The construction is taking place along the south bank of the American River between Watt Avenue and the Mayhew Drain. About two dozen trucks will be making up to 150 trips a day.
Dave Cook is the project manager. He says the levee is eroding because of abundant Sierra snowmelt.
"When that happens the water speeds up and actually starts to tear the banks away and the sediment starts to transport itself down the river and it causes problems in the fact that if we had a failure it would obviously flood businesses and homeowners in that area."
Crews will be adding riprap, rock, soil and wooded debris to the levee. Cook says most of the improvements should be finished by the end of this month.
The work is part of a larger levee repair project on four sites totaling about $4 million with most of the money coming from the federal government.