A section of Adams Street north of Clay Street near Walnut Hills Restaurant was down to one lane for most of Tuesday while city sewer department employees replaced a caved-in 8-inch clay sewer line.

The damage to the line caused a section of the street near Walnut Hills to sag. Dane Lovell, water, sewer and gas superintendent, said the problem was located by running a video camera through the line and isolating the site.

Lovell said the crew excavated the area under the street because the problem with the line became worse, requiring the replacement.

He said city officials were aware of the problem, “But we just weren’t able to get on it until now.”

The line, he said, is part of the old sewer system, adding the problem did not affect the businesses or homes in the area. He said the repairs were expected to be complete Tuesday afternoon and the hole filled to allow traffic to move through the area.