Situated along the East Gallatin River, 3121 Spain Bridge Road is a rare riverfront holding combining genuine seclusion with everyday convenience. Over one-half mile of river forms the property's western boundary - one of southwest Montana's best-kept secrets for fly fishing. Fed by spring creeks and mountain runoff, the East Gallatin runs cold and clear year-round, supporting wild brown and rainbow trout. Because much of the river flows through private land, angler pressure stays low and quality remains high. A stocked trout pond adds to the fishery, while the property has been actively managed for pheasant and upland bird habitat, with cover and food sources supporting consistent wild populations. Whitetail deer, ducks, and the occasional moose round out the wildlife. Downtown Bozeman is 11 miles away, the airport 4.7 - close enough for convenience, far enough to feel like somewhere else. The main home was completed in 2023 by Yellowstone Traditions and spans over 5,850 square feet, grandfathered directly against the riverbank in a position that cannot be replicated. Stone, mortar, wood, steel, and glass exteriors deliver a modern mountain character, while vaulted ceilings capture views east to the Bridgers and west to the river. The great room centers on a stone fireplace flanked by a chef's kitchen with Viking and SubZero appliances. The master wing has direct river views, dual walk-in closets, double vanities, and indoor and outdoor showers. Above the four-car garage, a vaulted office and game room overlooks the pond and Spanish Peaks. A mudroom, dog wash, laundry, and storage for gear, guns, and wine complete the home. The cabin is a 1,200 square foot Yellowstone Traditions build - one bedroom, sleeping loft, bath, kitchen, and fireplace, with a porch overlooking the lawn, pond, and river. The manager's home is a two-story, one-bedroom, two-bathroom structure with a two-car garage, dog wash, and kennels, framing commanding views of the Bridgers and river. Adjacent sits a greenhouse, garden, and a historic log shop brought down from Trail Creek, restacked and repurposed for farm equipment. Each structure thoughtfully placed and finished - rarely does a property like this come to market on the East Gallatin.