People planning to attend commencement at the University of Colorado at Boulder on Friday morning, May 12, are encouraged to leave ample time for driving, particularly people arriving via U.S. 36. Traffic volume is expected to be about half of game-day traffic during CUÂ’s football season, which sometimes clogs the Turnpike even without construction delays. Because of construction work along U.S. 36, similar tie-ups could result, although all lanes reportedly will be open.