Credit: Interstate 66 is often congested during the morning commute. (WTOP/Rich Hunter)

Planners, commuters disagree over plans to improve I-66

Warning period ends for new D.C. speed cameras

Roads re-open after water main break in Alexandria

Arlington Memorial Bridge a symbol for infrastructure challenges (Photos)

Metro doors open as train accelerates in D.C.

Higher speed rail could ease trips on I-95