diff --git a/routing/outputs.tf b/routing/outputs.tf
index 0ea51b8..c49a148 100644
--- a/routing/outputs.tf
+++ b/routing/outputs.tf
@@ -40,12 +40,12 @@
 
 output "public_route_table_ids" {
   description = "Public route table IDs map by availability zone"
-  value       = { for k in local.availability_zones : k => aws_route_table.public[k].id }
+  value       = var.create_public_route_table ? { for k in local.availability_zones : k => aws_route_table.public[k].id } : {}
 }
 
 output "private_route_table_ids" {
   description = "Private route table IDs map by availability zone"
-  value       = { for k in local.availability_zones : k => aws_route_table.private[k].id }
+  value       = var.create_private_route_table ? { for k in local.availability_zones : k => aws_route_table.private[k].id } : {}
 }
 
 output "vpc_endpoint_s3_id" {