PORTLAND — Oakhurst Dairy is celebrating its 90th year in business.

Maine’s largest dairy says its milk was transported in glass bottles by two horse-drawn wagons in Portland when the company was incorporated 90 years ago Wednesday.

The company now processes 130,000 to 150,000 gallons of milk five days a week and distributes its dairy product in four states.

The Bennett family has owned and operated Oakhurst Dairy for three generations, with four family members now actively involved in running the business.

The company says Oakhurst is the largest family-owned, independent dairy in northern New England.