Porter-Parsonfield Bridge, Covered bridge over Ossipee River between Porter and Parsonsfield, United States.

The Porter-Parsonfield Bridge is a covered wooden bridge that crosses the Ossipee River between two Maine towns. It has wooden trusses with curved arches inside and cedar shingle covering on the exterior.

A first bridge at this crossing of the Ossipee River was completed in 1800, followed by a second in 1808 and a third in 1858. The third bridge started a dispute between Porter and Parsonsfield over each town's share of the cost. The present 1876 bridge replaced it, and the state took over its maintenance in 1967.

This bridge shows how people in rural Maine communities built structures and what techniques they used at that time. The way it was constructed reflects the knowledge and skills of local craftspeople.

The bridge stands just east of the current North Road alignment (Maine State Route 160) between Porter and Parsonsfield, and is closed to vehicles, so it is reached on foot. The deck is 152 feet long with 18-foot-wide, 15-foot-6-inch-high portals; the sides are boarded to two-thirds of their height, leaving open gaps above.

The bridge has a particular detail worth noticing: each half was maintained by a different town, so they used different roofing materials on each side. You can still see this division today in the different roof coverings.