Author Topic: How would you use electronics to solve the 11' 8" bridge problem  (Read 13059 times)

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Offline floobydust

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Re: How would you use electronics to solve the 11' 8" bridge problem
« Reply #250 on: November 28, 2019, 10:47:50 pm »
I figured 8" was not enough. The road is bowl-shaped. It cannot be lowered due to sewer pipes.
"The standard clearance, since 1973, has a minimum height of 14 feet (4.3 m), which is 2 feet 4 inches (0.71 m) higher than the bridge as built.[1]"
"In October 2019, the North Carolina Railroad Company, which owns the bridge and tracks, raised the bridge by 8 inches (0.20 m) to 12 feet 4 inches (3.76 m) to reduce collisions."

The blinking sign is proven useless, some crashes it's not even on. The driver's attention is elsewhere.

In my locale, we use a plastic pipe bar with hanging metal chains, at the same height as the bridge clearance.  This hits the roof of the truck well before he's in the bridge. The loud noise makes the driver stop.
 

Offline Gyro

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Re: How would you use electronics to solve the 11' 8" bridge problem
« Reply #251 on: November 28, 2019, 10:54:15 pm »
Nah, go for heavy steel rollers to 'pre-form' marginal vehicles for an easier fit!  ;)
Chris

"Victor Meldrew, the Crimson Avenger!"
 
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Offline Nusa

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Re: How would you use electronics to solve the 11' 8" bridge problem
« Reply #252 on: November 28, 2019, 11:39:55 pm »
"The standard clearance, since 1973, has a minimum height of 14 feet (4.3 m), which is 2 feet 4 inches (0.71 m) higher than the bridge as built.[1]"

Said standards were established 35 years after the bridge was built. It's grandfathered, like thousands of other constructions that nobody is willing to pay to upgrade (there's still an 11'4" bridge in the same city!). In any case, so far as the railroad is concerned, it works perfectly now that they've put up a crash beam to protect the bridge itself from damage. They even leveled the grade, gaining another 8 inches. Anything more is on the city at this point.

And the city has several solutions:
a) close the road to non-pedestrian traffic.
b) move the sewer pipes to be under the existing sidewalks on both sides and lower the road under the bridge.
c) ban tall trucks at least a block from the bridge on 3 streets, rather than trying to make them turn at the last moment.
d) live with it

It all comes down to money. Railroad isn't going to pay for it. City isn't going to pay for it, at least not until the sewer pipes (also grandfathered) require replacement.
 
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Offline Red Squirrel

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Re: How would you use electronics to solve the 11' 8" bridge problem
« Reply #253 on: November 29, 2019, 03:04:59 am »
Well that didn't take long lol.  ALMOST made it.  it seems they are really trying everything they can though, the warning signs, raising it a bit etc.  It would probably be too involved to put it way higher as it means bigger changes to the railway too which means the train can't go through during the construction.  And we all know what a couple days of no train can do with the recent CN strike.  It's actually scary when you think about it how everything in society seems to always running at full capacity so any little disruptions throws everything off. 
 
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