The highway between Ross Dam trailhead and Silver Star Gate closes every winter as the snowfall is too heavy in that portion of the North Cascades.
Drivers are advised to expect delays and to drive slowly in order to keep the road crew safe.
WSDOT crews cleared most of the snow this week.
Drivers caught by the cameras will receive a notice in the mail, but no fines will be issued.
The previous sloth, known online as “Slothy”, was taken down by WSDOT on March 18.
The project is expected to take about two months to complete.
Church Road was closed for a period of time as local officials investigated the crash.
The lane reduction will allow crews to prepare for a culvert repair project at the bridge.
Residents are being asked to use Main Street as a detour route.
The new James Street Bridge is expected to be open by early summer.