The continues to investigate the .
According to Public Works Superintendent Marco Malich, his crew responded to the site after a citizen member notified the city around noon on Wednesday.
He credited the public for reporting the problem before the asphalt fell through completely.
"It could have caved in," he said "It was good that we got on it as quick as we did."
The sinkhole temporarily shut down Judson Street in front of and one of the lanes on Pioneer Way.
During the investigation, the crew drilled a 10-by-8 hole and almost 10 feet into the ground to determine the cause.
Although the exact source is still unknown, Malich said sinkholes typically occur when utility pipes are installed, and there isn't enough soil compaction under the road. He also said a punctured storm line could cause the land to depress.
Once the water flow in the basin decreases on Thursday, Malich said they will go down a nearby manhole to inspect further damage.
"From looking at the structure from the above, it does appear that we could have some watering issues that we're going to be taking care of."
In the meantime, he said the road is sealed, and it is safe for drivers to travel down Pioneer Way.