The Georgetown–Silver Plume National Historic Landmark District is a federally designated United States National Historic Landmark that comprises the Town of Georgetown, the Town of Silver Plume, and the Georgetown Loop Historic Mining & Railroad Park between the two silver mining towns along Clear Creek in the Front Range of the Rocky Mountains in Clear Creek County, Colorado, United States.
The Cherry Creek Bridge is a concrete arch bridge spanning Cherry Creek near Franktown, Colorado. State Highway 83 runs atop it. It was built in 1948 by J.H.& N.M. Monaghan & Associates and is listed on the National Register of Historic Places. It is located within Castlewood Canyon State Park.
The Black Squirrel Creek Bridge carries U.S. 24 over Black Squirrel Creek in El Paso County, Colorado. Prior to 2012, it was locally known as the "green bridge" or "old green bridge"—a historic single-span, Parker through truss bridge that was completed in 1935 and listed on the National Register of Historic Places in 2002. Because it no longer met highway safety standards, the bridge was dismantled and replaced by a newer span in 2012.
The Slate Creek Bridge is a riveted steel Parker pony truss bridge spanning the Blue River 9 miles (14.5 km) north of Silverthorne, Colorado. It is named after the road it carries, Slate Creek Road. The bridge was rehabilitated in 1951. This rare example of an uncommon truss type was listed on the National Register of Historic Places in 1985.
The Zion – Mount Carmel Highway is a 25-mile (40 km) long road in Washington and Kane counties in southern Utah, United States, that is listed on the National Register of Historic Places and is a National Historic Civil Engineering Landmark.
The Hayden Arch Bridge is a concrete arch bridge on old US 14/US 16 near Cody, Wyoming. It is the only example of its kind in Wyoming. Built in 1924–25, the single-span bridge spans 115 feet (35 m) with two smaller approach arches between rock canyon walls. The bridge carries the Cody-Yellowstone Highway across the Shoshone River with a shallow open-spandrel central arch and nominally arched approach spans. The bridge is named after C. E. Hayden, an engineer with the Wyoming State Highway Department, who designed the bridge and supervised its construction. It was built by H. S. Crocker of Denver, Colorado.
Allan Teator Road Stone Arch Bridge is a historic stone arch bridge located at West Durham in Greene County, New York. It was constructed in 1892 and is a single span, dry laid limestone bridge with a round arch. It is seven feet (2.1 m) wide. It spans a tributary of Catskill Creek.
The Colorado Department of Highways is the antecedent of today's Colorado Department of Transportation.
Four historic bridges on the Big Thompson River in Larimer County, Colorado survived its flood of 1976, but since have lost most of their historic integrity. They were built in 1933 and 1937. All four were listed on the National Register of Historic Places in 2002, and two were delisted in 2010.
The Virginia Bridge & Iron Co., also known as Virginia Bridge Company, was a bridge company based in Roanoke, Virginia.
The Plum Bush Creek Bridge, near Last Chance, Colorado, is a concrete rigid frame bridge that is listed on the National Register of Historic Places. It brings US 36 across Plum Bush Creek and is located at milepost 138.16 of US 36. It was designed by Colorado Department of Highways and built by Peter Kiewit Sons Construction Co. in 1938. It was listed on the National Register of Historic Places (NRHP) in 2002.
The Old Trails Bridge is a historic bridge over the Colorado River in San Bernardino County and Mohave County in the United States, that is listed on the National Register of Historic Places (NRHP). It has also been known as Topock Bridge and as Needles Bridge.
The San Luis Bridge, also known as State Bridge or Bridge over Culebra Creek, is a historic open spandrel arch bridge that crosses Culebra Creek in San Luis, Colorado. It was built in 1911 as a road bridge, but now serves pedestrian traffic. It is listed on the National Register of Historic Places.
The New Haven-Weybridge Rattling Bridge is a historic bridge spanning Otter Creek between the Vermont towns of Weybridge and New Haven. It connects Town Highway 7 in New Haven with Town Highway 11 in Weybridge. Built in 1908 by the American Bridge Company, it is a well-preserved example of a rivet-connected lattice truss bridge. It was listed on the National Register of Historic Places as Bridge 26 in 2006.
Otter Creek Bridge is a historic structure located northwest of Oelwein, Iowa, United States. It spans Otter Creek for 86 feet (26 m). In July 1917, the Fayette County Board of Supervisors choose this bridge design for a concrete through girder bridge from the Iowa State Highway Commission, and put the project out to bid. When no one bid on the job they decided to use day laborers to build the bridge. It was completed later in 1917 for $5,153.88. The bridge was listed on the National Register of Historic Places in 1998.
Stoe Creek Bridge was a historic structure located northwest of Oelwein, Iowa, United States. It spanned Stoe Creek for 38 feet (12 m). In June and July 1913, the Fayette County Board of Supervisors awarded contracts for several small bridges in the county. The Iowa State Highway Commission designed this single span bridge that was built by N.M. Stark and Company of Des Moines. It was completed in 1914 for $1,654. The bridge was listed on the National Register of Historic Places in 1998. It was replaced in 2007.
The Hassayampa Bridge is a bridge spanning the Hassayampa River in Hassayampa, Arizona, located in Maricopa County. The bridge was completed in 1929 and was listed on the National Register of Historic Places in 1988. The bridge was scheduled for demolition in 1983.
Manzanola Bridge was a truss bridge which was originally built in 1911 by the Patterson-Burghardt Bridge Company over the Colorado River and later moved over the Arkansas River in the year 1950. The bridge used to connect the town of Manzanola, Otero County, with Crowley County in Colorado.
The Boulder Creek Bridge near Boulder, Colorado is a concrete slab and girder bridge which was built in 1953. It was listed on the National Register of Historic Places in 2003.
The North St. Vrain Creek Bridge, in Lyons, Colorado, was built in 1955. It was listed on the National Register of Historic Places in 2002.
US 36, Last Chance 
