Work is underway to breathe new life into the 90-year-old Schuylkill Avenue bridge in northwest Reading.

A $7.3 million PennDOT project, begun Monday, involves repairing the bridge deck, replacing beams and expansion joints, rehabilitating the sidewalk, reconstruction the roadway approaches and improving drainage, officials said.

The bridge, built in 1924 and now deemed structurally deficient, carries Schuylkill Avenue, also designated as Route 183, over the Schuylkill River, Norfolk Southern train tracks and River Road.

During construction, traffic will be restricted to a single lane in both directions with reduced traffic lane widths on Schuylkill Avenue from Blair Avenue to West Windsor Street, officials said.

River Road will also be closed, and detour signs will be posted.

This project is set to wrap up in July.