4 votes

Happy Valley Cutoff Bridge


Happy Valley Rd

Looking SW at East face of span.

Photo taken by Craig Philpott in June 2013


BH Photo #255487


Deck truss bridge over Camp Creek on Happy Valley Cutoff Road
El Dorado County, California
Open to traffic
Built in 1897
7-panel, pin-connected Pratt deck truss with wooden deck.
Length of largest span: 107.9 ft.
Total length: 179.1 ft.
Deck width: 14.1 ft.
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+38.65795, -120.66255   (decimal degrees)
38°39'29" N, 120°39'45" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/703387/4281412 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2010)
Inventory numbers
CA 25C-25 (California bridge number)
BH 10867 (Bridgehunter.com ID)
Inspection report (as of July 2017)
Overall condition: Fair
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 26.6 (out of 100)
View more at BridgeReports.com


19th Century (9,202)
Built 1897 (302)
Built during 1890s (3,317)
California (2,753)
Deck truss (1,994)
El Dorado County, California (83)
NR-eligible (4,125)
One-lane traffic (8,044)
Open (41,248)
Owned by county (21,801)
Pin-connected (5,194)
Pratt deck truss (420)
Pratt truss (10,625)
Span length 100-125 feet (4,637)
Total length 175-250 feet (4,623)
Truss (37,205)
Wooden deck (6,225)

Update Log 

  • June 4, 2013: New photos from Craig Philpott



Happy Valley Cutoff Bridge
Posted August 17, 2019, by Don Morrison

Hmmm... that picture got me thinking (not usually a good thing 8^).

Interesting that this appears to be a classic upright pratt truss with floor beams at the top chord, even on the hip joints.

I usually think of a pratt deck truss as an inverted (ie - bottom chord shorter) pratt design, or maybe having vertical ends. Perhaps additional vertical structure at the end has obscured the "prattness" of some to me.

A look thru the bridges in the "pratt deck truss" category shows some more examples and a few that seem not to be.

Maybe a bit of confusion by the person who created a given bridge page or my own confusion, but I would call this a warren with alternating verticals (verticals on the ends as well):


This one has that "prattness" with vertical ends and is shown as such under design, but the overview says Warren. I don't see Warren in it.


One of my favorites since the mid 1980s has a pratt deck truss span, even if obscured somewhat by being subdivided and having vertical ends. It's all in the slope direction of the diagonals:


Happy Valley Cutoff Bridge
Posted August 16, 2019, by Cris Alarcon (cris [at] inedc [dot] com)

Opening dedication 1897

Happy Valley Road Bridge
Posted May 21, 2013, by Nathan Holth (form3 [at] historicbridges [dot] org)

This blog shows this as a pin connected deck truss. http://www.bphod.com/2013/03/el-dorado-county-california-bri... Obviously older than 1930.