Facts
- Overview
- Rainbow arch bridge over Hamma Hamma River on US 101
- Location
- Mason County, Washington
- Status
- Open to traffic
- History
- Built 1924
- Design
- Concrete through arch
- Dimensions
-
Length of largest span: 149.9 ft.
Total length: 153.9 ft.
Deck width: 20.0 ft.
Vertical clearance above deck: 16.2 ft.
- Approximate latitude, longitude
- +47.54833, -123.04333 (decimal degrees)
47°32'54" N, 123°02'36" W (degrees°minutes'seconds") - Inventory number
- BH 34407 (Bridgehunter.com ID)
- Inspection (as of 10/2004)
- Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 44.5 (out of 100) - Average daily traffic (as of 2002)
- 1,813