diff --git a/apps/webapp/app/presenters/v3/RunQueueMetricsPresenter.server.ts b/apps/webapp/app/presenters/v3/RunQueueMetricsPresenter.server.ts
index 0defa6178ab..c5096145ad2 100644
--- a/apps/webapp/app/presenters/v3/RunQueueMetricsPresenter.server.ts
+++ b/apps/webapp/app/presenters/v3/RunQueueMetricsPresenter.server.ts
@@ -41,6 +41,7 @@ const DELAY_GRID_MS = 5 * 60 * 1000;
  * waiting to start, live counts and recent delay percentiles. Null when flag off.
  */
 export async function resolveRunQueueMetrics(options: {
+  request: Request;
   userId: string;
   organizationSlug: string;
   projectParam: string;
@@ -52,10 +53,10 @@ export async function resolveRunQueueMetrics(options: {
     queue: { name: string; concurrencyKey?: string | null };
   };
 }): Promise<RunQueueMetrics | null> {
-  const { userId, organizationSlug, projectParam, envParam, run } = options;
+  const { request, userId, organizationSlug, projectParam, envParam, run } = options;
 
   try {
-    if (!(await canAccessQueueMetricsUi({ userId, organizationSlug }))) {
+    if (!(await canAccessQueueMetricsUi({ request, userId, organizationSlug }))) {
       return null;
     }
 
diff --git a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.dashboards.$dashboardKey/route.tsx b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.dashboards.$dashboardKey/route.tsx
index 31f14f8b70d..6e2fe10d32e 100644
--- a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.dashboards.$dashboardKey/route.tsx
+++ b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.dashboards.$dashboardKey/route.tsx
@@ -63,7 +63,7 @@ export const loader = async ({ request, params }: LoaderFunctionArgs) => {
   // URL), so gate it per-org like the rest of the Queue Metrics view.
   if (
     dashboardKey === "queues" &&
-    !(await canAccessQueueMetricsUi({ userId: user.id, organizationSlug }))
+    !(await canAccessQueueMetricsUi({ request, userId: user.id, organizationSlug }))
   ) {
     throw new Response(undefined, { status: 404, statusText: "Not found" });
   }
diff --git a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.queues/route.tsx b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.queues/route.tsx
index 597901527a1..b94262081e5 100644
--- a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.queues/route.tsx
+++ b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.queues/route.tsx
@@ -170,7 +170,11 @@ export const loader = async ({ request, params }: LoaderFunctionArgs) => {
 
   // Per-org gate for the metrics UI. When off, this org gets the classic Queues page and
   // no metrics query fires.
-  const queueMetricsUiEnabled = await canAccessQueueMetricsUi({ userId, organizationSlug });
+  const queueMetricsUiEnabled = await canAccessQueueMetricsUi({
+    request,
+    userId,
+    organizationSlug,
+  });
 
   const maxPeriodDays = queueMetricsUiEnabled
     ? await queueMetricsMaxPeriodDays(environment.organizationId)
diff --git a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.queues_.$queueParam/route.tsx b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.queues_.$queueParam/route.tsx
index c0c0f5016c6..59ced90c42e 100644
--- a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.queues_.$queueParam/route.tsx
+++ b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.queues_.$queueParam/route.tsx
@@ -106,7 +106,7 @@ export const loader = async ({ request, params }: LoaderFunctionArgs) => {
 
   // This whole page is part of the metrics UI; gate it per-org (the list already hides
   // the only link to it, this is defense in depth).
-  if (!(await canAccessQueueMetricsUi({ userId, organizationSlug }))) {
+  if (!(await canAccessQueueMetricsUi({ request, userId, organizationSlug }))) {
     throw new Response(undefined, { status: 404, statusText: "Not found" });
   }
 
