We are learning more about what's underneath Interstate 80 in Wharton as commuters deal with another day of heavy delays.

Assemblywoman Aura Dunn says the presence of a mine approximately 200 to 300 feet beneath the roadway is identified as the central cause of the sinkholes.

Dunn also says that the newest sinkhole is 15 feet by 15 feet and about 20-25 feet deep. She says the sinkhole has been stabilized.

This is the third sinkhole on I-80 in four months.

All I-80 traffic in Wharton is being detoured onto Rt 15 North, U-turn and take Rt 15 South onto I-80 East or West.

The crossover lane that has been in the works is on hold until more testing on the westbound side can be done, once complete the plan may be reconsidered.

Some legislation has been introduced to help businesses and municipalities that are impacted.