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  • International Database for Civil and Structural Engineering

Seven Mile Bridge

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General Information

Structural Type: Box girder bridge
Function / usage: Road bridge
Construction method: Segmental construction
Other name(s): Keys Bridge
Built: 1979 - 1982

Geographic Information & Related Structures

Location: Marathon, Monroe County, Florida, USA, North America
Key West, Monroe County, Florida, USA, North America
  • Gulf of Mexico
Replaces Knight's Key Bridge (1912)
Moser Channel Bridge (1912)
Pacet Channel Viaduct (1912)
Pigeon Key Bridge (1912)

Technical Information


main span 40 m
total length 10 931 m
number of spans 440
bridge surface 205 000 m2


superstructure precast prestressed concrete
piers precast prestressed concrete

Relevant Web Sites

Relevant Publications

Internal Information
Structure-ID: s0003695
Created: 18/06/2002
Last Updated: 07/10/2013