diff --git a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.tasks.scheduled.$taskParam/route.tsx b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.tasks.scheduled.$taskParam/route.tsx
index 590556e087b..e286a0c056f 100644
--- a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.tasks.scheduled.$taskParam/route.tsx
+++ b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.tasks.scheduled.$taskParam/route.tsx
@@ -159,7 +159,7 @@ export const loader = async ({ request, params }: LoaderFunctionArgs) => {
   // Live queue counts for the sidebar Queue property (flag on only; the property itself
   // is not rendered without them, so flag off = no extra reads and no UI change).
   let queueMetrics: { live: QueueLiveCounts; ids: QueueMetricIds } | null = null;
-  if (task.queue && (await canAccessQueueMetricsUi({ userId, organizationSlug }))) {
+  if (task.queue && (await canAccessQueueMetricsUi({ request, userId, organizationSlug }))) {
     const queueName = task.queue.name;
     const [lengths, concurrency] = await Promise.all([
       engine.lengthOfQueues(environment, [queueName]),
diff --git a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.tasks.standard.$taskParam/route.tsx b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.tasks.standard.$taskParam/route.tsx
index db829fc74b6..32a16c6896d 100644
--- a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.tasks.standard.$taskParam/route.tsx
+++ b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.tasks.standard.$taskParam/route.tsx
@@ -119,7 +119,7 @@ export const loader = async ({ request, params }: LoaderFunctionArgs) => {
   // Live queue counts (two O(1) Redis reads) shown in the sidebar; history charts fetch
   // client-side through the metric resource. Flag off = no extra reads at all.
   let queueMetrics: { live: QueueLiveCounts; ids: QueueMetricIds } | null = null;
-  if (task.queue && (await canAccessQueueMetricsUi({ userId, organizationSlug }))) {
+  if (task.queue && (await canAccessQueueMetricsUi({ request, userId, organizationSlug }))) {
     const queueName = task.queue.name;
     const [lengths, concurrency] = await Promise.all([
       engine.lengthOfQueues(environment, [queueName]),
diff --git a/apps/webapp/app/routes/resources.orgs.$organizationSlug.projects.$projectParam.env.$envParam.runs.$runParam.spans.$spanParam/route.tsx b/apps/webapp/app/routes/resources.orgs.$organizationSlug.projects.$projectParam.env.$envParam.runs.$runParam.spans.$spanParam/route.tsx
index 098015978e2..90e67c8fc1b 100644
--- a/apps/webapp/app/routes/resources.orgs.$organizationSlug.projects.$projectParam.env.$envParam.runs.$runParam.spans.$spanParam/route.tsx
+++ b/apps/webapp/app/routes/resources.orgs.$organizationSlug.projects.$projectParam.env.$envParam.runs.$runParam.spans.$spanParam/route.tsx
@@ -171,6 +171,7 @@ export const loader = async ({ request, params }: LoaderFunctionArgs) => {
     // `type === "run" | "span"` discriminant downstream in `SpanView`.
     if (result.type === "run") {
       const queueMetrics = await resolveRunQueueMetrics({
+        request,
         userId,
         organizationSlug,
         projectParam,
diff --git a/apps/webapp/app/routes/resources.queues.concurrency-keys.ts b/apps/webapp/app/routes/resources.queues.concurrency-keys.ts
index 992ace788a5..67c2b9f500a 100644
--- a/apps/webapp/app/routes/resources.queues.concurrency-keys.ts
+++ b/apps/webapp/app/routes/resources.queues.concurrency-keys.ts
@@ -107,6 +107,7 @@ export const action = async ({ request }: ActionFunctionArgs) => {
   // this endpoint's data isn't reachable for orgs that can't see the UI. 404 (not 403) to hide it.
   if (
     !(await canAccessQueueMetricsUi({
+      request,
       userId,
       organizationSlug: environment.organization.slug,
     }))
diff --git a/apps/webapp/app/utils/queueMetricsUiAccess.test.ts b/apps/webapp/app/utils/queueMetricsUiAccess.test.ts
new file mode 100644
index 00000000000..8ee56a48255
--- /dev/null
+++ b/apps/webapp/app/utils/queueMetricsUiAccess.test.ts
@@ -0,0 +1,54 @@
+import { describe, expect, it } from "vitest";
+import { resolveQueueMetricsUiAccess } from "./queueMetricsUiAccess";
+
+describe("resolveQueueMetricsUiAccess", () => {
+  it("allows access when the org flag is on", () => {
+    expect(
+      resolveQueueMetricsUiAccess({
+        flagEnabled: true,
+        isImpersonating: false,
+        isViewingAsUser: false,
+      })
+    ).toBe(true);
+  });
+
+  it("denies access when the org flag is off and the session is not impersonating", () => {
