[concretebob]

It may be old pavement overlay.
They were working on the inside lanes.

SOP is to fix two lanes at a time, while leaving two live lanes.
Once the first two are complete, they are opened to traffic, and work begins on the other two.
The center lanes aren't getting any traffic.

[Arrowhead1952]

It may be old pavement overlay.
They were working on the inside lanes.

I haven't ever seen overlay that dark with stripes. I saw another picture that the dark pavement seemed to be thicker than the active traffic surface.