A redirect from the old URL should be making its way into the site soon.
TraitBank describes the back-end infrastructure that EOL uses to gather, organize and serve biodiversity trait data. Traits can be accessed directly on each taxon page - refer to the data tab - and you see traits in action in the autogen sentence on the taxon overview. You can also search traits using our advanced search facility (which has documentation on the way, @hammockj tells me). There are links to these on the page above.