Rating:
1 vote

Bacon Island Road South Bridge

Photos 

Bacon Island South Bridge

Looking NE

Photo taken by Craig Philpott in March 2010

Enlarge

BH Photo #157995

Map 

Street Views 

Facts 

Overview
Pratt through truss bridge over Middle River on S Bacon Island Road
Location
San Joaquin County, California
Status
Open to traffic
History
Built 1905
Builders
- Clark & Henery of Stockton, California
- F. E. Quail (County Surveyor)
Design
Pratt through truss swing bridge
Dimensions
Length of largest span: 204.0 ft.
Total length: 326.0 ft.
Deck width: 18.0 ft.
Approximate latitude, longitude
+38.00478, -121.53175   (decimal degrees)
38°00'17" N, 121°31'54" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/628903/4207362 (zone/easting/northing)
Quadrangle map:
Bouldin Island
Elevation
9 ft. above sea level
Inventory number
BH 44434 (Bridgehunter.com ID)

Update Log 

  • May 5, 2018: New Street View added by Leslie R trick
  • June 11, 2016: Updated by Christopher Finigan: Added category "Pin-connected"
  • December 11, 2015: New Street View added by Douglas Butler
  • March 13, 2010: Added by Craig Philpott

Sources 

  • Craig Philpott - craigphilpott63 [at] gmail [dot] com
  • Douglas Butler
  • Leslie R Trick - Leslie [dot] Trick [at] gmail [dot] com

Comments 

Bacon Island Road South Bridge
Posted January 2, 2019, by Mike Goff (michael [dot] goff [at] hotmail [dot] com)

Knowing it can opened adds to my belief that the distortions in the verticals may be the result of the span locking mechanism.

We have similar but not visible span deflections on the Umpqua River Bridge in Reedsport, Oregon.

http://bridgehunter.com/or/douglas/umpqua-river/

Bacon Island Road South Bridge
Posted January 2, 2019, by Daniel

https://www.law.cornell.edu/cfr/text/33/117.150 and unless that law is old, it's required to work

Bacon Island Road South Bridge
Posted January 2, 2019, by Daniel

https://marinas.com/view/bridge/nyuqv_Connection_Sough_Swing... I don't know if that's about the right place given the description of locations, but it claims to be open and the coordinates match.

I suppose it's possible that there's that much sag when it's opened, hadn't thought of that.

Bacon Island Road South Bridge
Posted January 2, 2019, by Mike Goff (michael [dot] goff [at] hotmail [dot] com)

Does anyone know if this is an active draw bridge?

The bend in the vertical tension bars could be from a jacking/span lock system at the ends of the swing span.

Some of these old swing spans will deflect when they are opened with the free hanging ends dipping downward. When the span is closed a jack/lock will lift them back into place. This lifting could cause some odd compressive forces in the thin tension bar causing it to bend when the bridge is in the closed position.

Just a theory, from seeing other swing bridges.

Bacon Island Road South Bridge
Posted December 31, 2018, by Daniel

I'm wondering how the tension members ended up bent