+    expect(
+      resolveQueueMetricsUiAccess({
+        flagEnabled: false,
+        isImpersonating: false,
+        isViewingAsUser: false,
+      })
+    ).toBe(false);
+  });
+
+  it("allows an impersonating admin to preview the UI with the org flag off", () => {
+    expect(
+      resolveQueueMetricsUiAccess({
+        flagEnabled: false,
+        isImpersonating: true,
+        isViewingAsUser: false,
+      })
+    ).toBe(true);
+  });
+
+  it("withholds the preview while the admin is viewing as the user", () => {
+    expect(
+      resolveQueueMetricsUiAccess({
+        flagEnabled: false,
+        isImpersonating: true,
+        isViewingAsUser: true,
+      })
+    ).toBe(false);
+  });
+
+  it("keeps access for an org whose flag is on even while viewing as the user", () => {
+    expect(
+      resolveQueueMetricsUiAccess({
+        flagEnabled: true,
+        isImpersonating: true,
+        isViewingAsUser: true,
+      })
+    ).toBe(true);
+  });
+});
diff --git a/apps/webapp/app/utils/queueMetricsUiAccess.ts b/apps/webapp/app/utils/queueMetricsUiAccess.ts
new file mode 100644
index 00000000000..2b901833713
--- /dev/null
+++ b/apps/webapp/app/utils/queueMetricsUiAccess.ts
@@ -0,0 +1,41 @@
+/**
+ * The rule for who sees the Queue Metrics dashboard UI.
+ *
+ * Kept pure and free of server-only imports so it can be unit tested directly,
+ * and so there is one definition of the rule for the server gate to share.
+ */
+
+/**
+ * Resolves the per-org feature flag against the request's impersonation state.
+ *
+ * The bypass exists so an admin can preview the UI for a real org before it is
+ * revealed to that org's members, which the flag alone cannot express: flags are
+ * org-scoped, so turning one on to look at the UI exposes every member of the org.
+ *
+ * It keys on impersonation rather than `user.admin` because impersonation is
+ * scoped to one org and is a deliberate act, where admin status is neither — an
+ * admin browsing their own orgs would otherwise silently get the preview
+ * everywhere.
+ *
+ * It yields to `isViewingAsUser`, which is the admin asking to see exactly what
+ * the member sees; previewing unreleased UI through that toggle would make it
+ * lie. Suppressing the preview there only ever hides a read-only view, so it
+ * stays inside the display-only contract that toggle is held to.
+ *
+ * The caller is responsible for only reporting `isImpersonating` for an
+ * impersonation into a member of the org being resolved, so the bypass cannot
+ * reach across orgs.
+ */
+export function resolveQueueMetricsUiAccess(options: {
+  flagEnabled: boolean;
+  isImpersonating: boolean;
+  isViewingAsUser: boolean;
+}): boolean {
+  const { flagEnabled, isImpersonating, isViewingAsUser } = options;
+
+  if (flagEnabled) {
+    return true;
+  }
+
+  return isImpersonating && !isViewingAsUser;
+}
diff --git a/apps/webapp/app/v3/canAccessQueueMetricsUi.server.ts b/apps/webapp/app/v3/canAccessQueueMetricsUi.server.ts
index 0e3c142b272..e225fd507b7 100644
--- a/apps/webapp/app/v3/canAccessQueueMetricsUi.server.ts
+++ b/apps/webapp/app/v3/canAccessQueueMetricsUi.server.ts
@@ -1,4 +1,6 @@
 import { prisma } from "~/db.server";
+import { getImpersonationState } from "~/services/impersonation.server";
+import { resolveQueueMetricsUiAccess } from "~/utils/queueMetricsUiAccess";
 import { FEATURE_FLAG } from "~/v3/featureFlags";
 import { makeFlag } from "~/v3/featureFlags.server";
 
@@ -6,6 +8,7 @@ import { makeFlag } from "~/v3/featureFlags.server";
 // FeatureFlag table value, which wins over the off-by-default. Ingestion/emission is a
 // separate global flag; this only decides whether an org sees the metrics view.
 export async function canAccessQueueMetricsUi(options: {
+  request: Request;
   userId: string;
   organizationSlug: string;
 }): Promise<boolean> {
@@ -18,9 +21,16 @@ export async function canAccessQueueMetricsUi(options: {
   });
 
   const flag = makeFlag();
-  return flag({
+  const flagEnabled = await flag({
     key: FEATURE_FLAG.queueMetricsUiEnabled,
     defaultValue: false,
     overrides: (org?.featureFlags as Record<string, unknown>) ?? {},
   });
+
+  const { isImpersonating, isViewingAsUser } =
+    flagEnabled || !org
+      ? { isImpersonating: false, isViewingAsUser: false }
+      : await getImpersonationState(options.request, options.userId);
+
+  return resolveQueueMetricsUiAccess({ flagEnabled, isImpersonating, isViewingAsUser });
 }