PITTSBURGH (KDKA) – When it comes to concrete, it’s relatively small, just a slip ramp from the Liberty Bridge to the crosstown expressway.

But it’s a crucial slip of contract that carries 20,000 cars a day.

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That’s why closings to work on the wall that holds back the bluff have been restricted to nights and weekends – that is until Tuesday morning.

“The ramp from the Liberty Bridge to 579 will be closed from nine to two weekedays through this week,” said Steve Cowan with PennDOT District 11.

That’s right, closed through the middle of the day for the rest of the week.

“They are going to be applying a waterproof seal on the wall next to that roadway,” Cowan said.

And while they do that work, the thousands of drivers who go through there will be forced to turn onto Forbes Avenue, go a couple of blocks up to Duquesne University and take a left past Consol Energy Center to get back to the entrance to Parkway North.

So why not do the work at night?

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“The coating is colored, so they need the daylight to match the wall to the hillside,” Cowan said.

Otherwise it could end up looking like a sloppy paint job.

Traffic will also be backed up along Route 910 for several months as a stretch was closed starting today. Crews are rebuilding Pierce Mill Road.

This means more than 7,000 drivers a day who use that road will be sent on an extensive detour that covers more than five miles.

Here is the suggested detour (via eastbound on Wexford Road):

  • Turn left onto North Chapel Drive
  • Turn right onto Perry Highway (Route 19)
  • Turn right onto Warrendale Bayne Road (Route 4052)
  • Follow Warrendale Bayne Road to the intersection with Graham Road
  • Continue straight onto Graham Road
  • Turn right onto Pearce Mill Road
  • Follow Pearce Mill Road back to Wexford Road
  • End detour

Westbound on Wexford Road will use the same detour in the opposite direction.

Construction is expected to be finished around mid-October.

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