This design-build project was deftly coordinated in one of the most congested highway interchanges in the country. The interchange includes 10 lanes, more than 20 highway alignments and 11 curved and skewed bridge structures that connect four highways and two airports.
It's not clear why one team opted out of competition for the estimated $11 billion I-270/Beltway expansion in a major commuter corridor outside Washington, D.C.