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Author Topic: Old vs new bridges  (Read 7734 times)

tolbs17

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Re: Old vs new bridges
« Reply #75 on: July 23, 2021, 11:29:09 PM »

These bridges do not match.

They were built almost 15 years apart...why do they need to match?
Talking about how the way they were built. They probably didn't even think they were going to extend the highway. The left barrier is taller compared to the right barrier.
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Mapmikey

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Re: Old vs new bridges
« Reply #76 on: July 24, 2021, 09:12:58 AM »

These bridges do not match.

They were built almost 15 years apart...why do they need to match?
Talking about how the way they were built. They probably didn't even think they were going to extend the highway. The left barrier is taller compared to the right barrier.

For someone who notices small differences in stuff (which you should come out and say in the initial post instead of us guessing), you miss the bigger pictures.

Yes, it is true the left barrier is taller than the right one.  If you check out older streetviews, you will notice the bridge has been widened and I believe they wanted the left barrier to be the same height as the new bridge's left barrier.  This actually supports your theory that they weren't 100% sure the road would get extended (though they definitely knew they wanted to, as it was signed as Future I-840 by 2002).

A much bigger difference in the two bridges can be seen from a different viewpoint - https://goo.gl/maps/cXaPpRpzSPtRjBbu7

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tolbs17

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Re: Old vs new bridges
« Reply #77 on: July 24, 2021, 07:19:58 PM »

These bridges do not match.

They were built almost 15 years apart...why do they need to match?
Talking about how the way they were built. They probably didn't even think they were going to extend the highway. The left barrier is taller compared to the right barrier.

For someone who notices small differences in stuff (which you should come out and say in the initial post instead of us guessing), you miss the bigger pictures.

Yes, it is true the left barrier is taller than the right one.  If you check out older streetviews, you will notice the bridge has been widened and I believe they wanted the left barrier to be the same height as the new bridge's left barrier.  This actually supports your theory that they weren't 100% sure the road would get extended (though they definitely knew they wanted to, as it was signed as Future I-840 by 2002).

A much bigger difference in the two bridges can be seen from a different viewpoint - https://goo.gl/maps/cXaPpRpzSPtRjBbu7
I say it should have been built as a T intersection until an extension was put there or just make a wide bridge. Then it would look more handy. But it looks awkward.
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kphoger

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Re: Old vs new bridges
« Reply #78 on: July 25, 2021, 05:10:46 PM »

But it looks awkward.

well we don't want that
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tolbs17

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Re: Old vs new bridges
« Reply #79 on: July 25, 2021, 05:12:08 PM »

But it looks awkward.

well we don't want that
I mean like, how were they thinking when they were thinking about extending the highway...
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dlsterner

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Re: Old vs new bridges
« Reply #80 on: July 25, 2021, 07:02:10 PM »

These bridges do not match.
If the poster is concerned about the above bridges not matching (they look almost identical to me), image the hysteria resulting from our mis-matched Bay Bridges across the Chesapeake:



And I would guess a third bridge (if ever built in our lifetimes) would be visually different as well.

tolbs17

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Re: Old vs new bridges
« Reply #81 on: July 25, 2021, 07:17:48 PM »

These bridges do not match.
If the poster is concerned about the above bridges not matching (they look almost identical to me), image the hysteria resulting from our mis-matched Bay Bridges across the Chesapeake:



And I would guess a third bridge (if ever built in our lifetimes) would be visually different as well.
Compared to these, or even these?

Hell, even these do not match.
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tolbs17

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Re: Old vs new bridges
« Reply #82 on: July 27, 2021, 11:10:24 PM »

When looking at these bridges, you may wonder why they are very high (I've seen some ones that are a little lower to carry trains), And the reason is cause of the low voltage lines and a nearby river next to a road.

Like hell, even these are lower.
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Mapmikey

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Re: Old vs new bridges
« Reply #83 on: July 28, 2021, 06:25:01 AM »

When looking at these bridges, you may wonder why they are very high (I've seen some ones that are a little lower to carry trains), And the reason is cause of the low voltage lines and a nearby river next to a road.

Like hell, even these are lower.

The first bridge is that high because it crosses the Intracoastal Waterway.  Otherwise it would need to be a draw bridge.

The second bridge can be lower because trains are not as tall as sailboats.
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kphoger

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Re: Old vs new bridges
« Reply #84 on: July 28, 2021, 09:59:34 AM »


When looking at these bridges, you may wonder why they are very high (I've seen some ones that are a little lower to carry trains), And the reason is cause of the low voltage lines and a nearby river next to a road.

Like hell, even these are lower.

The first bridge is that high because it crosses the Intracoastal Waterway.  Otherwise it would need to be a draw bridge.

The second bridge can be lower because trains are not as tall as sailboats.

If it were all about the power lines, then I'm sure it would have been a lot cheaper to just run them underground at that point or else construct taller towers and run them over both roads.
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snowc

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MCRoads

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Re: Old vs new bridges
« Reply #86 on: September 14, 2021, 09:36:57 AM »

These bridges do not match.
If the poster is concerned about the above bridges not matching (they look almost identical to me), image the hysteria resulting from our mis-matched Bay Bridges across the Chesapeake:



And I would guess a third bridge (if ever built in our lifetimes) would be visually different as well.

If a third bridge is built, what do you want to bet that it will be a precast box beam, with a cable stayed main span?
I hate those types of bridges, as they are used so much. But, they are used a lot because they are cheap.
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