Commuters to See Ga. 400 Lane Closures Thursday

Dunwoody commuters should expect big delays on Ga. 400 northbound near Haynes Bridge Road from 10 a.m. to 1 p.m. Thursday as Alpharetta traffic crash investigators try to determine exactly what happened in .

The Alpharetta Department of Public Safety is closing two northbound lanes of Ga. 400 from the Haynes Bridge entrance ramp onto Ga. 400, extending north toward Old Milton Parkway, according to George Gordon, spokesman for the .

More than the Ga. 400 lanes will be closed. As the accident began on the northbound entrance ramp from Haynes Bridge, investigators will close the ramp also.

"All motorists will experience traffic volume delays and are encouraged to use alternate routes of travel," Gordon said. "While two lanes of Ga. 400 traffic will remain open for the majority of time, motorists are asked to slow down considerably for safety."

Motorists can use Westside Parkway from Haynes Bridge Road north to Old Milton Parkway, and then a short drive east to the Old Milton/GA 400 interchange. Or, if you are already on the east side of GA 400, take North Point Parkway north to Old Milton, but this time turn west (left) toward the interchange.

If you are driving north on Ga. 400, you might consider exiting at Mansell Road (exit 8) if you are headed to the North Point Mall area to avoid traffic backing up from the lane closures.

Separately, how would you like another lane on Ga. 400 during your morning commute? It’s likely to happen next month, when the Georgia Department of Transportation opens a shoulder lane southbound from Holcomb Bridge Road to the North Springs Marta Station, The Atlanta Journal Constitution reported.

The lane would be open to motorists from 6:30 to 9:30 a.m., weekdays.

Jill Goldberg, with GDOT, told WSBTV that time period has the most congestion and slowest travel time.