To create a 3D bridge representation in an existing SMS project, use the following steps:
| 1. Create an 3D bridge map coverage.
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- Create a new coverage with the "3D Bridge" type.
| 1. Create new coverage from scratch.
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- Select Map Data in the Project Explorer and use the New Coverage right-click command.
- Use the New Coverage dialog to create a new coverage by selecting the desired coverage type, and naming the coverage.
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| 2. Create new coverage from an existing coverage.
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- Use the Duplicate command on an existing coverage. This will copy any feature objects on the coverage.
- Use the Rename command to give the coverage a new name.
- Change the coverage type.
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| 2. Create arcs representing the upstream and downstream side of the bridge location.
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- Select the Create Feature Arc
 tool and create an arc representing the side of the bridge in the Graphics Window.
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| 3. Define the bridge profile.
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- Right-click on the 3D bridge coverage and select Edit Bridge.
- In the Bridge dialog, define the top profile, upstream profile, and downstream profile.
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| 4. Export the bridge profile.
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- In the Bridge dialog, select the Export 3D Bridge button.
- Use the Save dialog to save out a XmUGrid file for the bridge.
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| 5. Import the bridge profile.
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- Load a XmUGrid file from local computer files using the File | Open... command.
- Alternatively, drag and drop the file into the Graphics Window in SMS.
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