Seven Mile bridge - wikipedia Seven Mile bridge Seven Mile Bridge Seven Mile Bridge with the original in the foreground 24 ° 41 ′ 54 '' N 81 ° 10 ′ 36 '' W ﻿ / ﻿ 24.6982 ° N 81.1767 ° W ﻿ / 24.6982 ; - 81.1767 Carries 2 lanes of US 1 Crosses Moser Channel Locale Florida Keys, Monroe County, Florida Maintained by Florida Department of Transportation ID number 900101 Characteristics Design precast segmented box girder bridge Total length 10887.5 meters ( 6.765 miles ) Width 11.58 meters ( 38 ft ) Longest span 41.15 meters ( 135 ft ) Clearance below 19.81 meters ( 65 ft ) History Construction cost $45 million Opened May 24, 1982 Location in Florida The Seven Mile Bridge is a famous bridge in the Florida Keys, in Monroe County, Florida, United States. It connects Knight 's Key ( part of the city of Marathon, Florida ) in the Middle Keys to Little Duck Key in the Lower Keys. Among the longest bridges in existence when it was built, it is part of the Overseas Highway in the Keys, which is part of the 2,369 - mile U.S. Route 1. There are two bridges in this location. The modern bridge is open to vehicular traffic ; the older one only to pedestrians and cyclists. The older bridge, originally known as the Knights Key - Pigeon Key - Moser Channel - Pacet Channel Bridge, was constructed from 1909 to 1912 under the direction of Henry Flagler and Clarence S. Coe as part of the Florida East Coast Railway 's Key West Extension, also known as the Overseas Railroad. Contents 1 History 2 Engineering 3 In fiction 4 See also 5 References 6 External links History Entrance plaque After the railroad was damaged by the Labor Day Hurricane of 1935, the line was sold to the United States government, which refurbished Seven Mile Bridge for automobile use. Unsupported sections were added in 1935 to widen it for vehicular traffic. Dismantled trackage was recycled, painted white, and used as guardrails. It had a swing span to allow passage of boats in the Moser Channel of the Intracoastal Waterway, near where the bridge crosses Pigeon Key, a small island that held a work camp for Flagler 's railroad. Hurricane Donna in 1960 caused further damage. The current road bridge was constructed from 1978 to 1982. The vast majority of the original bridge still exists, although the swing span has been removed. The 2.2 - mile section to Pigeon Key, used as a fishing pier and long open to motorized vehicles to give access to the key, was closed to motorized traffic in 2008 after the unsupported sections began to sag. As of 2015, the section remains open to pedestrians and bicyclists. In 2014, Florida Department of Transportation approved a $77 million plan to restore the old bridge. Engineering The new bridge is a box - girder structure built from precast, prestressed concrete sections, comprising 440 spans. Near the center, the bridge rises in an arc to provide 65 - foot ( 20 m ) - high clearance for boat passage. The remainder of the bridge is considerably closer to the water surface. The new bridge does not cross Pigeon Key. The total length of the new bridge is actually 35,862 ft ( 10,931 m ) or 6.79 miles ( 10.93 km ), and is shorter than the original. Each April the bridge is closed for approximately 2.5 hours on a Saturday and a `` fun run, '' known as the Seven Mile Bridge Run, of 1,500 runners is held commemorating the Florida Keys bridge rebuilding project. The event began in 1982 to commemorate the completion of a federally funded bridge building program that replaced spans that oil tycoon Henry Flagler constructed in the early 1900s to serve as a foundation for his Overseas Railroad. The Seven Mile Bridge was engineered by Figg & Muller Engineers ( who also engineered the much taller Sunshine Skyway Bridge ). The structure was completed six months ahead of schedule and has earned eight awards, including an Exceptional Award for Cost Savings Innovation from the Federal Highway Administration. In fiction This article has multiple issues. Please help improve it or discuss these issues on the talk page. ( Learn how and when to remove these template messages ) This section needs expansion. You can help by adding to it. ( November 2016 ) This section does not cite any sources. Please help improve this section by adding citations to reliable sources. Unsourced material may be challenged and removed. ( November 2016 ) The bridge has been featured in the films and television series Licence to Kill, True Lies, The Haunted Mansion, 2 Fast 2 Furious, Mission Impossible III, Burn Notice, I Am Number Four and Leverage. See also Bridges portal Florida portal References Jump up ^ Wilkinson, Jerry. `` HISTORY of the