The Florida Keys are a coral cay archipelago off the southern coast of Florida, forming the southernmost part of the continental United States. They begin at the southeastern coast of the Florida peninsula, about 15 miles (24 km) south of Miami, and extend in a gentle arc south-southwest and then westward to Key West, the westernmost of the inhabited islands, and on to the uninhabited Dry Tortugas. The islands lie along the Florida Straits, dividing the Atlantic Ocean to the east from the Gulf of Mexico to the northwest, and defining one edge of Florida Bay. At the nearest point, the southern part of Key West is just 93 miles (150 km) from Cuba. The Keys are between about 24.3 and 25.5 degrees North latitude.
A swing bridge is a movable bridge that has as its primary structural support a vertical locating pin and support ring, usually at or near to its center of gravity, about which the swing span can then pivot horizontally as shown in the animated illustration to the right. Small swing bridges as found over canals may be pivoted only at one end, opening as would a gate, but require substantial underground structure to support the pivot.
The 14th Street bridges refers to the three bridges near each other that cross the Potomac River, connecting Arlington, Virginia and Washington, D.C. Sometimes the two nearby rail bridges are included as part of the 14th Street bridge complex. A major gateway for automotive, bicycle and rail traffic, the bridge complex is named for 14th Street, which feeds automotive traffic into it on the D.C. end.
The Florida East Coast Railway is a Class II railroad operating in the U.S. state of Florida, currently owned by Grupo México.
The Overseas Highway is a 113-mile (181.9 km) highway carrying U.S. Route 1 (US 1) through the Florida Keys to Key West. Large parts of it were built on the former right-of-way of the Overseas Railroad, the Key West Extension of the Florida East Coast Railway. Completed in 1912, the Overseas Railroad was heavily damaged and partially destroyed in the 1935 Labor Day hurricane. The Florida East Coast Railway was financially unable to rebuild the destroyed sections, so the roadbed and remaining bridges were sold to the state of Florida for $640,000.
Interstate 235 (I-235) in Iowa is an auxiliary Interstate Highway that runs just north of downtown Des Moines through the heart of the Des Moines metropolitan area. I-235 runs from the junction of I-35 and I-80 in West Des Moines to the separation of the same two Interstates in Ankeny. The highway is approximately 14 miles (23 km) long.
The Overseas Railroad was an extension of the Florida East Coast Railway to Key West, a city located 128 miles (206 km) beyond the end of the Florida peninsula. Work on the line started in 1905 and it operated from 1912 to 1935, when it was partially destroyed by the Labor Day Hurricane. Some of the remaining infrastructure was used for the Overseas Highway.
Card Sound Bridge is a high-rise toll causeway connecting southern Miami-Dade County and northern Monroe County. It is one of only two ways that motorists can leave or enter the Florida Keys. The toll for two-axle automobiles is USD $1.50 if paid via SunPass. The prior toll plaza was demolished during hurricane Matthew and has been replaced with a toll-by-plate plaza. The toll fee will be charged by plate automatically and sent via the mail to the address on the vehicle registration. The cashless all-electronic tolling system replaced the previous staffed toll booth on October 20, 2018. The toll fee is waived upon evacuating the Keys for hurricanes or in instances in which US 1 is impassable.
The Pigeon Key Historic District is a U.S. historic district located on Pigeon Key in Florida. The district is off U.S. 1 at mile marker 45. It contains 11 historic buildings and 3 structures. Although the old Seven Mile Bridge crosses over the island, at approximately mile marker 45, west of Knight's Key, and just east of Moser Channel, which is the deepest section of the seven-mile span, it and its exit ramp to the island were closed in 2008 and not reopened until 2022. While the bridge was closed, access was by ferry or private watercraft only, but in 2014 FDOT approved a $77 million plan to restore it. The old bridge was restored and reopened in 2022.
The Tower Bridge is a vertical lift bridge across the Sacramento River, linking West Sacramento in Yolo County to the west, with the capital of California, Sacramento, in Sacramento County to the east. It has also been known as M Street Bridge. It was previously a part of U.S. Route 40 until that highway was truncated to east of Salt Lake City as well as US Route 99W, which served the western portion of the Sacramento Valley from Sacramento to Red Bluff. The bridge is maintained by the California Department of Transportation as part of State Route 275 and connects West Capitol Avenue and Tower Bridge Gateway in West Sacramento with the Capitol Mall in Sacramento.
Bahia Honda is an island in the lower Florida Keys.
Little Duck Key is a small island in the lower Florida Keys.
State Road 912 (SR 912), known along its entire length as Cline Avenue, is a freeway north of the combined Interstate 80/I-94/U.S. Route 6, and a local access road serving Griffith south of the Borman. The portion of Cline Avenue marked as SR 912 is 11.69 miles (18.81 km) long.
The Bahia Honda Rail Bridge is a derelict railroad bridge in the lower Florida Keys connecting Bahia Honda Key with Spanish Harbor Key. It was originally part of the Overseas Railway, but the state of Florida purchased it from the Florida East Coast Railway (FEC) after the 1935 Labor Day Hurricane and converted it for automobile use as part of the Overseas Highway in 1938. After a replacement Bahia Honda Bridge was opened in 1972, two spans of the old bridge were removed for the safety of boat traffic and to prevent pedestrian access to unsafe parts of the bridge.
Pigeon Key is a small island containing the historic district of Pigeon Key, Florida. The 5-acre (2.0-hectare) island is home to 8 buildings on the National Register of Historic Places, some of which remain from its earliest incarnation as a work camp for the Florida East Coast Railway. Today these buildings serve a variety of purposes, ranging from housing for educational groups to administrative offices for the non-profit Pigeon Key Foundation. The former Assistant Bridge Tender's House has been converted into a small museum featuring artifacts and images from Pigeon Key's colorful past. It is located off the old Seven Mile Bridge, at approximately mile marker 45, west of Knight's Key, and just east of Moser Channel, which is the deepest section of the 7-mile (11 km) span.
The Florida Keys Overseas Heritage Trail is a 106-mile (171 km) paved rail trail—a multi-use bicycle and pedestrian facility—being constructed between Key Largo and Key West in the Florida Keys. As of January 2022, 90 mi (140 km) of the trail has been constructed.
The Jewfish Creek Bridge is a beam bridge in the Florida Keys. Spanning both Jewfish Creek and Lake Surprise, it carries the Overseas Highway between the Florida Keys and the Florida mainland. The bridge is 65 feet (20 m) tall and opened in 2008, replacing a small drawbridge.
The Long Key Bridge, officially known as the Dante B. Fascell Bridge, is a bridge in the Florida Keys connecting Long Key and Conch Key, roughly halfway between Miami and Key West. At a length of nearly two and a half miles, it is the second longest bridge on the Overseas Highway after the Seven Mile Bridge. The current bridge opened in 1982, replacing the parallel Long Key Viaduct, which carried the Overseas Railroad from 1907 to 1935 and was repurposed for highway use shortly after.
Clarence Stanley Coe was an American master bridge builder and railroad civil engineer, who supervised the planning and building of the Florida East Coast Railway's Seven Mile Bridge, linking the Florida Keys to Marathon, Monroe County, which, when completed in January 1912, was acclaimed as the longest bridge in the world and an engineering marvel. Later, Coe was appointed the first city manager of Miami, Florida, and after that was appointed chief engineer of Duval County, Florida.
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