North Dakota is hitting transportation issues getting the oil out of the state. However, oil can still be moved out it just costs more to do it.
North Dakota's Bakken oil production appears headed to over 200,000 barrels of oil per day by the end of 2008
Montana has over 50,000 barrels of oil per day from the Bakken oil field
Saskatechwan's Bakken oil production is also increasing to well over 40,000 barrels of oil per day in 2008