For something simple you could use a Atlas rerail section- paint it color of your road and your done. Quick and easy. For a wood type use small strips of wood and glue between the rails, use a couple of strips on the two outside rails where the road crosses the track. And you can use plaster, sculpamold, drywall compound or your choise of material. Fill between the rails and before and after rails, you need to run some type of wheel set on the rails before the filler material sets up. This will provide a grove in the filler material for the train wheels to clear. Clean rails and paint and your on your way.
For something simple you could use a Atlas rerail section- paint it color of your road and your done. Quick and easy. For a wood type use small strips of wood and glue between the rails, use a couple of strips on the two outside rails where the road crosses the track. And you can use plaster, sculpamold, drywall compound or your choise of material. Fill between the rails and before and after rails, you need to run some type of wheel set on the rails before the filler material sets up. This will provide a grove in the filler material for the train wheels to clear. Clean rails and paint and your on your way.