Labeling alignment intersection points in Civil 3D involves adding labels to mark where two alignments intersect. This is commonly done to identify key locations in road networks, utility corridors, or other design projects.

Here’s how you can label alignment intersection points step-by-step:

Steps to Label Alignment Intersection Points in Civil 3D
1. Open the Drawing
Open the drawing that contains the alignments you want to label.
Ensure the alignments are created and intersect at the desired locations.
2. Add an Alignment Intersection Label
Select the Intersection Tool:
Go to the Annotate Tab Labels & Tables Panel Add Labels.
Choose Label Type:
In the Add Labels dialog box:
For Feature: Select Alignments.
For Label Type: Select Intersection.
Configure Label Style:
Choose a label style from the dropdown menu (e.g., default styles or custom styles).
To customize a style:
Click the Pencil Icon next to the style to open the Label Style Composer.
Edit text, placement, or other properties.
Place the Label:
Click the intersection point where the alignments cross to place the label.
3. Verify or Customize the Intersection Label
Check the Label Content:
Labels can display station values, offset values, alignment names, or other custom data.
Edit the Label:
Select the label in the drawing.
Use the Properties Palette to adjust parameters, such as rotation or content.
4. Use Point of Intersection (PI) Labels
If the alignments are part of a geometric network (e.g., road centerlines), you can add labels at points of intersection (PIs) using alignment geometry labels.

Add Geometry Points Labels:
Go to Annotate Tab Add Labels Alignments Geometry Points.
Select the alignment and click OK.
Place the PI Labels:
Labels will appear at all geometry points, including intersections.
Customize as needed.
5. Automate Labeling Using Expressions (Optional)
If you want more control over intersection labeling (e.g., combining station values from both alignments), create an expression:

Open Settings Tab Alignment Label Styles.
Right-click Expressions New.
Define an expression to calculate or format label text for intersection points.
6. Verify the Label
Check Placement:
Ensure the label appears at the correct location and is readable.
Edit Alignment Properties:
If the intersection point moves due to design changes, labels will update dynamically.
Tips for Better Results
Use Layer Control:
Assign labels to layers for better visibility and management.
Check Style Consistency:
Standardize label styles across the project for clarity.
Use Snap Tools:
When placing labels manually, use snapping to ensure accurate placement.