1 vote

I-5 - Pit River Bridge


Pit River Bridge

Photo taken by Michael Goff on February 18, 2008


BH Photo #116299

Street View 


Double deck, Warren deck truss bridge with vehicles on deck truss level and railroad on through truss level.


Double deck, deck truss bridge over Shasta Lake (Pit River Arm) on I-5 & Union Pacific Railroad
Shasta County, California
Open to traffic
Built 1941, rehabilitated 2008
- Southern Pacific Railroad (SP)
- Union Pacific Railroad (UP)
Warren deck truss
Length of largest span: 63.0 ft.
Total length: 3,588.1 ft. (0.7 mi.)
Deck width: 70.0 ft.
Also called
UP - Pit River Bridge
Bridge Bay Bridge
Approximate latitude, longitude
+40.76256, -122.31881   (decimal degrees)
40°45'45" N, 122°19'08" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/557494/4512622 (zone/easting/northing)
Quadrangle map:
1084 ft. above sea level
Average daily traffic (as of 2009)
Inventory numbers
CA 6-21 (California bridge number)
CA 06-21 (California bridge number)
BH 11549 (Bridgehunter.com ID)
Inspection report (as of May 2018)
Overall condition: Fair
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 68 (out of 100)
View more at BridgeReports.com

Update Log 

  • August 5, 2021: New photo from Geoff Hubbs
  • August 26, 2017: Updated by Christopher Finigan: Added categories "Cantilevered", "Cantilevered truss"
  • December 25, 2016: Updated by Christopher Finigan: Added category "Riveted"
  • October 26, 2014: Updated by Luke: Added category "Rail-and-Road"
  • July 3, 2011: New photo from Craig Philpott
  • June 6, 2011: Updated by Craig Philpott: corrected spelling
  • November 13, 2010: New photo from Craig Philpott
  • October 31, 2010: New photo from Craig Philpott
  • August 27, 2010: Updated by Craig Philpott: refined details and added photos
  • February 2, 2009: Updated by Michael Goff: fixed crossing controversy
  • July 1, 2008: Updated by Michael Goff



I-5 - Pit River Bridge
Posted December 22, 2019, by Daniel

Came across a couple pictures of bridges over the same river in similar locations that're under the lake. Don't know enough about them to want to create new pages but figured I'd upload pics.

1915 Pit River Bridge LRN 3 Pacific Highway One of the several arched bridges originally constructed on the Pacific Highway, the first Pit River bridge opened in 1915. It was later submerged when the waters of Shasta Lake rose behind the dam. Chester photographed what could have been the arrival of dignitaries for the dedication ceremony. When the bridge was new and traffic was light, dances were held on the smooth concrete deck of the bridge.B 229. Photo from Shasta Historical Society

Pit River Bridge
Posted November 27, 2009, by Joe Gannon (joegannon [at] netzero [dot] com)

How do I contact Mr. Goff and help fill in some of the missing bridge photographs?

"Pitt "River Bridge
Posted August 14, 2009, by Maureen SBS (maureenbs [at] c-zone [dot] net)

The modern spelling of this is the "Pit River". There are some really old maps that give it the extra "t", but this is the current spelling.

Shasta River Bridge
Posted March 14, 2008, by Lugnuts (lugnuts969 [at] sbcglobal [dot] net)

Well, gee, thanks for that most elegant example of constructive criticism. The bridge listings come from a list supplied by the government (which might explain a few things) that sometimes need a little editing. Perhaps you have access to the correct data you could supply?

Shasta River Bridge
Posted March 13, 2008, by Dorris Wood (dwood_2001 [at] excite [dot] com)

The Shasta River does not go through Shasta County at all. The Shasta LAKE bridges were built in the 30's. So were the Shasta River Bridges in SISKIYOU County. et your facts and geography right.