Read this first
- People cross this structure — treat it as load-bearing. Confirm construction and load limits against the Pioneering merit badge / Scouting Magazine plans, and have a qualified adult supervise. A bridge failure can seriously injure someone.
- The dimensions below are for one specific plan. Spans, rope sizes, and anchors are engineered together — don't make it longer or higher without recalculating the whole design.
How it goes together
- 1Plan and site it — choose a safe span, plan anchors and clearances (foot rope ≤ 6 ft up).
- 2Build the A-frames — four A-frames (8-ft + 6-ft spars, three square lashings each); pair into two double A-frames.
- 3Build the anchors — a 3-2-1 anchor about 10 ft beyond each A-frame.
- 4Rig the foot rope — ½-in × 50-ft, tensioned with a rope tackle, kept low (≤ 6 ft).
- 5Rig the hand ropes — two ½-in × 50-ft ropes, tensioned, with stringers clove-hitched to the foot rope every 3–4 ft.
- 6Inspect everything — check all knots, lashings, and anchors before anyone gets on.
- 7Cross one at a time, supervised — only one person on the bridge, with spotters and adult oversight throughout.
When to use it
- The Pioneering merit badge and troop pioneering demonstrations.
- Crossing (or practicing crossing) a small gully, creek, or gap.
- A showpiece that teaches anchors, lashings, tensioning, and teamwork at real scale.
Common mistakes & safety
- One person on the bridge at a time. More than one multiplies the load and the sway — this is a firm rule.
- Check every knot, lashing, and anchor before crossing. The failure point is usually a loose lashing or a pulled anchor — inspect first, every time.
- Keep the foot rope low (≤ 6 ft). A slip from a low foot rope is a short step down, not a real fall.
- Sound spars and correct rope — use the specified ½-inch rope and solid spars; undersized rope or rotten poles fail under load.
- Build to the plan, don't improvise scale — making it longer or higher without recalculating is dangerous.
- Supervision and a controlled test — an experienced adult oversees, and the first crossing is a careful, spotted test.
Going deeper
- Foot rope to walk, hand ropes to hold. The monkey bridge in one line — and the stringers tie them together so your feet and hands move as one.
- Low is safer than high. Keeping the foot rope at or under 6 ft means a slip is a short step down, not a real fall.
- One at a time — no exceptions. The single most important rule on a monkey bridge; two people double the load and set it swinging.
Official source
Teach your Scouts how to build a monkey bridge — Scouting Magazine →The A-frames, anchors, spacing, rope sizes, tensioning, and the one-at-a-time / check-before-crossing rules are from this plan. This is a load-bearing structure — confirm the full current plan and supervision requirements before building.