KL&A Engineers & Builders Engineers KL&A Engineers & Builders Visit Website Request Info 215 N. 12th Street, Unit E Carbondale, CO 81623 (970) 927-5174 LinkedIn About Map About Structural engineers and designers located in Carbondale, CO focused on high-end residential and commercial projects throughout the roaring fork valley. What's Nearby? Distance: 5 10 15 20 25 50 mi.