diff --git a/lib/screens/alerts/informed_entity.ex b/lib/screens/alerts/informed_entity.ex
index d5916e2fe..848e75fa5 100644
--- a/lib/screens/alerts/informed_entity.ex
+++ b/lib/screens/alerts/informed_entity.ex
@@ -76,4 +76,16 @@ defmodule Screens.Alerts.InformedEntity do
     end)
     |> Enum.filter(fn ie -> not is_nil(ie.stop) end)
   end
+
+  @spec boarding_platforms_from_entities([t()]) :: [Stop.t()]
+  def boarding_platforms_from_entities(informed_parent_stations) do
+    informed_parent_stations
+    |> Enum.flat_map(
+      &case &1.stop.child_stops do
+        nil -> []
+        child_stops -> child_stops
+      end
+    )
+    |> Stop.filter_subway_platforms()
+  end
 end
diff --git a/lib/screens/v2/candidate_generator/widgets/reconstructed_alert.ex b/lib/screens/v2/candidate_generator/widgets/reconstructed_alert.ex
index b845a7ac2..3cd5b9aae 100644
--- a/lib/screens/v2/candidate_generator/widgets/reconstructed_alert.ex
+++ b/lib/screens/v2/candidate_generator/widgets/reconstructed_alert.ex
@@ -163,10 +163,11 @@ defmodule Screens.V2.CandidateGenerator.Widgets.ReconstructedAlert do
     # Given informed entities representing an alert at a single station,
     # finds the corresponding platform names for those child stops included.
     with [informed_parent_station] <- Alert.informed_parent_stations(alert),
-         [_ | _] = child_platforms <- informed_parent_station.stop.child_stops,
+         [_ | _] = child_platforms <-
+           InformedEntity.boarding_platforms_from_entities([informed_parent_station]),
          :partial_closure <- Alert.station_closure_type(alert, child_platforms) do
       platform_ids =
-        child_platforms |> Stop.filter_subway_platforms() |> Enum.map(& &1.id) |> MapSet.new()
+        child_platforms |> Enum.map(& &1.id) |> MapSet.new()
 
       informed_entities
       |> Enum.filter(&(&1.stop.id in platform_ids))
diff --git a/lib/screens/v2/widget_instance/subway_status/serialize.ex b/lib/screens/v2/widget_instance/subway_status/serialize.ex
index e84a604f0..613db14d6 100644
--- a/lib/screens/v2/widget_instance/subway_status/serialize.ex
+++ b/lib/screens/v2/widget_instance/subway_status/serialize.ex
@@ -4,8 +4,8 @@ defmodule Screens.V2.WidgetInstance.SubwayStatus.Serialize do
   """
 
   alias Screens.Alerts.Alert
+  alias Screens.Alerts.InformedEntity
   alias Screens.Routes.Route
-  alias Screens.Stops.Stop
   alias Screens.V2.WidgetInstance.SubwayStatus
   alias Screens.V2.WidgetInstance.SubwayStatus.Serialize.GreenLine
   alias Screens.V2.WidgetInstance.SubwayStatus.Serialize.RedLine
@@ -251,13 +251,7 @@ defmodule Screens.V2.WidgetInstance.SubwayStatus.Serialize do
     child_platforms_at_informed_stations =
       alert
       |> Alert.informed_parent_stations()
-      |> Enum.flat_map(
-        &case &1.stop.child_stops do
-          nil -> []
-          child_stops -> child_stops
-        end
-      )
-      |> Stop.filter_subway_platforms()
+      |> InformedEntity.boarding_platforms_from_entities()
 
     case Alert.station_closure_type(alert, child_platforms_at_informed_stations) do
       # Logic for partial_station_closure will remove any alerts that apply to more than