Engineers working at Spencer Court say the recent wet weather has put their work to the test.
The flats in Newburn were demolished after rain caused a culvert to collapse, washing away the ground underneath.
Boulders put in place to support the construction work are withstanding the current wet weather but there are fears more rainfall may cause flooding.
Site staff say the next 48 hours are critical.
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Veterans, cadets, dignitaries and serving Northumberland Fusiliers have paid tribute to those killed at the Battle of the Somme
Clear spells. Showers. Brisk winds. Sunday looks like the better day
Two men whose grandfathers fought in the Tyneside Irish battalion and died together on the Somme have returned to visit their graves.