The average price of a gallon of gasoline in the United States fell by 2 cents in the past two weeks as crude oil prices continued a broad decline, according to the Lundberg survey released on Sunday.

Prices fell to an average of $3.46 per gallon for regular grade gasoline, according to the survey conducted Sept. 5. That extends a decline in prices to 11 weeks, survey publisher Trilby Lundberg said.

"Over the past two weeks the decline in crude and gasoline have been getting smaller and smaller," said Lundberg.

"We might be seeing the completion of pass-through from refiners to marketers to retailers of these lower crude oil prices."

The average price for gasoline is about 12 cents lower than a year ago.

The San Francisco Bay Area had the highest price within the survey area, at $3.88 per gallon for regular, while the lowest price was in Baton Rouge, Louisiana, where regular grade cost $3.11 per gallon.