If this was done on purpose, I hope they catch whoever did this...
Jeremy Dunn, a Portland cyclist, found something strange on his path while he as riding westbound on the bike lane on NE Marine Drive. A piece of tar paper with thumb-tacks pushed through it so they are perpendicular to the ground, just about the width of the bike lane. He took the photos shown above and below and contacted BikePortland to report the incident.
Fortunately, Dunn and his riding mate didn't flat. "We had our heads up and avoided it because it looked like refuse," he said, "but we came across another rider about a mile down the road who had mysteriously double flatted."
Marine Drive is a very popular bike route and it's also a high-speed arterial road with only one standard vehicle lane in each direction. It's not hard to imagine that some people simply don't like the presence of bikes out there. It's worth noting that this incident comes just about one month after well over 20 people flatted on tacks thrown on bike lanes in North Portland.
If you are in Portland and have seen anything like this, please let us know in the comment below. And if you've seen who did this, even better, let the local authorities know.