Do you have a link? Please!
This link is to DC Dept of transportation, seems to be very slow.
http://app.ddot.dc.gov/services_dsf/traffic_cameras/map_10.asp
This link is to Trafficland, which uses the DC Dept of transportation cameras, works better.
http://www.trafficland.com/findacam/trafficvideo.php?uid=0&map=19
For either map, click on the green dot on 7th Street, just above Const. Ave.
If video times out, just click on the dot again.