The Boy Scouts of America’s Irvine Ranch Outdoor Education Center provides a unique wilderness setting for educational and recreational activities. The Center’s distinctive features include mining, ranch, astronomy/space and day use camps, amphitheater, conference center/dining hall, ROPE-COPE challenge course, aquatic center with junior Olympic pool, nature and training centers, bunk houses, staff housing, archery and BB gun ranges, orange grove, windmill and well. Fuscoe provided pro bono engineering services for an Arizona Crossing over Santiago Creek, which serves as the primary access route to the Center, a 210-acre site with 52 developed acres. Arizona Crossings facilitate road access over creeks even during flash flooding incidents. The location of the crossing was chosen to minimize impacts to surrounding critical habitat areas. Significant project challenges included the need to address blue-green sensitivity with eco-adaptive® design. A combination of grouted and loose rip-rap provides long-term road erosion protection as well as scour protection during future storm events for multiple utility crossings, low-flow pipes, creek bed and creek banks.