diff --git a/src/routes/+page.ts b/src/routes/+page.ts
index c86edd5..e84bfa0 100644
--- a/src/routes/+page.ts
+++ b/src/routes/+page.ts
@@ -1,5 +1,14 @@
 import type { PageLoad } from './$types';
 
+export interface RouteMapIndex {
+	routeId: string | number;
+	routeStart: string;
+	routeEnd: string;
+	created: string;
+	checked: string;
+	contents: string[];
+}
+
 export const load: PageLoad = async ({ fetch }) => {
 	const response = await fetch('map-index.json');
 
@@ -12,6 +21,6 @@ export const load: PageLoad = async ({ fetch }) => {
 	return {
 		maps: maps.sort((a: any, b: any) => {
 			return Number(a.routeId) - Number(b.routeId);
-		})
+		}) as RouteMapIndex[]
 	};
 };