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Passenger Trains > NJT's RVL River Road Bridge is finally done


Date: 06/29/20 16:20
NJT's RVL River Road Bridge is finally done
Author: Pattenburg

NJT's Train 8527 passes beneath the new River River Road Bridge and is slowing down for its 4:39 stop at North Branch (NJ). The new bridge is 81 feet and 9 inches long with a 30 foot width. Compare that with the old bridge which was 81 feet long but only 14 feet wide. After the train passed, I noticed this object bolted to a tie near the bridge. Any idea as to what its purpose was? Inquiring minds, namely me, would like to know 



Edited 1 time(s). Last edit at 06/29/20 16:20 by Pattenburg.






Date: 06/29/20 16:22
Re: NJT's RVL River Road Bridge is finally done
Author: jatlmv

That is a prism or a "point" for surveyors and thier newest equipment.



Date: 06/29/20 16:23
Re: NJT's RVL River Road Bridge is finally done
Author: 4thDistrict

Pattenburg Wrote:

>After the train
> passed, I noticed this object bolted to a tie near
> the bridge. Any idea as to what its purpose was?
> Inquiring minds, namely me, would like to know 

Looks like a mirror prism used to line things up with a laser surveying device. Similar devices are often used when tunneling under buidlings to measure any sagging of the ground above and movement of buildings caused by earth removal. They are called L-Bar Prisms. 



Edited 5 time(s). Last edit at 06/29/20 16:35 by 4thDistrict.




Date: 06/29/20 16:23
Re: NJT's RVL River Road Bridge is finally done
Author: YoungOldHead

Don't know what that is. My guess would be some type of marker for surveying. Possibly used to measure any shifting of the bridge or roadbed. I've seen similar markers on walls of buildings in earthquake prone areas used for such purpose. 



Date: 06/29/20 18:46
Re: NJT's RVL River Road Bridge is finally done
Author: MEKoch

Looks to me like a signal showing "restricted" speed...........



Date: 06/30/20 06:16
Re: NJT's RVL River Road Bridge is finally done
Author: joemvcnj




Date: 06/30/20 06:47
Re: NJT's RVL River Road Bridge is finally done
Author: Pattenburg

joemvcnj Wrote:
-------------------------------------------------------
> I don't think the road acorss the tracks is open
> yet
>
> https://www.google.com/maps/dir///@40.5898969,-74.
> 6825324,17z/data=!4m2!4m1!3e2!5m1!1e1
Its not and won't be open for a while. The small bridge is at Station Road is also being replaced which accounts for this closure.



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