diff --git a/vpc-transit-gateway-association-data/README.md b/vpc-transit-gateway-association-data/README.md
index ffde32d..1a3c765 100644
--- a/vpc-transit-gateway-association-data/README.md
+++ b/vpc-transit-gateway-association-data/README.md
@@ -70,6 +70,7 @@ No modules.
 | <a name="input_create"></a> [create](#input\_create) | Flag to indicate whether to create the resources or not (default: true) | `bool` | `true` | no |
 | <a name="input_network_account_profile"></a> [network\_account\_profile](#input\_network\_account\_profile) | AWS profile of the source account sharing the VPC resources | `string` | n/a | yes |
 | <a name="input_override_prefixes"></a> [override\_prefixes](#input\_override\_prefixes) | Override built-in prefixes by component. This should be used primarily for common infrastructure things | `map(string)` | `{}` | no |
+| <a name="input_private_route_table_ids"></a> [private\_route\_table\_ids](#input\_private\_route\_table\_ids) | Map of private route table IDs (which exclude the attachment subnets) | `map(string)` | `{}` | no |
 | <a name="input_private_subnets_ids"></a> [private\_subnets\_ids](#input\_private\_subnets\_ids) | List of private subnet objects including: subnet, label, availability\_zone, id | <pre>list(object({<br>    subnet            = string<br>    label             = string<br>    availability_zone = string<br>    id                = string<br>  }))</pre> | `[]` | no |
 | <a name="input_route_prefix_list_name"></a> [route\_prefix\_list\_name](#input\_route\_prefix\_list\_name) | Shared prefix list name used for routing to TGW.  It is comprised of all of the network CIDR blocks in AWS using TGW. | `string` | `"transit-gateway.prod"` | no |
 | <a name="input_route_table_label"></a> [route\_table\_label](#input\_route\_table\_label) | Route table lable for the attachment subnets | `string` | `"attachment"` | no |
diff --git a/vpc-transit-gateway-association-data/variables.tf b/vpc-transit-gateway-association-data/variables.tf
index d1c1568..fe85c1a 100644
--- a/vpc-transit-gateway-association-data/variables.tf
+++ b/vpc-transit-gateway-association-data/variables.tf
@@ -46,3 +46,8 @@ variable "transit_gateway_label" {
 ##   type        = list(string)
 ## }
 
+variable "private_route_table_ids" {
+  description = "Map of private route table IDs (which exclude the attachment subnets)"
+  type        = map(string)
+  default     = {}
+}
diff --git a/vpc-transit-gateway-association/README.md b/vpc-transit-gateway-association/README.md
index cdccdd6..a18e242 100644
--- a/vpc-transit-gateway-association/README.md
+++ b/vpc-transit-gateway-association/README.md
@@ -75,6 +75,7 @@ This sets up the necessary transit gateway configuration for attaching a VPC wit
 | <a name="input_data_input"></a> [data\_input](#input\_data\_input) | Map of data generated by vpc-transit-gateway-association-data | <pre>object({<br>    availablity_zone      = map(any)<br>    gateway_self          = string<br>    gateway_peer          = string<br>    route_tables_self     = map(any)<br>    route_tables_peer     = map(any)<br>    map_route_tables_self = map(any)<br>    map_route_tables_peer = map(any)<br>    prefix_list_id_ipv4   = string<br>  })</pre> | n/a | yes |
 | <a name="input_network_account_profile"></a> [network\_account\_profile](#input\_network\_account\_profile) | AWS profile of the source account sharing the VPC resources | `string` | n/a | yes |
 | <a name="input_override_prefixes"></a> [override\_prefixes](#input\_override\_prefixes) | Override built-in prefixes by component. This should be used primarily for common infrastructure things | `map(string)` | `{}` | no |
+| <a name="input_private_route_table_ids"></a> [private\_route\_table\_ids](#input\_private\_route\_table\_ids) | Map of private route table IDs (which exclude the attachment subnets) | `map(string)` | `{}` | no |
 | <a name="input_private_subnets_ids"></a> [private\_subnets\_ids](#input\_private\_subnets\_ids) | List of private subnet objects including: subnet, label, availability\_zone, id | <pre>list(object({<br>    subnet            = string<br>    label             = string<br>    availability_zone = string<br>    id                = string<br>  }))</pre> | `[]` | no |
 | <a name="input_route_prefix_list_name"></a> [route\_prefix\_list\_name](#input\_route\_prefix\_list\_name) | Shared prefix list name used for routing to TGW.  It is comprised of all of the network CIDR blocks in AWS using TGW. | `string` | `"transit-gateway.prod"` | no |
 | <a name="input_route_table_label"></a> [route\_table\_label](#input\_route\_table\_label) | Route table lable for the attachment subnets | `string` | `"attachment"` | no |
diff --git a/vpc-transit-gateway-association/routing.tf b/vpc-transit-gateway-association/routing.tf
index 5e17f76..83e73ef 100644
--- a/vpc-transit-gateway-association/routing.tf
+++ b/vpc-transit-gateway-association/routing.tf
@@ -45,7 +45,7 @@ resource "null_resource" "vpc_attachment_exists" {
 
 # pick the first prefix list found, either NAME or NAME.ipv4
 resource "aws_route" "gateway_ipv4" {
-  for_each = var.transit_gateway_routing_type == "self" ? module.routing_attachment_ipv4[0].private_route_table_ids : {}
+  for_each = var.transit_gateway_routing_type == "self" ? var.private_route_table_ids : {}
 
   route_table_id = each.value
   #  destination_cidr_block = "10.128.0.0/16"
diff --git a/vpc-transit-gateway-association/variables.tf b/vpc-transit-gateway-association/variables.tf
index d1c1568..fe85c1a 100644
--- a/vpc-transit-gateway-association/variables.tf
+++ b/vpc-transit-gateway-association/variables.tf
@@ -46,3 +46,8 @@ variable "transit_gateway_label" {
 ##   type        = list(string)
 ## }
 
+variable "private_route_table_ids" {
+  description = "Map of private route table IDs (which exclude the attachment subnets)"
+  type        = map(string)
+  default     = {}
+}