Historic Bridges of the U.S. | North Umpqua River I-5 Bridge

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North Umpqua River Bridges

from southwest, notice the Winchester Arch Bridge in the background

Photo taken by Michael Goff on March 16, 2009

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North Umpqua River Bridge

from Winchester Bridge

Photo taken by Michael Goff on March 18, 2008

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North Umpqua River Bridges

Photo taken by Michael Goff on March 16, 2009

Vicinity map

Map links:

Overview: Pair of deck truss bridges over North Umpqua River on I-5 in Roseburg North
Location: Douglas County, Oregon
Status: Open to traffic
History: Northbound bridge built 1955; southbound built 1964
Builders: - Ivan D. Merchant (1964 - Bridge Engineer)
- P. Mervyn Stephenson (1955 - Bridge Engineer)
Design: Deck truss
Dimensions: Length of largest span: 140.1 ft.
Total length: 1,643.1 ft.
Deck width: 29.9 ft.
Recognition: Eligible for the National Register of Historic Places
Approximate latitude, longitude: +43.28222, -123.35556 (decimal degrees)
43°16'56" N, 123°21'20" W (degrees°minutes'seconds")
Approximate UTM coordinates: 10/471152/4792217 (zone/easting/northing)
USGS topographic map: Winchester
Inventory number: BH 29956 (Bridgehunter.com ID)
Inspection (as of 08/2007): Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 9.0 (out of 100)
Average daily traffic (as of 2006): 17,250