Speaking from experience on 4/19, there's some serious road construction on Old Highway 91 that will most likely result in delay to utah hills crags if you're coming from stg (sunset alley entrance road is right in the middle of the construction). 20+ minute wait possible. If you're going to woodbury road crags and coming from stg then take the gorge way and bypass the construction.
I couldn't find any info on UDOT website as to when this will be finished???