The pile of mulch in the bicycle lane, A1A/SE Ocean Boulevard on the Evans Crary Jr. Bridge over the St. Lucie River, is perhaps related to these images taken in Possom Long Nature Center, Stuart, FL. "Doing the math" is relative to 'plywood' and mulch? A small, flattened cardboard box can be seen in the bridge service-lane slightly east from the neat pile of mulch in the middle of the bike lane. Apparently the bike lane is also used as racing practice. The city of Stuart has a 'Welcome' archway that in some ways is comparable to the Arc de Triomphe in the city of Paris, European France.