find a firm that can help you take advantage of your expertise or as others mention, move to a pm position where you're dealing more with the day to day stuff and less of design. if you're a "people person", you might even be able to find a marketing position but in a crunched market, the marketing folks may be the first to get the pink slip. you might consider a materials testing firm since they often have many different avenues that one can take within the firm. in our firm, none of us strictly do design. we all have projects (construction or geotechnical) to manage. we perform calculations on everything from deep foundations to retaining walls to geophysical work. some of our people do nothing more than manage our field personnel and oversee special inspections. and we even have people that are responsible for overseeing our labs.
with a structural (and civil?) background, you might be able to transition to a special inspections kind of person where you basically manage and are the point of contact for the special inspections performed within a company.
however, with any job, i doubt you will ever stop learning. but maybe you can find something that allows you to progress at a more reasonable/comfortable rate in a field that you can enjoy more.