Dude, there are some kick ass roads out by Cat Spring

That's a beautiful bridge. The DOT signs don't do it any favors, but still very nice.

Over the past 2 nights, they've installed 2 more of the big jacks, either side of the pedestal support in the median. So now all of the required jacks are (I think) in place. I guess tonight will be prep, and then tomorrow night will be the big event or at least, the beginning of it. I'm going to be watching when I drive under in on both sides on Fri!

Very cool! That's what I'm most curious about, how much they're going to lift this bridge.
LMAO! 11'8" bridge is awesome, and the guy that installed the webcam should be given a medal or knighted or something.
The only way that could have been better was if it had been "Ozzyman". It would have been the ideal compilation for one of his "Destination FSCKed" videos.
Wow! Ouch!
yep. I love when we're going someplace that allows me to take some of the back roads around here.

When Robert Moses developed the Parkway system around NYC and Long Island in the 1930, they specifically built stone arch bridges to prevent buses from the inner city from being able to access Long Islands Parks and countryside (Robert Caro, The Power Broker) We still have many low clearance bridges on the parkways, which remain passenger vehicle only roadways.. occasionally an errant semi or truck access the parkways... the trucks always lose...Not only is the truck usually destroyed... The State Troopers show no mercy handing tickets to the drivers...

If you can find a contract number on those plan sheets you should be able to find the RFP for the scope of work.. I can't make out the numbers on the existing vs planned sections, but that alone can tell you a lot about the work...

Again... the actual jacking of the structure is yawn inducing.. Many people get overly excited So much prep work is done before Jacking pressure for each jack are calculated.. survey telltales placed... Each jack has a pressure gauge fed by a manifold with shut off valves for each jack..

One of the main concerns is not introducing unwanted stresses into the existing structure..I.E. if one jack is overpressure, and the surveyor shows the deck is not moving at one location... Did someone forget to cut a weld or release a keeper?

Avoiding making the deck look like a monkey saddle is important.

https://mathworld.wolfram.com/images...addle_1000.svg

^ There are just SO many occupations represented on PPOT.

The idea that Navin Johnson has invented eyeglass pushers, AND can do highway and bridge lifting calculations isn't lost on me.
Who knows what other kinds of jobs he might be telling us about someday?

Interesting stuff. The only trucks that I can understand hitting low bridges are trucks that have been rented and are driven by folks not used to driving something where you have to worry about the height.

But when you make a monkey saddle, that's when things get exciting! LOL

Its The "Optigrab"

<iframe width="560" height="315" src="https://www.youtube.com/embed/i5jTH89HjTA?si=tmTg0Feq3SYMN6bF" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>

:)

In case anyone is curious, I think the bridge ended up getting lifted at least 2-3'. As you drive under it, it looks like it was lifted 12-18", but I'm pretty sure that the bridge is quite thick and so it's like the signs on the interstate that don't look very big but are actually 4' x 5'.

WHat do we think this dimension is? Because I think the bridge was lifted 35-45% of that dimension. I'm assuming that dimension is probably several feet.

http://forums.pelicanparts.com/uploa...1752013799.jpg

The barrier on top of the bridge is typically 32"

The portion below the barrier appears to be equally as thick.

It looks like the construction is precast/post-tensioned beams say 24"

then a reinforced deck (6-12")

Something is not adding up in my eye regarding the picture... its hard to tell if the barrier was pre-cast, or formed in place..

but OA Id say 5-6'

is the bridge still in service?

OK, and thank you for the info. I'd say that the bridge was probably raised ~2' - 2.5' then (assuming 5-6' total thickness). I'll try to take a closer look when I come home tomorrow to see how much of the barrier is above the previous level.

No, the bridge is not in service. The announcement that I saw said that it would probably be out of service for several months (2 or 4, I think).

Both ends of the bridge are raised by quite a bit (2-2.5' I would guess) from the road bed on either end of the bridge.
http://forums.pelicanparts.com/uploa...1752019495.jpg

When I drove past yesterday, it looks like the bridge is currently lifted the height of the side barriers (32"). And it looks like they are working on building up the two earthen bits at either end of the bridge.

This is the latest update.