NASHVILLE, Tenn. (WTVF) — The Tennessee Department of Transportation will close a major Nashville interchange this weekend as part of the project to re-do Interstate 440.

The I-65/I-440 interchange will close Friday at 9 p.m. as crews work to connect the bridges using large cranes. TDOT says this is the most expensive project they've done.

The idea behind the project is to expand I-440 into three lanes going in each direction. But in order to that, they need to add a beam to support the bridge.

Northbound I-65 traffic will be detoured onto I-440 east. Southbound traffic on I-65 will be detoured to I-440 west. The work will also close Franklin Pike from Berry Road to Woodmont Boulevard.

The interchange is set to reopen Monday morning. Law enforcement will be out to help with traffic at the following locations:

Hillsboro Pike at I-440: Officers will monitor traffic at the Hillsboro Pike/I-440 ramps and will manually control traffic signals at Woodlawn Drive and Sharondale Drive/Lombardy Avenue to facilitate the flow of traffic from I-440 to Hillsboro Pike. The two traffic signals on the Hillsboro Pike overpass that normally control the turning of traffic onto I-440 will be set to flash so as not to interfere with the increased traffic flow on Hillsboro Pike.

Nolensville Pike at I-440: Officers will monitor traffic at the access ramps on Nolensville Pike and will manually control traffic signals to facilitate the flow of traffic from I-440 onto Nolensville Pike.

Wedgewood Avenue at I-65: Officers will monitor traffic at the access ramps on Wedgewood Avenue at I-65 as well as traffic at the intersection of Wedgewood Avenue & 8th Avenue South. Officers will manually control the traffic signals at 8th Avenue South to facilitate the flow of traffic from the I-65 interchange onto Wedgewood Avenue & 8th Avenue South. Officers posted at the I-65/Wedgewood Avenue access ramps will also manually control the traffic signals at those intersections.

Harding Place at I-65: Officers will monitor traffic at the I-65 access ramps on Harding Place as well as traffic at the intersection of Franklin Pike & Harding Place and Trousdale Drive & Harding Place. Officers will manually control the traffic signals located at the access ramps and at the Franklin Pike & Trousdale Drive intersections to facilitate traffic flow while prioritizing traffic exiting from I-65 north.

Old Hickory Boulevard at I-65: Officers will monitor traffic at the I-65 access ramps on Old Hickory Boulevard as well as traffic at the intersection of Franklin Pike & Old Hickory Boulevard and Franklin Pike Circle & Old Hickory Boulevard. Officers will manually control the traffic signals at the access ramps and at the Franklin Pike & Old Hickory Boulevard intersection to enhance traffic flow while prioritizing traffic exiting from I-65 north.

During non-peak hours, when the manual control of traffic signals is not needed, a response team of MNPD officers will be working to address any issues that arise.