Question About : Redirecting Old Pages to New & More Relevant Ones

[Southbay_Carnivorous_Plants]

I'm looking over a friends website, which used to have great natural ranking for some big keywords. Those ranking & CTR's have dropped a lot, so the next thing I checked into was top selling Brand & Category pages.

Its seems like every year or so a New Page was constructed for each brand... Many of which have high quality and natural inbound links.  However, the pages no longer have products and simply look outdated.  I'm trying to figure out if they should place redirects on all the old pages to a new URL which is more seo friendly.

Example Links :

http://www.xyz.com/nike2004.html , http://www.xyz.com/nike-spring2006.html , http://www.xyz.com/2011-nike-shoes.html  - (have quality inbound links, bad content) ....

Basically would it be advantageous to place redirects on all of these example pages to a new one that will be more permanent... http://www.xyz.com/nike-shoes.html  I'm also looking at about 15 brands and maybe 100+ old/outdated urls, so I wasn't sure if I should do this & to what extent.  Considering many of the brand pages do rank, but not as well as they should...

Any input would help, thanks

[TakeshiYoung]

Yes, if the old pages are completely outdated, then it makes sense to redirect them to an up-to-date page. If the old pages still have some value, then you may also consider just adding a prominent note at the top of the page linking to the new location.