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Rockfield Bridge

San Bernardino County, California
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Photos 

Rockfield Bridge, Victorville

Looking SW

Photo taken by Craig Philpott in April 2010

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Map 

Street View 

View Uglybridges.com report

Facts 

Overview
Baltimore through truss bridge over Mojave River on Nat Trails Hwy
Location
Victorville, San Bernardino County, California
Status
Open to traffic
History
Built 1930
Design
Baltimore through truss
Dimensions
Length of largest span: 270.0 ft.
Total length: 575.2 ft.
Deck width: 34.1 ft.
Recognition
Eligible for the National Register of Historic Places
Also called
Route 66 Bridge
Oro Grande Bridge
Approximate latitude, longitude
+34.57395, -117.32268   (decimal degrees)
34°34'26" N, 117°19'22" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/470402/3825844 (zone/easting/northing)
USGS topographic map
Victorville
Inventory number
BH 44834 (Bridgehunter.com ID)
Inspection (as of 01/2012)
Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 64.9 (out of 100)
Average daily traffic (as of 2004)
7,040

Categories 

Baltimore through truss (149)
Baltimore truss (163)
Beam (6,053)
Built 1930 (1,238)
Built during 1930s (8,551)
California (1,622)
Concrete stringer (271)
Have street view (9,906)
NR-eligible (3,751)
 Open (28,318)
Owned by state (9,810)
San Bernardino County, California (120)
Span length 250-500 feet (863)
Through truss (9,211)
Total length 500-1000 feet (1,805)
Truss (23,575)
Victorville, California (3)

Update Log 

  • January 31, 2013: New photos from Jann Mayer
  • August 3, 2012: New photo from David Backlin
  • April 24, 2010: Updated by Craig Philpott: refined design description
  • April 22, 2010: New photos from Craig Philpott
  • April 11, 2010: Updated by Craig Philpott: refined design, added street view, more design assistance needed

Sources 

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Comments 

Rockfield Bridge
Posted April 22, 2010, by Nathan Holth (form3 [at] historicbridges [dot] org)

Over on HistoricBridges.org, I call these modified Warrens because while they appear similar to Baltimore truss bridges, they use Warren config for the primary diagonals as opposed to the Pratt. A Baltimore is by definition a variation of a Pratt.

I don't know what the general consensus is here on BridgeHunter for this type. There was a discussion about weird truss types a while back:

http://www.bridgehunter.com/story/1109/

Rockfield Bridge, design description needed
Posted April 22, 2010, by Craig Philpott (cphilpott [at] puc [dot] edu)

This through truss in San Bernardino county is an unusual design, to me, and it needs a better design description. All assistance and education appreciated.