# 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)
Quick Tip: Variable Road Dimensions 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)
### 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)