Likely of interest to some here, multiple makers marks have been found on the varying Rods on the Bridgeport.
With no established Ironworks in Califorinia at this point and war raging in the east and so it's Ironworks necessarily in high demand the choice seems to been to look to distant shores to fill the need.
Photos at 3:05 > https://youtu.be/dKbulEy4EKQ
The needle is threaded! The Bailey Bridge which will serve as shoring to relax Bridgeport's Trusses to allow repair and replacement of compromised sections of timber during the rehab process has been emplaced >
https://www.dropbox.com/sh/omkach0ga75mrow/AADD5U_-qZtf9_QJZ...
Still closed, apparently still drawing a crowd anyway:
http://www.appeal-democrat.com/news/bridge-still-draws-a-cro...
Though sadly the Portals are gated through this weekends Sesquicentennial celebration, plans for a rehabilitation were announced yesterday - http://t.co/C8kQA78y
A very thorough piece on the bridges history was also recently published - http://t.co/f20LYQV5
As an aside - I'm not sure it is accurate to describe this bridge as a "Howe with auxiliary arches" To my mind auxilliary evokes arches of the lam variety, added to a through truss to increase capcity. These arches are original to the bridges construction. Though these are an applied variant, and not an encased arch, Arches were a feature Howe included in his '46 patent -
http://www.google.com/patents?id=qhVDAAAAEBAJ&pg=PA1&dq=4726...
Historic, One-Of-A-Kind Bridge Reopens In Nevada County: ‘There Is Not Another One’
https://sacramento.cbslocal.com/2021/11/22/historic-bridge-r...