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Alanson Swing Bridge

Photo 

Alanson Swing Bridge

In operation

Photo taken by Douglas Butler in November 2014

Enlarge

BH Photo #364754

Map 

Description 

Described as the "world's shortest swing bridge"

Facts 

Overview
Steel stringer bridge over Crooked River on River Street
Location
Alanson, Emmet County, Michigan
Status
Open to traffic
History
Built 1986 as a replica for a 1902 swing bridge
Design
Steel stringer swing
Dimensions
Length of largest span: 29.9 ft.
Total length: 64.0 ft.
Deck width: 19.0 ft.
Approximate latitude, longitude
+45.44000, -84.78569   (decimal degrees)
45°26'24" N, 84°47'08" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/673179/5034215 (zone/easting/northing)
Quadrangle map:
Alanson
Inventory numbers
MINEW 02460 (Michigan bridge number on the National Bridge Inventory 2011 and later)
BH 56769 (Bridgehunter.com ID)
Inspection (as of 10/2014)
Deck condition rating: Very Good (8 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Very Good (8 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 80.6 (out of 100)
Average daily traffic (as of 1986)
310

Categories 

Alanson, Michigan (1)
Beam (11,961)
Built 1986 (52)
Built during 1980s (524)
Emmet County, Michigan (4)
Functionally obsolete (7,992)
Michigan (880)
Modern (1,668)
Movable (2,705)
Navigable waterway (1,998)
Open (36,588)
Owned by city (4,491)
Span length 25-50 feet (13,583)
Steel stringer (4,691)
Swing (1,248)
Total length 50-75 feet (8,437)

Update Log 

  • June 24, 2013: Added by James Baughn

Sources