National Boards > Bridges

Old vs new bridges

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tolbs17:
If this highway (I-95 in Roanoke Rapids) opened in the 60s, were these bridges built in the 60s? Look at the Roanoke river too.

Max Rockatansky:
Have you checked the substructure of the bridge on the street below for construction year stamps?

webny99:
My gut instinct was that they're definitely not built in the '60's; they look fairly new to me.

I looked it up, and sure enough: Both the Roanoke River and US 158 bridges were built in 1999/2000, per NC's bridge inventory (see page 133).

tolbs17:

--- Quote from: webny99 on March 16, 2021, 10:14:38 PM ---My gut instinct was that they're definitely not built in the '60's; they look fairly new to me.

I looked it up, and sure enough: Both the Roanoke River and US 158 bridges were built in 1999/2000, per NC's bridge inventory (see page 133).

--- End quote ---
I see. It says 1999. They must have been replaced then cause the highway opened in the 60s.

Compare it to the Dunn bridges and those haven't been replaced since then?

Mapmikey:

--- Quote from: tolbs17 on March 16, 2021, 10:29:11 PM ---
--- Quote from: webny99 on March 16, 2021, 10:14:38 PM ---My gut instinct was that they're definitely not built in the '60's; they look fairly new to me.

I looked it up, and sure enough: Both the Roanoke River and US 158 bridges were built in 1999/2000, per NC's bridge inventory (see page 133).

--- End quote ---
I see. It says 1999. They must have been replaced then cause the highway opened in the 60s.

Compare it to the Dunn bridges and those haven't been replaced since then?

--- End quote ---

Yes, the Dunn bridges are original 1955 structures.

Here are some tips on figuring out this kind of question in NC...

- Original 1960s bridges on NC interstates have no shoulders at all and have the railing style like this (many covered by guard rail now) - https://goo.gl/maps/kKDP1BiQw6cBb5CVA

Could a 1960s bridge be rehabbed instead of rebuilt entirely?  The modern railing gives a hint but not the whole story...
Compare the underneath of the US 158 interchange which has modern piers - https://goo.gl/maps/mJpo9VdwrV13gVUg9
Compare the underneath at Exit 97 which has original piers, plus new piers added to get shoulders onto it - https://goo.gl/maps/mSkGGd2BzzZzQ1Tv8

On the first bridge I link way above, the surface has been rehabbed but nothing else.

The US 158 interchange used to be really dangerous northbound because the on-ramp from US 158 ended entirely before the adjacent railroad bridge and there was next to no merge area.  This has always been a very busy interchange.

For bridge dates in general:

If you want to know when a bridge was built (or rebuilt - sometimes they have original and rebuilt dates) go here - http://bridgereports.com/

If you want to know when a bridge rebuilt entirely since 2011 was built prior to replacement, go here - https://web.archive.org/web/20110501230146/http://www.uglybridges.com/

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