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Knight's Key Bridge

Knight's Key Bridge.(HAER, FLA,44-KNIKE,1-27)

General Information

Structural Type: Girder bridge
Function / usage: Railroad (railway) bridge
Built: 1908 - 1912
Status: out of service

Geographic Information & Related Structures

Location: Marathon, Monroe County, Florida, USA, North America
Part of:
Replaced by Keys Bridge (1982)

Technical Information


length 2 075 m


superstructure steel



Florida East Coast Railroad goes bankrupt.


Line is damaged in a hurricane and service is abandoned. The State of Florida soon afterwards converts the bridges into highway bridges for US. Route 1.

ca. 1980

The Seven Mile Bridge is closed entirely, some sections are demolished.


(role unknown)

Relevant Web Sites

Relevant Publications

Internal Information
Structure-ID: s0003558
Created: 10/06/2002
Last Updated: 29/07/2014