UDOT project pageUDOT has a project description. They are expanding 191 from Motel 6 north to the bridge to have 5 lanes plus shoulders. They are also doing storm drain work.
Traffic volumes are above normal and congestion is anticipated particularly in the southbound lanes North of the Colorado River Bridge this week with an influx of tourists. Traffic models shows congestion typically picks up around meal times, and hotel check-in check-out times. It is particularly heavy at dusk. Avoid travel southbound into Moab between 3:30 p.m. and 6:30 p.m.
Northbound travel out of Moab typically peaks between 9:00 a.m. and 11:00 a.m. While there are still single lanes running in each direction as previous to construction, left turns will be limited and disruptive to traffic flow during peak times.
UDOT has some web cams from Arches south through town.