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How to Create Roads in Hammer Source is 8-part series covering various beginner and advanced techniques on creating roads.

In our final Part 8 we focus on:

• Creating geometry to block off roads using brushes around curved sloped surfaces.

Full 8-Part Roads Series with Hammer Source:

1. Road Basics, Intersections and Adding Realism

2. 3 & 4 Way Intersections

3. Wide and Tight 90 Degree Turns

4. 180 Degree Turns

5. How to Create Curved, Sloped Roads

6. Brushes and Props - Blocking Roads Off

7. Terrain - Blocking Roads Off

8. Curved Sloped Roads - Blocking Roads Off

BLOCKING OFF CURVED ROADS WITH BRUSHES

Simple technique to block off roads using brushes is to create a curved brush using the arch tool that matches your road, and then use the Vertex Tool to reposition the vertices.

Select the Block Tool:

Under Objects, select from the drop down menu, arch

Create a brush template first. The template should be doubled the size of the road. If your road was created using 256 units as in previous tutorial, the surrounding brush should be set at 512.

The Arch Properties are as follows:

Wall Width: half the size of your road
Number of Sides: same as your road

Created outer arch.

Use the Vertex Tool to reposition the vertices and make the brush more geometrically friendly. Make sure it is aligned with the grid.

Here I raised the brush 8 units higher then the road, creating a curb:

INNER WIDE ROADS

For wider roads where you want to have a curb or geometry in inside of the wide road, the steps are very similar.

Create a template for the inner wide road gap:

Arch Properties: note that the original wide road was created at 512 units. To understand what is going on here make sure you've seen how to create wide 90 degree turns tutorial.

Here we created a wedge for wide 90 degree turn:

BLOCKING OFF CURVED SLOPED ROADS

Blocking off curved sloped roads is very similar to what we have covered above. The extra steps will require you to spend more time re-adjusting vertices to line up the geometry around your road.

Make sure you watched how to create curved sloped roads. You will better understand what is going on if you have watched all the tutorials before this.

Here we have a curved sloped road that we need to block off:

Inner Part: Create a template that will fill the gap:

Side view, make sure that the bottom and top of the template brush is large enough to match the top and bottom of the road:

Arch brush created:

Outer Part: Create a template that is doubled the size of the road. Our road in this example is 512 units, the template for outer curved brush to block will be 1024x1024

Arch Properties:

Here are both parts of inner and outer road geometry blocked off.

If you want to have both brushes to lower along with the road so they line up and curve down you will need to use the Vertex Tool and move each vertices of each brush so they line up along with the road:

Note that you do not need to triangulate the brush as we did with our road.

Here I re-textured the brushes and added few more around the road:

Full 8-Part Roads Series with Hammer Source:

1. Road Basics, Intersections and Adding Realism

2. 3 & 4 Way Intersections

3. Wide and Tight 90 Degree Turns

4. 180 Degree Turns

5. How to Create Curved, Sloped Roads

6. Brushes and Props - Blocking Roads Off

7. Terrain - Blocking Roads Off

8. Curved Sloped Roads - Blocking Roads Off

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