New interchange configuration change to close State Route 21 in - WTOC-TV: Savannah, Beaufort, SC, News, Weather & Sports

New interchange configuration change to close State Route 21 in Port Wentworth

Diverging Diamond Interchange: State Route 21 at I-95 (Source: GDOT) Diverging Diamond Interchange: State Route 21 at I-95 (Source: GDOT)
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    Diverging diamond plan for State Route 21 and Interstate 95 interchange. (Source: GDOT)Diverging diamond plan for State Route 21 and Interstate 95 interchange. (Source: GDOT)

    The Georgia Department of Transportation has just unveiled what's called a diverging diamond interchange at Highway 21 and I-95 in Port Wentworth.

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PORT WENTWORTH, GA (WTOC) -

The Georgia Department of Transportation anticipates contractors to complete the reconfiguration of the diverging diamond interchange in Chatham County on Sunday, Dec. 18. This DDI will be the first one in the state outside of Metro Atlanta.

Barker Construction plans to close State Route (SR) 21 Friday night in preparation for the Sunday DDI changeover. During this time, SR 21 will be closed to thru-traffic under the Interstate 95 bridge. The Exit 109 ramps will be open to traffic with only right-hand turns on and off of SR 21. Traffic will be detoured beginning Friday night at 9 p.m. and the contractor will be out of the roadway and have SR 21 back open by Sunday at 8 p.m.

Detour routes will be signed as follows:

  • Motorists wanting to access SR 21 northbound at the interchange will travel northbound on I-95 to Exit 5 in South Carolina; reenter I-95 traveling southbound to Exit 109; turn right onto SR 21.
  • Motorists wanting to access SR 21 southbound at the interchange will travel southbound on I-95 to Exit 106; reenter I-95 traveling northbound to Exit 109; turn right onto SR 21.

Motorists are urged to seek alternate routes, if possible.

The following is the DDI detour map:

WTOC spoke to the emergency medical service director in Effingham County, and she said they are working on alternate routes for any ambulances that will need to go into Chatham County this weekend.

Port Wentworth Fire will have a truck crew parked on the west side of I 95 in the Food Lion parking lot all weekend just in case there are any emergencies.

As we get closer to Friday, we'll be sure to update you on the status of this closure.

For more information and a video on this project, click here.

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