Signs are being modified to change the speed limit from 70 to 60 along Interstate 75 from Griffin to Sheridan Street. (Carline Jean / South Florida Sun Sentinel)

The Big Slowdown on Interstate 75, which reduces the speed limit on a couple of stretches notorious for locals putting the accelerator to the floor, is expected to continue for another few months as construction projects head toward completion.

The Florida Department of Transportation said construction projects have required reducing the speed limit on I-75 to 60 mph from 70 mph in each direction from Sheridan Street to just east of the Alligator Alley toll plaza.

The FDOT routinely lowers speed limits in construction zones to protect workers.

The FDOT has a pair of construction zones on I-75 — the southern project and the northern project — and one is scheduled to conclude in a few months.

The southern work zone on I-75, an area where the speed limit has been reduced to 60 mph from 70 mph, is scheduled to be completed this summer. (Florida Department of Transportation)

The southern zone extends from Sheridan Street to just south of Interstate 595, a 5.7-mile stretch costing $7.9 million, according to the FDOT. It should be completed this summer.

The northern zone extends from south of I-595 to just west of U.S. Highway 27, an 8-mile stretch. It’s scheduled to be completed in early 2023 and cost $8 million, according to the FDOT.

The I-75 northern work zone project extends from south of I-595 to west of U.S. 27 and is scheduled to be completed in 2023. (Florida Department of Transportation)

Among the scheduled projects are milling and resurfacing I-75 in each direction, installing guardrail and double-face guardrail on both the southern and northern projects, and installing signs and flashing beacons to alert wrong-way drivers at the I-75 southbound exit ramp to Griffin Road.

Editor’s note: This article has been updated to include the corrected map showing the northern work zone of Interstate 75.

Signs are being modified to change the speed limit from 70 mph to 60 along Interstate 75 from Griffin to Sheridan Street. (Carline Jean / South Florida Sun Sentinel)