National Boards > Bridges

Old vs new bridges

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Dirt Roads:

--- Quote from: Mapmikey on March 17, 2021, 11:02:14 AM ---Could a 1960s bridge be rehabbed instead of rebuilt entirely?  The modern railing gives a hint but not the whole story...
Compare the underneath at Exit 97 which has original piers, plus new piers added to get shoulders onto it - https://goo.gl/maps/mSkGGd2BzzZzQ1Tv8

--- End quote ---

Slick.  I don't drive the I-95 corridor much anymore, so I totally missed this construction.  Wasn't aware that NCDOT had any bridges that widened both sides of the original lanes to add shoulders.  These bridges are over the North Carolina Rail Road, which may have something to do with the construction methodology.

Mapmikey:

--- Quote from: Dirt Roads on March 17, 2021, 01:46:25 PM ---
--- Quote from: Mapmikey on March 17, 2021, 11:02:14 AM ---Could a 1960s bridge be rehabbed instead of rebuilt entirely?  The modern railing gives a hint but not the whole story...
Compare the underneath at Exit 97 which has original piers, plus new piers added to get shoulders onto it - https://goo.gl/maps/mSkGGd2BzzZzQ1Tv8

--- End quote ---

Slick.  I don't drive the I-95 corridor much anymore, so I totally missed this construction.  Wasn't aware that NCDOT had any bridges that widened both sides of the original lanes to add shoulders.  These bridges are over the North Carolina Rail Road, which may have something to do with the construction methodology.

--- End quote ---

Here are examples of the same method with no railroad involved, on I-85 northeast of Durham - https://goo.gl/maps/jURrNWqRj7vAVqWLA
https://goo.gl/maps/YAc4CPfuqx88njm86

tolbs17:
This my guess for the bridges in North Carolina.

1950s

1960s

1970s steel barriers

1970s brown barriers

1980s (present-day)

1990s steel barriers (1)

1990s steel barriers (2)

1990s normal barriers (the southbound bridge)

2000s

2010s I miss those red things on the bottom. compared to this which doesn't have them.

2010s This one uses the steel barriers. On a freeway. Interesting.


I have to say, I enjoy the ones with the steel barriers more. They look nicer and not so dull looking. But I'm sure it's a little more costly to build though.

SkyPesos:
Correct me if I'm wrong, but from some observations, it looks like some of the early bridges have steel railings on them, like this example .

tolbs17:

--- Quote from: SkyPesos on March 18, 2021, 12:24:10 PM ---Correct me if I'm wrong, but from some observations, it looks like some of the early bridges have steel railings on them, like this example .

--- End quote ---
The ones from the 60s have them posted above. Also the I-440 segment (currently being upgraded right now) has them.

The steel railings are just for decoration so they can look nicer.

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