routetable-deploy.json

{
    "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "RouteTableName": {
            "type": "string",
            "metadata": {
                "description": "Route Table Name"
            }
        },
        "Route1Name": {
            "type": "string",
            "metadata": {
                "description": "Route 1 Name"
            }
        }
    },
    "functions": [],
    "variables": {},
    "resources": [
        {
            "name": "[parameters('RouteTableName')]",
            "type": "Microsoft.Network/routeTables",
            "apiVersion": "2019-11-01",
            "location": "[resourceGroup().location]",
            "tags": {
            },
            "properties": {
                "routes": [
                    {
                        "name": "[parameters('Route1Name')]",
                        "properties": {
                            "addressPrefix": "destinationCIDR",
                            "nextHopType": "VirtualNetworkGateway",
                            "nextHopIpAddress": "0.0.0.0"
                        }
                    }
                ],
                "disableBgpRoutePropagation": true
            }
        }
    ],
    "outputs": {}
}