Rating:
2 votes

Blue Lake Bridge

Photos 

Korbel Bridge

Photo taken by Walt Frazer in June 2008

BH Photo #121851

Map 

Street Views 

Facts 

Overview
Rainbow arch bridge over North Fork Mad River on Maple Creek Road
Location
Humboldt County, California
Status
Open to traffic
History
Built 1928
Builders
- F. E. Kelly (Engineer)
- F. J. Maurer & Son (Contractor)
- F. L. Grimm (Engineer)
Design
Concrete through arch
Dimensions
Length of largest span: 144.0 ft.
Total length: 429.2 ft.
Deck width: 18.7 ft.
Vertical clearance above deck: 13.5 ft.
Recognition
Eligible for the National Register of Historic Places
Also called
Maple Creek Road Bridge
North Fork of Mad River Bridge
Approximate latitude, longitude
+40.87028, -123.96132   (decimal degrees)
40°52'13" N, 123°57'41" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/418992/4524801 (zone/easting/northing)
Quadrangle map:
Korbel
Inventory numbers
CA 4C-26 (California bridge number)
BH 10912 (Bridgehunter.com ID)
Inspection (as of 11/2015)
Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Poor (4 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 41.4 (out of 100)
Average daily traffic (as of 2011)
624

Update Log 

  • April 10, 2013: New Street View added by Mike Goff
  • October 3, 2010: Updated by Craig Philpott: Added photos and engineer data

Sources 

  • Craig Philpott - craigphilpott63 [at] gmail [dot] com
  • Mike Goff - michael [dot] goff [at] hotmail [dot] com