The Bollman Truss Railroad Bridge at Savage, Maryland is the sole surviving example of a revolutionary design in the history of American bridge engineering. The 160-foot (48.8 m) double-span is a suspension truss bridge. The first Bollman bridge was installed on the site; however, the current bridge is not the original. The current bridge was built in 1852 and moved to the site thirty years later. It is one of the oldest standing iron railroad bridges in the United States. Currently, however, it is in use carrying the Savage Mill Trail across the Little Patuxent River.
The Patterson Viaduct was built by the Baltimore and Ohio Railroad (B&O) as part of its Old Main Line during May to December 1829. The viaduct spanned the Patapsco River at Ilchester, Maryland. It was heavily damaged by a flood in 1866 and subsequently replaced with other structures.
Begun in 1898 in rural Frederick County, Maryland, the LeGore Bridge was completed and opened to the public in 1900. It was built and maintained by the owners of the LeGore Lime Company, including local businessman James William LeGore and his company advisor, Eugene Hammond. It is 340 feet (105m) in length, 27 feet (8.3m) wide and 64 feet (16.7m) high. The bridge is situated at 39°35'N 77°19'W. The five arch limestone bridge was restored in 1981 and 2009.
Bennies Hill Road Bridge is an iron bowstring arch bridge over Catoctin Creek near Middletown, Maryland, United States. It is one of two remaining bridges of its type in Maryland that remain in their original locations. The bridge was restored in 2009.
The Loys Station Covered Bridge is a multiple king post wooden covered bridge near Thurmont, Maryland. The bridge was burned by an arsonist in 1991 and rebuilt using surviving framing. The original bridge spanned 90 feet in one span, but has since been modified with a pier at the middle of the span. The bridge crosses Owen's Creek and is surrounded by a park.
The Utica Road Covered Bridge is a Burr truss wooden covered bridge located near Lewistown, Maryland. Originally built in 1834, it spanned the Monocacy River at the Devilbiss Bridge crossing. An 1889 flood damaged the bridge and the surviving half was moved to Fishing Creek in 1891. Like the nearby Loys Station Covered Bridge, a pier was inserted at the middle of the bridge to halve its span.
The Poffenberger Road Bridge, near Jefferson, Maryland, is a wrought iron bridge by the Wrought Iron Bridge Company of Canton, Ohio. The bridge is similar to the Fourpoints Bridge elsewhere in Frederick County. The bridge is a single-span double-intersection Pratt truss. It was built circa 1878 and remains in daily use.
La Veille, or La Veille Place, is a historic home located at Mutual, Calvert County, Maryland, United States. It is a 1+1⁄2-story gambrel-roofed brick house, of Flemish bond construction. A number of early-19th-century outbuildings include: a log corn crib, three barns, several small sheds, and a frame house that was created by the joining of two 18th-century log slave quarters. Between the "Quarters" and the main house is the La Veille family cemetery, enclosed within an elaborate late-19th-century wrought iron fence.
St. Mary's Catholic Church, Newport is a historic parish located in Newport, Charles County, Maryland, established in 1674. Several churches have been built on the property over its history. At present there are two churches remaining, one built in 1840, deconsecrated in 1906 and no longer used for religious services, and the current church building, built in 1954. The historic 1840 church is a rectangular brick structure, four bays in length and three bays wide. It is of simple architectural styling typical of the Greek Revival period in this locality. Located on the property is the parish cemetery, which includes the burial plot of the Brent-Merrick family, including congressman William Duhurst Merrick (1793–1857). It has several impressively scaled and ornamented monuments enclosed within a decorative mid-19th century wrought iron fence. Other memorial stones bear the signature of "A. Geddess," who founded the long-active Geddess monument firm of Baltimore in 1822.
Hopewell is a set of historic homes and farm complexes located at Union Bridge, Carroll County, Maryland, United States. It consists of four related groupings of 19th century farm buildings. The Hopewell complex consists of two historic farms: Hopewell and the smaller F.R. Shriner Farm.
The Bullfrog Road Bridge is a historic bridge between Emmitsburg, Frederick County and Taneytown, Carroll County in Maryland. The bridge crosses the Monocacy River on Bullfrog Road between the two counties. This bridge is a rare steel Parker through truss structure and is 183 feet in length and 16 feet-5 inches in width. It was built in 1908, by the York Bridge Company of York, Pennsylvania.
