This Wherigo cartridge will take you on a tour of some of the concrete bridge sites built by the Milwaukee Road in Story and Marshall Counties. There is a lot of driving and a hike or mountain bike trek with a 3.5 mile round-trip in store for you, hence the high D/T.
Download the cartridge Quirky Quest and play it on a Wherigo-enabled device, be it a Garmin Colorado, NUVI or Oregon, Java-enabled phone (using OpenWig), or an Android phone (using WhereYouGo)