OVERSEAS HIGHWAY ''. KEYS HISTOREUM. Historical Preservation Society of the Upper Keys. Retrieved 1 June 2016. Jump up ^ Toppino, Nancy ( 2008 - 11 - 18 ). Florida Keys and Key West. Globe Pequot Press. p. 271. ISBN 9780762748716. Retrieved 2015 - 01 - 17. Jump up ^ Gross, Bonnie. `` Florida Keys : The Old Seven Mile Bridge in Marathon ''. floridarambler.com. Retrieved 2015 - 01 - 17. Jump up ^ Elaine, Glusac ( 2014 - 04 - 03 ). `` In the Keys, New Plans for an Old Bridge ''. New York Times. Retrieved 2015 - 01 - 17. Jump up ^ `` Seven Mile Bridge ''. Structurae. External links Route map : Google KML file ( edit help ) Display on Google Maps Template : Attached KML / Seven Mile Bridge KML is from Wikidata Wikimedia Commons has media related to Seven Mile Bridge. Friends of Old Seven website FIGG Seven Mile Bridge Knight 's Key Bridge ( 1912 ) at Structurae Pigeon Key Bridge ( 1912 ) at Structurae Moser Channel Bridge ( 1912 ) at Structurae Pacet Channel Viaduct ( 1912 ) at Structurae Seven Mile Bridge ( 1982 ) at Structurae Historic American Engineering Record ( HAER ) No. FL - 2, `` Seven Mile Bridge, Linking Florida Keys, Knight Key, Monroe County, FL '' Florida Keys Biscayne National Park Soldier Ragged Boca Chita Sands Elliott Adams Caesar 's Rock Meig 's Rubicon Reid Porgy Totten Old Rhodes Islandia Upper keys Key Largo Island CDP North Tavernier Plantation Island former CDP Windley Upper Matecumbe Tea Table Indian Lignumvitae Lower Matecumbe Islamorada Middle keys Craig Fiesta Long Layton Conch Little Duck Key Island CDP Grassy Crawl Little Long Point Fat Deer Vaca Marathon Key Colony Beach Boot Knights Lower keys Pigeon Money Little Duck Missouri Ohio Sunshine Bahia Honda Spanish Harbor Scout ( West Summerland ) No Name Big Pine Torch Little Middle Big Ramrod Summerland Knockemdown Cudjoe Sugarloaf Park Lower Sugarloaf Saddlebunch Shark Geiger Big Coppitt Island CDP East Rockland Rockland Boca Chica Raccoon Stock Island Island CDP Key West Island City Sigsbee Fleming Sunset Wisteria Outlying islands Mule Keys Mule Crawfish Archer Joe Ingram Big Mullet Barracouta Cottrell Man Little Mullet Ballast Woman Boca Grande Marquesas Keys Dry Tortugas Loggerhead Key Tortugas Banks ( submerged ) Areas Florida Bay Dry Tortugas National Park Florida Keys National Marine Sanctuary National Key Deer Refuge John Pennekamp Coral Reef State Park Biscayne Bay Biscayne National Park Key West National Wildlife Refuge Great White Heron National Wildlife Refuge Crocodile Lake National Wildlife Refuge Florida Reef Other topics Monroe County Conch Republic Overseas Highway Overseas Railroad Card Sound Bridge Jewfish Creek Bridge Seven Mile Bridge Bahia Honda Rail Bridge Fort Jefferson Theater of the Sea 1935 Labor Day hurricane Hurricane Wilma Hurricane Irma Key Deer Key lime pie Florida Keys Keynoter Key West Citizen Notable bridges and tunnels in Florida Panhandle Escambia Bay Garcon Point John Gorrie Mid-Bay Pensacola Bay St. George Island Trammell Victory North Acosta Bridge of Lions Main Street Buckman Dames Point Fuller Warren Hart Mathews Memorial Strauss Trunnion Thomas B. 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Kinney Port of Miami Ferries Drayton Island Fort Gates Mayport -- Covered bridge -- Swing bridge See also : List of bridges in Florida Retrieved from `` https://en.wikipedia.org/w/index.php?title=Seven_Mile_Bridge&oldid=804382261 '' Categories : Bridges completed in 1912 Bridges completed in 1982 Bridges in Monroe County, Florida Florida East Coast Railway Landmarks in Florida Railroad bridges in Florida Tourist attractions in the Florida Keys Road bridges in Florida U.S. Route 1 Bridges on the United States Numbered Highways Marathon, Florida Historic American Engineering Record in Florida 1912 establishments in Florida Concrete bridges in the United States Box girder bridges in the United States Hidden categories : Articles containing potentially dated statements from 2015 All articles containing potentially dated statements Articles to be expanded from November 2016 All articles to be expanded Articles using small message boxes Articles needing additional references from November 2016 All articles needing additional references Articles with multiple maintenance issues Articles using KML from Wikidata Structurae ID different from Wikidata Talk Contents About Wikipedia Čeština Deutsch Esperanto Français Italiano Nederlands 日本 語 Norsk Polski 中文 Edit links This page was last edited on 8 October 2017, at 17 : 00. 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Question: how long did it take to build the 7 mile bridge in the keys
Answer: from 1978 to 1982