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Dyson Lane Bridge

Photos 

Dyson Lane Bridge

Looking West

Photo taken by Craig Philpott in August 2010

Enlarge

BH Photo #174016

Map 

Description 

Single lane Pratt through truss main span with half-hip Pratt pony truss approach spans.

Facts 

Overview
Through truss bridge over Middle Fork Feather River on Dyson Lane
Location
Plumas County, California
Status
Open to traffic
Future prospects
To be repainted.
History
Built 1908
Builder
- Canton Bridge Co. of Canton, Ohio
Design
From east to west:
-Two pin-connected, 4-panel half-hip Pratt pony truss spans
-One pin-connected, 6-panel Pratt through truss span
-One pin-connected, 4-panel half-hip Pratt pony truss span
Dimensions
Length of largest span: 100.0 ft.
Total length: 285.0 ft.
Deck width: 12.0 ft.
Vertical clearance above deck: 14.8 ft.
Recognition
Eligible for the National Register of Historic Places
Also called
Marble Hot Springs Road Bridge
Marble Lane Bridge
Approximate latitude, longitude
+39.76278, -120.33647   (decimal degrees)
39°45'46" N, 120°20'11" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/728158/4404821 (zone/easting/northing)
Quadrangle map:
Reconnaissance Peak
Elevation
4874 ft. above sea level
Average daily traffic (as of 2016)
40
Inventory numbers
CA 9C-1 (California bridge number)
CA 09C-1 (California bridge number)
BH 11263 (Bridgehunter.com ID)
Inspection report (as of October 2017)
Overall condition: Fair
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 25.5 (out of 100)
View more at BridgeReports.com

Update Log 

  • June 6, 2019: Updated by Erik Hoffman: Added category "Lally columns"
  • June 11, 2016: Updated by Christopher Finigan: Added category "Pin-connected"
  • May 21, 2013: Updated by Nathan Holth: Bridge to be repainted.
  • August 24, 2010: Updated by Craig Philpott: refined design and added photos

Sources 

Comments 

Dyson Lane Bridge
Posted April 20, 2017, by 1122334455 (edh4801 [dot] 27 [at] gmail [dot] com)

Bridge is currently underwater.

Dyson Lane Bridge
Posted October 25, 2015, by Erik Hoffman

Road is also called Marble Hot Springs Rd.