Three Rivers Members Enjoy Nationwide Branch Access! Extensive Branch Network and Free ATM Networks Provides Nationwide Accesss for Members You need to upgrade your Flash Player CLICK HERE to download the latest version. Did you know that Three Rivers FCU is a part of a shared branch network that allows members to travel nationwide and receive access to their accounts? Click the link below or call 1-800-919-CUSC (2872) to locate a shared branch, get driving directions, hours of operation and more. Visit our locations page for a branch map and hours listing of all Three Rivers Branch Locations, Share Branch Locations and fee-free AllianceONE/CO-OP Network ATMs.