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Pit River Bridge @ Rd 75

Photos 

Pitt River Bridge

West truss

Photo taken by Craig Philpott in August 2010

Enlarge

BH Photo #174272

Map 

Description 

Pratt Pony Truss bridge. Riveted design.

Facts 

Overview
Pony truss bridge over Pit River on CR 75
Location
Modoc County, California
Status
Open to traffic
History
Built 1919; rehabilitated 1968
Design
Riveted Pratt Pony Truss.
Dimensions
Span length: 100.0 ft.
Total length: 100.0 ft.
Deck width: 21.0 ft.
Also called
Road 75 Bridge
Approximate latitude, longitude
+41.48156, -120.64007   (decimal degrees)
41°28'54" N, 120°38'24" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/697028/4594905 (zone/easting/northing)
Quadrangle map:
Rattlesnake Butte
Elevation
4337 ft. above sea level
Inventory numbers
CA 3C-91 (California bridge number)
CA 03C-91 (California bridge number)
BH 11158 (Bridgehunter.com ID)
Inspection (as of 09/2015)
Deck condition rating: Very Good (8 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Good (7 out of 9)
Sufficiency rating: 50.4 (out of 100)
Average daily traffic (as of 2006)
198

Categories 

Built 1919 (462)
Built during 1910s (8,762)
California (2,308)
Corrugated deck (515)
Modoc County, California (4)
Open (36,590)
Owned by county (18,857)
Pony truss (15,054)
Pratt pony truss (3,180)
Pratt truss (8,020)
Riveted (1,875)
Span length 100-125 feet (4,034)
Total length 100-125 feet (4,649)
Truss (29,451)

Update Log 

  • June 11, 2016: Updated by Christopher Finigan: Added category "Riveted"
  • August 25, 2010: Updated by Craig Philpott: refined design and added photos
  • June 22, 2010: Updated by Craig Philpott: corrected location

Sources