A crash involving multiple vehicles tied up traffic for several hours this moring. Grand Junctino Police say a car drifted into oncoming traffic and struck another one head on. At least two people were taken to the hospital with non-life threatening injuries. It happened on Patterson Road near 28 1/4 Road just as morning the morning commute was getting underway. Traffic was backed up past 29 Road for more than an hour. Citations are pending.