Question: The Pineground Bridge formerly carried Depot Road over the Suncook River into a town with a population of what?

full_context: Document 1: Hillsborough County, New Hampshire: Hillsborough County is the most populous county in the U.S. state of New Hampshire. As of the 2010 census, the population was 400,721. The population was estimated at 407,761 in 2016. Its county seats are Manchester and Nashua. Hillsborough is northern New England's most populous county as well as its most densely populated.
Document 2: Henniker, New Hampshire: Henniker is a town in Merrimack County, New Hampshire, United States. As of the 2010 census, the town had a total population of 4,836. Henniker is home to New England College, Ames State Forest, Craney Hill State Forest and Pats Peak Ski Area.
Document 3: Chichester, New Hampshire: Chichester is a town in Merrimack County, New Hampshire, United States. The population was 2,523 at the 2010 census.
Document 4: Arthur A. Smith Covered Bridge: The Arthur A. Smith Covered Bridge is a historic covered bridge in Colrain, Massachusetts. It is the only Burr truss bridge in the state, and is one of a few 19th century covered bridges in the state. The bridge was built in 1869 in the Shattuckville section of Colrain, and was severely damaged during a flood in 1878. It then sat abandoned until 1896, when the town voted to rehabilitate it and moved it to its present location, spanning the North River on Lyonsville Road. The area was then known as the "Arthur A. Smith Flats", after a prominent local resident who lived in the area. The bridge was strengthened in 1920 with the addition of laminated beam arches. It was listed on the National Register of Historic Places in 1983. In 1991 it was taken out of service and moved to adjacent land. Following restoration work in 2005–07 it was placed back in service, and was only modestly damaged by Hurricane Irene.
Document 5: Concord, New Hampshire: Concord is the capital city of the U.S. state of New Hampshire and the county seat of Merrimack County. As of the 2010 census, its population was 42,695.
Document 6: Richmond, New Hampshire: Richmond is a town in Cheshire County, New Hampshire, United States. The population was 1,155 at the 2010 census.
Document 7: Canterbury, New Hampshire: Canterbury is a town in Merrimack County, New Hampshire, United States. The population was 2,352 at the 2010 census.
Document 8: Underspanned suspension bridge: An underspanned suspension bridge (also upper deck suspension bridge) is a rare type of suspension bridge that was developed in the early 19th century. It differs from its ancestor, the simple suspension bridge, in that the deck is raised on posts above the main cables. The raised deck is less stable than a deck laid on or hung below the cables, and very few underspanned suspension bridges have been built. Examples include Guillaume Henri Dufour's Pont des Bergues (1834); and James Smith’s Micklewood Bridge. Similar bridges were proposed by Robert Stevenson in 1820 for a bridge over the River Almond between Edinburgh and Queensferry, and by a Mr. Armstrong for a bridge at Clifton. Part of the roadway on the land side of the piers of the Hammersmith Bridge was constructed in this manner. In the late 19th century and into the 20th century a few bridges of this type were constructed.
Document 9: New Durham, New Hampshire: New Durham is a town in Strafford County, New Hampshire, United States. The population was 2,638 at the 2010 census. It is drained by the Merrymeeting , Cocheco and Ela rivers, and is known for Merrymeeting Lake. New Durham is home to the Powder Mill Fish Hatchery. Also located here is the Lions Club's Camp Pride, a camp for children and adults with special needs.
Document 10: Dearborn River High Bridge: The Dearborn River High Bridge is a Pratt half-deck truss bridge built in 1897, and has been placed on the National Register of Historic Places as it is one of the few bridges of its type left standing in the United States. On a half-deck bridge, the deck is attached in the center rather than, as is more common, top or bottom of the superstructure. It crosses the Dearborn River on Lake Bean Road (Montana Secondary 435) about 15 mi southwest of Augusta, Montana. The unusual design of the Dearborn River High Bridge suits it to carry light loads across high/deep crossings. It has four spans and originally had a wooden plank deck. It is the last standing pin-connected Pratt half-deck truss bridge left in the United States. Construction cost was $9,997. Construction began in 1896 and completed in 1897.
Document 11: Henniker (CDP), New Hampshire: Henniker is a census-designated place (CDP) and the main village in the town of Henniker in Merrimack County, New Hampshire, United States. The population of the CDP was 1,747 at the 2010 census, out of 4,836 in the entire town of Henniker. The CDP is the home to New England College.
Document 12: Raymondville Parabolic Bridge: Raymondville Parabolic Bridge is a historic lenticular truss bridge located at Raymondville in St. Lawrence County, New York. It was constructed in 1886 and spans the Raquette River. It was constructed by the Berlin Iron Bridge Co. of East Berlin, Connecticut. It was closed to vehicular traffic in 1979 was used briefly as a pedestrian bridge. then closed completely to all traffic for safety reasons. There is now no public access to the bridge's actual deck, but both approaches are accessible on foot. There is a nearby similar but shorter version of this bridge also built by the Berlin Iron Bridge Co. still in use linking River Road and NY 56 at Yaleville, New York. In the late 50's tragedy struck on the parabolic bridge. A small boy while walking to school one morning lost his footing and slipped on some ice and fell under the railing into the Raquette River where he drowned.
Document 13: Perkiomen Bridge: The Perkiomen Bridge, originally built 1798-99 and widened in 1928, is one of the oldest stone arch bridges in the United States still in use. It crosses Perkiomen Creek near Collegeville, Pennsylvania. The bridge's six semi-circular arches cover a total of over 300 ft . The longest arch spans 76 ft . Its decorative piers and belts courses are unusual for a bridge this old. A lottery financed $20,000 of the original construction. The bridge carried the main road from Philadelphia to Reading, known at various times as the Manatawny Pike, Germantown Pike, the Philadelphia-Reading Pike, and US 422. Since the construction of the US 422 bypass, the road has been known as Ridge Pike or Old US 422.
Document 14: New Henniker Bridge: New Henniker Bridge or New Bridge was a covered bridge in West Hopkinton, New Hampshire, which carried Henniker Road over the Contoocook River. The truss bridge was completed in 1863, and was the second bridge on the site. The original stone arch bridge was built in 1845 and was washed away by flood in 1852. The bridge was just over 20 ft wide and 180 ft long, and consisted of a single span supported by two triple lattice trusses resting on granite abutments. The patent drawings show an all-timber truss with fixed intersection angles in the center of the span. At the ends of the span the angles of the diagonals vary. The end post is vertical, and each brace further from it is sloped a little more.
Document 15: Pineground Bridge: The Pineground Bridge, also known as the Depot Road Bridge or the Thunder Bridge, is a through-type lenticular truss bridge that formerly carried Depot Road over the Suncook River in Chichester, New Hampshire. The bridge was built in 1887 by the Berlin Iron Bridge Co., and is the only one of its type (and only one of for lenticular truss bridges of any type, as of 2004) in the state. It is 96 ft long and 16 ft wide, and rises 15 ft above the river. It is mounted on abutments made of unmortarted ashlar granite. The decking and rails are made of wood. The bridge has not undergone major alterations since its construction. Some of its stringers were replaced during the 1981-2 restoration, wooden parts were also replaced, and a number of decorative parts have been lost over the years.
ground_truth: 2,523