The Old Mill Road Bridge is a historic bridge near Rocky Ridge, Frederick County, Maryland, United States. The bridge spans Owens Creek southwest of Rocky Ridge on Old Mill Road. It is a Pratt half-hip through truss structure in a single span 69 feet (21 m) long and 16 feet (4.9 m). It was built in 1882 by the Pittsburgh Bridge Company, Pittsburgh, Pennsylvania.
The Roddy Road Covered Bridge is a small, one lane king post wooden covered bridge near Thurmont, Frederick County, Maryland. It crosses Owen's Creek near Thurmont. It is 40 feet long, 16 feet wide, with a 12 foot-8 inch clearance. It was built between 1850 and 1860.
The Crum Road Bridge is a historic bridge near Frederick, Frederick County, Maryland, United States. It spanned Israel Creek southeast of Walkersville. The bridge is an iron bowstring pony bridge that is 62 feet (19 m) in length and 15.8 feet (4.8 m) in width. The Crum Road Bridge was built on or about 1875, and was probably constructed by the King Iron Bridge Company of Cleveland, Ohio.
The McKinstry's Mills Historic District is a national historic district in Union Bridge, located in Carroll and Frederick County, Maryland. The district comprises the entirety of the settlement of McKinstry's Mills, a 26-acre (110,000 m2) hamlet consisting of six separate properties that were owned and developed in the 19th century by the McKinstry family, local millers. At the center is a 3+1⁄2-story grist mill constructed in 1844. Also included are the McKinstry homestead, built between 1825 and 1835; the residence of miller Samuel McKinstry, dated 1849; a store building of 1850; and two other small houses and a variety of outbuildings. There is also a 1908 Warren pony truss bridge.
The Cloisters, also known as Cloisters Castle, is a historic home in Lutherville, Baltimore County, Maryland, United States. The building was completed in 1932, after three years of construction. The house is 4 story house, irregular in elevation and plan with much architectural ornament. It is built of large, random-sized blocks of a native gray and gold colored rock known as Butler stone, with details principally of sandstone, wood from the site, plaster, and wrought iron. The main façade is dominated by two asymmetrically placed, projecting sections topped by massive half-timbered gables which were originally part of a Medieval house in Domrémy, France. It also has a massive stone octagonal stair tower, which contains a stone and wrought-iron spiral staircase and is crowned by a crenellated parapet and a small, round, stone-roofed structure from which one can exit onto the roof of the main tower. The house's roof is constructed of overlapping flagstones secured by iron pins, the only roof of this kind in America.
The Lorraine Park Cemetery Gate Lodge is a historic gatehouse located near Woodlawn, Baltimore County, Maryland, United States. It is a 1+1⁄2-story, Queen Anne–style stone-and-frame building designed by Baltimore architect Henry F. Brauns that was constructed in 1884. Adjacent to the house are the ornate cast-iron and wrought-iron Lorraine Cemetery gates.
Lombard Street Bridge is a historic truss bridge located at Baltimore, Maryland, United States. It is an 88-foot cast iron span consisting of three lines of trusses—two outer trusses of composite cast and wrought iron in a diagonal Pratt design and a center composite bowstring truss of Pratt-system web. It was designed in 1877 by engineer Wendel Bollman (1814–1884). The center bowstring is actually a bifurcated cast iron water main. This design for a bridge carrying a water line as a component of the truss bridge support itself is a unique design element of this bridge.
Antietam Iron Furnace Site and Antietam Village is a national historic district at Antietam, Washington County, Maryland, United States. It consists of the remains of a mid-18th to late-19th century iron furnace site, and the nearby related village. Remnants of the ironworks include a dam and race, a possible wheel pit or building foundation, the possible location of a furnace stack, and a four-arch stone bridge built by John Weaver in 1832. Also at the site are the dozen or so brick, stone, and wood houses comprising Antietam Village. Typical of the houses is the Mentzer house, a four-bay, two-storey stone structure of roughly coursed fieldstone, painted white.
The Wrought Iron Bridge Company was a bridge fabrication and construction company based in Canton, Ohio, United States. It specialized in the fabrication of iron truss bridges and was a prolific bridge builder in the late 19th century. It was one of the 28 firms consolidated by J. P. Morgan into the American Bridge Company in 1900. Many of its bridges have been listed on the National Register of Historic Places.
