Public Works and a contractor were lining a section of the riverfront interceptor sewer line. It's a maintenance or repair project. To isolate the segment, workers first built a bypass pipeline.
The bypass crosses the path a few hundred feet to the east of this scene and is no sweat to step or hop over. But the apparatus at the manhole right by the Lafayette Street trestle is best avoided altogether,
It's a small and temporary inconvenience for path users. The city is working to maintain our essential infrastructure, and that is good to see. (hh)