PITTSBURGH (KDKA) – Police are blocking off James Street in the North Side after a large sinkhole has developed.

Officials say the hole is continuing to grow with each moment that passes. It’s in the 1100-block of the street, near Allegheny General Hospital.

The hole is reportedly about the size of a basketball on the surface, but a large cavern about 15 to 20 feet has opened up underneath.

VIDEO: See inside the sink hole:

(Video via Todd Kiester)

A large water main break has also closed Thompson Run Road northbound in Ross Township, between Vilsack and Siebert roads.

Police are on scene directing traffic.

Stay with KDKA for more information.

You May Also Be Interested In These Latest News Stories

Join The Conversation On The KDKA Facebook Page
Stay Up To Date, Follow KDKA On Twitter

More From CBS Pittsburgh

Get The All New CBS Local App
KDKA Weather App

Watch & Listen LIVE