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Division Street Bridge

Mt. Vernon Bridge

   


Division Street Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 26, 2014
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Key Facts

Facility Carried / Feature Intersected
Division Street (WA-536) Over Skagit River
Location
Mt. Vernon: Skagit County, Washington
Structure Type
Metal Rivet-Connected Warren Through Truss, Movable: Swing (Center Bearing Center Pier) and Approach Spans: Metal 8 Panel Rivet-Connected Polygonal Warren Through Truss, Fixed
Construction Date and Builder / Engineer
1954 By Builder/Contractor: Guy F. Atkinson and Engineer/Design: George Stevens

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
160 Feet (48.8 Meters)
Structure Length
75 Feet (205.7 Meters)
Roadway Width
28 Feet (8.5 Meters)
Spans
1 Main Span(s) and 5 Approach Span(s)
NBI Number
0004400A0000000

Historic Significance Rating (HSR)

Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

View Historic Structure Reports For This Bridge

This bridge is a mid-20th Century example of a swing bridge. Nationally and historically, swing bridges were somewhat uncommon to be built during this time, with bascule bridges and even vertical lift bridges generally preferred for their greater operation speed and increased clear span for boats. Design details of features of the swing truss are similar to fixed truss bridges designed by Washington State during this period. Indeed a comparison can be made right on this bridge as there is a fixed through truss approach span on this bridge. There also are concrete curved t-beam approach spans on this bridge.

This bridge no longer opens for boats, and has not operated since 1967. An old, but still active agreement with the Corps of Engineers states that if needed the bridge must be made movable within a year of notice.

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