diff --git a/apps/api/src/maps/road-refinement.controller.ts b/apps/api/src/maps/road-refinement.controller.ts
index 8ee9b7b..f0af2f2 100644
--- a/apps/api/src/maps/road-refinement.controller.ts
+++ b/apps/api/src/maps/road-refinement.controller.ts
@@ -199,7 +199,7 @@ export class RoadRefinementController {
   @ApiParam({ name: 'id', description: 'Candidate UUID' })
   async approveCandidate(@Param('id') id: string) {
     try {
-      // 1. Ensure approved_roads table exists
+      // 1. Ensure approved_roads table exists and all required columns exist
       await this.dataSource.query(`
         CREATE TABLE IF NOT EXISTS approved_roads (
           id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
@@ -214,6 +214,15 @@ export class RoadRefinementController {
           end_node BIGINT,
           approved_at TIMESTAMP DEFAULT NOW()
         );
+        ALTER TABLE approved_roads ADD COLUMN IF NOT EXISTS candidate_id UUID;
+        ALTER TABLE approved_roads ADD COLUMN IF NOT EXISTS name VARCHAR(255);
+        ALTER TABLE approved_roads ADD COLUMN IF NOT EXISTS highway VARCHAR(32);
+        ALTER TABLE approved_roads ADD COLUMN IF NOT EXISTS confidence FLOAT;
+        ALTER TABLE approved_roads ADD COLUMN IF NOT EXISTS "uniqueDriverCount" INT DEFAULT 1;
+        ALTER TABLE approved_roads ADD COLUMN IF NOT EXISTS oneway SMALLINT DEFAULT 0;
+        ALTER TABLE approved_roads ADD COLUMN IF NOT EXISTS start_node BIGINT;
+        ALTER TABLE approved_roads ADD COLUMN IF NOT EXISTS end_node BIGINT;
+        ALTER TABLE approved_roads ADD COLUMN IF NOT EXISTS approved_at TIMESTAMP DEFAULT NOW();
         CREATE INDEX IF NOT EXISTS approved_roads_geom_idx ON approved_roads USING GIST(geometry);
         CREATE UNIQUE INDEX IF NOT EXISTS approved_roads_cand_uidx ON approved_roads(candidate_id) WHERE candidate_id IS NOT NULL;
       `);