Rating:
3 votes

Mount Si Road Bridge

Photos 

Removing the deck of the old bridge

Photo Courtesy of King County Department of Transportation

View this photo at your.kingcounty.gov

BH Photo #132896

Map 

Facts 

Overview
Through truss bridge over Middle Fork Snoqualmie River on Mount Si Road in Tanner
Location
King County, Washington
Status
Replaced by a NEW THROUGH TRUSS bridge in 2008
History
Built 1904; rehabilitated 1955, Replaced 2008-09
Design
Pin-connected, 9-panel Parker through truss
Dimensions
Length of largest span: 171.9 ft.
Total length: 290.0 ft.
Deck width: 19.0 ft.
Vertical clearance above deck: 14.0 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+47.48667, -121.76000   (decimal degrees)
47°29'12" N, 121°45'36" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/593411/5259993 (zone/easting/northing)
Quadrangle map:
North Bend
Inventory number
BH 34307 (Bridgehunter.com ID)

Update Log 

  • February 3, 2009: New photo from Michael Goff

Sources