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North Fork East River Bridge


North end

Photo taken by Kyle Jarvis in August 2018


BH Photo #432809



May have been relocated here in 1939, but bridge is likely much older than that.


Pratt through truss bridge over North Fork East River on East River Loop
Bonner County, Idaho
Open to traffic
Built 1939
6-panel, pinned Pratt through truss
Length of largest span: 120.1 ft.
Total length: 122.1 ft.
Deck width: 15.4 ft.
Vertical clearance above deck: 12.3 ft.
Approximate latitude, longitude
+48.36842, -116.83010   (decimal degrees)
48°22'06" N, 116°49'48" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/512583/5357263 (zone/easting/northing)
Quadrangle map:
Prater Mountain
Average daily traffic (as of 2016)
Inventory numbers
ID 30120 (Idaho bridge number)
BH 14837 (Bridgehunter.com ID)
Inspection report (as of August 2018)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Serious (3 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 25 (out of 100)
View more at BridgeReports.com


Bonner County, Idaho (26)
Built 1939 (775)
Built during 1930s (11,800)
Idaho (523)
One-lane traffic (7,618)
Open (40,040)
Owned by county (20,941)
Pratt through truss (5,457)
Pratt truss (9,394)
Skewed (4,919)
Span length 100-125 feet (4,412)
Through truss (15,279)
Total length 100-125 feet (5,195)
Truss (33,131)
Wooden deck (6,086)

Update Log 

  • April 26, 2021: Updated by Tony Dillon: Added truss type
  • August 7, 2018: New photos from Kyle Jarvis



North Fork East River Bridge
Posted August 7, 2018, by Kyle Jarvis (kylejamesjarvis [at] mail [dot] com)

I doubt the 1939 build date for this bridge. There are no dates on the bridge, and 1939 would mean that this bridge was built after the Upper West Branch bridge on highway 57, which is a much more modern design. The style of this bridge, along with it's low 12"1' clearance and very light weight rating, combined with the 1925 date for the construction of the Dickensheet Bridge up stream, both of which are part of the old road from Priest River, ID to Coolin on Priest Lake, would lead me to think this bridge was built probably in the mid 1920's.