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Hamma Hamma River Bridge South

Mason County, Washington
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Photos 

South Hamma Hamma Bridge Looking By 270 Degrees

Photo taken by Historic American Engineering Record

View photos at Library of Congress

Map 

View Uglybridges.com report

Facts 

Overview
Rainbow arch bridge over Hamma Hamma River on US 101
Location
Mason County, Washington
Status
Open to traffic
History
Built 1924
Builder
- Colonial Building Co.
Design
Concrete through arch (Contractor)
Dimensions
Length of largest span: 149.9 ft.
Total length: 153.9 ft.
Deck width: 20.0 ft.
Vertical clearance above deck: 16.4 ft.
Also called
South Hamma Hamma River Bridge
Approximate latitude, longitude
+47.54554, -123.04244   (decimal degrees)
47°32'44" N, 123°02'33" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/496806/5265791 (zone/easting/northing)
USGS topographic map
Eldon
Inventory number
BH 34408 (Bridgehunter.com ID)
Inspection (as of 06/2010)
Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 59.2 (out of 100)
Average daily traffic (as of 2010)
2,215

Categories 

Arch (9,440)
Built 1924 (495)
Built during 1920s (7,046)
Colonial Building Co. (4)
Functionally obsolete (7,054)
Mason County, Washington (13)
Navigable waterway (1,453)
 Open (28,454)
Owned by state (9,854)
Rainbow arch (195)
Span length 125-175 feet (2,966)
Total length 125-175 feet (4,156)
US 101 (91)
Washington (849)

Update Log 

  • May 30, 2013: New photos from M. D. Caillet
  • March 19, 2012: Updated by Craig Philpott: Corrected Location
  • March 24, 2011: New photos from Michael Goff
  • October 7, 2008: Updated by Michael Goff: Added Builder

Sources 

  • Mike Goff - michael [dot] goff [at] hotmail [dot] com
  • HAER WA-96 - South Hamma Hamma River Bridge
  • Craig Philpott - cphilpott [at] puc [dot] edu

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