By Ian Bush

PHILADELPHIA (CBS) –– A heads-up for late-night drivers on the Schuylkill Expressway in Philadelphia.

Part of I-76 will be down to one lane from 9 to 11 p.m. and closed until 5 a.m. most of next week for construction.

The work is taking place just east of the Vine Street Expressway interchange on the viaduct carrying Schuylkill Avenue over the expressway between Walnut and Chestnut Streets.

PennDOT warns of extensive delays during the project next Monday through Thursday.