diff --git a/uniro_admin_frontend/src/page/buildingPage.tsx b/uniro_admin_frontend/src/page/buildingPage.tsx
index a494c097..81fab7fe 100644
--- a/uniro_admin_frontend/src/page/buildingPage.tsx
+++ b/uniro_admin_frontend/src/page/buildingPage.tsx
@@ -56,6 +56,8 @@ const BuildingPage = () => {
 
 	const { map, mapLoaded, mapRef, AdvancedMarker, Polyline } = useMap();
 
+	const cachedRoute = useRef<Map<string, google.maps.Polyline>>(new Map());
+
 	const [selectedBuildingId, setSelectedBuildingId] = useState<NodeId | null>(0);
 
 	// mode = add or view일 때 선택한 빌딩 좌표
@@ -115,20 +117,87 @@ const BuildingPage = () => {
 		if (!Polyline || !AdvancedMarker || !map) return;
 
 		for (const coreRoutes of coreRouteList.coreRoutes) {
-			const { routes: subRoutes } = coreRoutes;
+			const { coreNode1Id, coreNode2Id, routes: subRoutes } = coreRoutes;
+
+			const routeIds = subRoutes.map((el) => el.routeId);
+
+			const key = coreNode1Id < coreNode2Id ? routeIds.join("_") : routeIds.reverse().join("_");
+
+			if (cachedRoute.current.has(key)) {
+				const cachedPolyline = cachedRoute.current.get(key);
+				if (!cachedPolyline) continue;
+				google.maps.event.clearListeners(cachedPolyline, "click");
+				cachedPolyline.setMap(map);
+				cachedPolyline.setOptions({
+					strokeColor: "#808080",
+				});
+				google.maps.event.addListener(cachedPolyline, "click", (e: { latLng: google.maps.LatLng }) => {
+					if (mode === "view" || mode === "add") setSelectedBuildingId(0);
+					if (mode === "connect") {
+						const edges: CoreRoute[] = subRoutes.map(({ routeId, node1, node2 }) => {
+							return { routeId, node1, node2 };
+						});
+
+						const { edge: nearestEdge } = findNearestSubEdge(edges, {
+							lat: e.latLng.lat(),
+							lng: e.latLng.lng(),
+						});
+						const { node1, node2 } = nearestEdge;
+
+						const polyline = new Polyline({
+							map: map,
+							path: [
+								{ lat: node1.lat, lng: node1.lng },
+								{ lat: node2.lat, lng: node2.lng },
+							],
+							strokeColor: "#000000",
+							zIndex: 100,
+						});
+
+						const marker1 = new AdvancedMarker({
+							map: map,
+							position: { lat: node1.lat, lng: node1.lng },
+							content: waypointMarkerElement({ color: "red" }),
+							zIndex: 100,
+						});
+
+						const marker2 = new AdvancedMarker({
+							map: map,
+							position: { lat: node2.lat, lng: node2.lng },
+							content: waypointMarkerElement({ color: "blue" }),
+							zIndex: 100,
+						});
+						setSelectedEdge({
+							info: nearestEdge,
+							marker1,
+							marker2,
+							polyline,
+						});
+
+						setSelectedNode([node1, node2]);
+					}
+				});
+				setPolylineList((prev) => [...prev, cachedPolyline]);
+
+				continue;
+			}
 
 			const subNodes = [subRoutes[0].node1, ...subRoutes.map((el) => el.node2)];
 
-			const polyline = new Polyline({
+			const routePolyLine = new Polyline({
 				map: map,
 				path: subNodes.map((el) => {
 					return { lat: el.lat, lng: el.lng };
 				}),
 				strokeColor: "#808080",
+				geodesic: true,
 			});
 
+			cachedRoute.current.set(key, routePolyLine);
+			google.maps.event.clearListeners(routePolyLine, "click");
+
 			//polyline을 선택 방지
-			google.maps.event.addListener(polyline, "click", (e: { latLng: google.maps.LatLng }) => {
+			google.maps.event.addListener(routePolyLine, "click", (e: { latLng: google.maps.LatLng }) => {
 				if (mode === "view" || mode === "add") setSelectedBuildingId(0);
 				if (mode === "connect") {
 					const edges: CoreRoute[] = subRoutes.map(({ routeId, node1, node2 }) => {
@@ -174,15 +243,29 @@ const BuildingPage = () => {
 					setSelectedNode([node1, node2]);
 				}
 			});
-			setPolylineList((prev) => [...prev, polyline]);
+			setPolylineList((prev) => [...prev, routePolyLine]);
 		}
 
 		for (const coreRoutes of coreRouteList.buildingRoutes) {
-			const { routes: subRoutes } = coreRoutes;
+			const { coreNode1Id, coreNode2Id, routes: subRoutes } = coreRoutes;
+
+			const routeIds = subRoutes.map((el) => el.routeId);
+
+			const key = coreNode1Id < coreNode2Id ? routeIds.join("_") : routeIds.reverse().join("_");
+
+			if (cachedRoute.current.has(key)) {
+				const polyline = cachedRoute.current.get(key);
+
+				if (!polyline) return;
+
+				polyline.setMap(map);
+
+				continue;
+			}
 
 			const subNodes = [subRoutes[0].node1, ...subRoutes.map((el) => el.node2)];
 
-			const polyline = new Polyline({
+			const routePolyLine = new Polyline({
 				map: map,
 				path: subNodes.map((el) => {
 					return { lat: el.lat, lng: el.lng };
@@ -198,6 +281,8 @@ const BuildingPage = () => {
 				],
 				geodesic: true,
 			});
+
+			cachedRoute.current.set(key, routePolyLine);
 		}
 	};
 
@@ -274,13 +359,12 @@ const BuildingPage = () => {
 
 	// 지도가 로드되면 클릭 이벤트를 추가
 	useEffect(() => {
-		if (!map || !mapLoaded || !university) return;
+		if (!map || !mapLoaded || !university || routes.isLoading || buildings.isLoading) return;
 
 		if (routes.data) {
-			if (routes.data) {
-				drawRoute(routes.data, mode);
-			}
+			drawRoute(routes.data, mode);
 		}
+
 		if (buildings.data) {
 			addBuildings();
 		}
@@ -312,7 +396,7 @@ const BuildingPage = () => {
 			google.maps.event.clearListeners(map, "rightclick");
 			clearBuildingMarkers();
 		};
-	}, [map, mapLoaded, routes.data, buildings.data]);
+	}, [map, mapLoaded, routes.data, buildings.data, routes.isLoading, buildings.isLoading]);
 
 	useEffect(() => {
 		if (!map || !mapLoaded) return;