Are the holes/flags near the Birmingham bridge? They are suppose to erect some sort of structure to protect the trail while they work above, so they might be associated with that. Otherwise I have no clue.
I rode past those today and don’t have a clue what they could be for. Usually they take core samples to determine what the soil/rock composition is before they build something, but those holes are really spread far apart & they are in the middle of the trail.
(warning: wild ass guess) I wonder if PennDot is contemplating extending the on-ramp to the Parkway East there. That ramp (from Bates) is very short and doesnt give a lot of space to get up to speed before merging.
Yes, they marked water/gas service line junctions in my neighborhood this summer as well. I think maybe they were digitizing the information.
They used a metal or other detector to locate the underground valve/junction. Then they dug it out, to expose it, and did a visual confirmation. They then covered it back up, and marked the location with paint and a small flag.
I asked the guy if there was a problem or a leak that they were looking form and he said no, they were just locating them.
It is very possible that the EFT has many such “crossings.”
But, I have no way of knowing if that is what the boring holes meant, of course.
I’ve seen that equipment out there a few times this week (flagger and all). I’m very curious what they’re doing as well. The holes are only a few inches in diameter. I’m guessing they’re installing a roof over the trail to keep us dry in the rain. Oh! Wait! No! It’s radiant heat for the winter! Imagine a nice dry, warm trail ride during the winter!
Maybe I’ve been reading the “Pampered European cyclists” thread too much.