diff --git a/lighthouse-core/fraggle-rock/gather/runner-helpers.js b/lighthouse-core/fraggle-rock/gather/runner-helpers.js
index 903d4dda6de8..ee8ac4fa5bb7 100644
--- a/lighthouse-core/fraggle-rock/gather/runner-helpers.js
+++ b/lighthouse-core/fraggle-rock/gather/runner-helpers.js
@@ -15,7 +15,6 @@
  * @property {LH.Gatherer.GatherMode} gatherMode
  * @property {Map<string, LH.ArbitraryEqualityMap>} computedCache
  * @property {LH.Config.Settings} settings
- * @property {string} url
  */
 
 /** @typedef {Record<string, Promise<any>>} IntermediateArtifacts */
@@ -75,7 +74,6 @@ async function collectPhaseArtifacts(options) {
     gatherMode,
     computedCache,
     settings,
-    url,
   } = options;
   const priorPhase = phaseToPriorPhase[phase];
   const priorPhaseArtifacts = (priorPhase && artifactState[priorPhase]) || {};
@@ -92,7 +90,6 @@ async function collectPhaseArtifacts(options) {
         : /** @type {Dependencies} */ ({});
 
       return gatherer[phase]({
-        url,
         gatherMode,
         driver,
         baseArtifacts,
diff --git a/lighthouse-core/fraggle-rock/gather/snapshot-runner.js b/lighthouse-core/fraggle-rock/gather/snapshot-runner.js
index 578e90a71a30..a51d3ac9b13e 100644
--- a/lighthouse-core/fraggle-rock/gather/snapshot-runner.js
+++ b/lighthouse-core/fraggle-rock/gather/snapshot-runner.js
@@ -46,7 +46,6 @@ async function snapshotGather(options) {
       const artifactDefinitions = config.artifacts || [];
       const artifactState = getEmptyArtifactState();
       await collectPhaseArtifacts({
-        url,
         phase: 'getArtifact',
         gatherMode: 'snapshot',
         driver,
diff --git a/lighthouse-core/fraggle-rock/gather/timespan-runner.js b/lighthouse-core/fraggle-rock/gather/timespan-runner.js
index f9be1e664ea6..870b04e2f37f 100644
--- a/lighthouse-core/fraggle-rock/gather/timespan-runner.js
+++ b/lighthouse-core/fraggle-rock/gather/timespan-runner.js
@@ -37,7 +37,6 @@ async function startTimespanGather(options) {
   const artifactState = getEmptyArtifactState();
   /** @type {Omit<import('./runner-helpers.js').CollectPhaseArtifactOptions, 'phase'>} */
   const phaseOptions = {
-    url: initialUrl,
     driver,
     artifactDefinitions,
     artifactState,
@@ -54,7 +53,6 @@ async function startTimespanGather(options) {
   return {
     async endTimespanGather() {
       const finalUrl = await driver.url();
-      phaseOptions.url = finalUrl;
 
       const runnerOptions = {config, computedCache};
       const artifacts = await Runner.gather(
diff --git a/lighthouse-core/gather/gatherers/seo/robots-txt.js b/lighthouse-core/gather/gatherers/seo/robots-txt.js
index 03db48c92920..220d654e2ca2 100644
--- a/lighthouse-core/gather/gatherers/seo/robots-txt.js
+++ b/lighthouse-core/gather/gatherers/seo/robots-txt.js
@@ -46,7 +46,8 @@ class RobotsTxt extends FRGatherer {
       });
     }
 
-    const robotsUrl = new URL('/robots.txt', passContext.url).href;
+    const {finalUrl} = passContext.baseArtifacts.URL;
+    const robotsUrl = new URL('/robots.txt', finalUrl).href;
     await passContext.driver.fetcher.enable();
     return passContext.driver.fetcher.fetchResource(robotsUrl)
       .catch(err => ({status: null, content: null, errorMessage: err.message}));
diff --git a/lighthouse-core/gather/gatherers/web-app-manifest.js b/lighthouse-core/gather/gatherers/web-app-manifest.js
index cadbd9111fb5..6736755d4653 100644
--- a/lighthouse-core/gather/gatherers/web-app-manifest.js
+++ b/lighthouse-core/gather/gatherers/web-app-manifest.js
@@ -94,8 +94,8 @@ class WebAppManifest extends FRGatherer {
    */
   getArtifact(context) {
     const driver = context.driver;
-
-    return WebAppManifest.getWebAppManifest(driver.defaultSession, context.url);
+    const {finalUrl} = context.baseArtifacts.URL;
+    return WebAppManifest.getWebAppManifest(driver.defaultSession, finalUrl);
   }
 }
 
