Commuters will have to find an alternative route as on Monday the Roberto Clemente Sixth Street Bridge closed to undergo a $34.3 million bridge rehabilitation project.

The project is expected to be completed in December 2023.

The project will include repairs to the structural steel, concrete/masonry substructures, replacement of the concrete deck and sidewalks, replacement of the expansion dams, refurbishment of pylons, repairs to the stairs on the downtown side of the bridge, and replacement of navigational light and street lighting to resemble its original appearance from the 1920s.

Also, the roughly 11,000 locks on the bridge will be removed and donated to the Industrial Arts Workshop of Hazelwood.

Vehicles traveling outbound will be detoured using Fort Duquesne Boulevard, the Andy Warhol Bridge, Sandusky Street, East Lacock Street, and Federal Street.

Inbound traffic will be detoured using East General Robinson Street, Sandusky Street, the Andy Warhol Bridge, and Fort Duquesne Boulevard.

Bicycle traffic and pedestrian traffic will be detoured using Fort Duquesne Boulevard the Andy Warhol Bridge and Isabella Street.

This is the third Sister Bridges rehabilitation project, the Andy Warhol Bridge underwent its $25.4 million rehabilitation project in 2016-17 and the Rachel Carson Bridge rehabilitation project in 2019-20.