% endhint %}

![Completed Roadway](https://openbrim.atlassian.net/wiki/download/attachments/2235957271/image-20230714-125547.png?api=v2)


---

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