diff --git a/lighthouse-core/test/fraggle-rock/gather/runner-helpers-test.js b/lighthouse-core/test/fraggle-rock/gather/runner-helpers-test.js
index 4376dda1dc35..cd17908c3d2e 100644
--- a/lighthouse-core/test/fraggle-rock/gather/runner-helpers-test.js
+++ b/lighthouse-core/test/fraggle-rock/gather/runner-helpers-test.js
@@ -132,7 +132,6 @@ describe('collectPhaseArtifacts', () => {
       it(`should run the ${phase} phase of gatherers in ${gatherMode} mode`, async () => {
         const {artifactDefinitions, gatherers} = createGathererSet();
         await helpers.collectPhaseArtifacts({
-          url: 'https://example.com',
           driver,
           artifactDefinitions,
           artifactState,
@@ -157,7 +156,6 @@ describe('collectPhaseArtifacts', () => {
   it('should gather the artifacts', async () => {
     const {artifactDefinitions} = createGathererSet();
     await helpers.collectPhaseArtifacts({
-      url: 'https://example.com',
       driver,
       artifactDefinitions,
       artifactState,
@@ -190,7 +188,6 @@ describe('collectPhaseArtifacts', () => {
     ];
 
     await helpers.collectPhaseArtifacts({
-      url: 'https://example.com',
       driver,
       artifactDefinitions,
       artifactState,
@@ -224,7 +221,6 @@ describe('collectPhaseArtifacts', () => {
 
     const {artifactDefinitions, gatherers} = createGathererSet();
     await helpers.collectPhaseArtifacts({
-      url: 'https://example.com',
       driver,
       artifactDefinitions,
       artifactState,
diff --git a/lighthouse-core/test/gather/gatherers/css-usage-test.js b/lighthouse-core/test/gather/gatherers/css-usage-test.js
index eda00c61215f..a9868ea289e9 100644
--- a/lighthouse-core/test/gather/gatherers/css-usage-test.js
+++ b/lighthouse-core/test/gather/gatherers/css-usage-test.js
@@ -42,7 +42,6 @@ describe('.getArtifact', () => {
     /** @type {LH.Gatherer.FRTransitionalContext} */
     const context = {
       driver: driver.asDriver(),
-      url: 'https://example.com',
       gatherMode: 'snapshot',
       computedCache: new Map(),
       baseArtifacts: createMockBaseArtifacts(),
@@ -98,7 +97,6 @@ describe('.getArtifact', () => {
     /** @type {LH.Gatherer.FRTransitionalContext} */
     const context = {
       driver: driver.asDriver(),
-      url: 'https://example.com',
       gatherMode: 'timespan',
       computedCache: new Map(),
       baseArtifacts: createMockBaseArtifacts(),
@@ -154,7 +152,6 @@ describe('.getArtifact', () => {
     /** @type {LH.Gatherer.FRTransitionalContext} */
     const context = {
       driver: driver.asDriver(),
-      url: 'https://example.com',
       gatherMode: 'snapshot',
       computedCache: new Map(),
       baseArtifacts: createMockBaseArtifacts(),
diff --git a/types/gatherer.d.ts b/types/gatherer.d.ts
index d57223d741c1..c25026aace2b 100644
--- a/types/gatherer.d.ts
+++ b/types/gatherer.d.ts
@@ -47,8 +47,6 @@ declare module Gatherer {
 
   /** The limited context interface shared between pre and post Fraggle Rock Lighthouse. */
   interface FRTransitionalContext<TDependencies extends DependencyKey = DefaultDependenciesKey> {
-    /** The URL of the page that is currently active. Might be `about:blank` in the before phases */
-    url: string;
     /** The gather mode Lighthouse is currently in. */
     gatherMode: GatherMode;
     /** The connection to the page being analyzed. */