Older Interstate sign with "D.C." Interstate signs in the District of Columbia have had three diffrent names placed above the numbers - as you will see. (Photo by Joe Koehler)
Older Interstate sign with "DISTRICT OF COLUMBIA". I believe that these pre-date the "D.C." signs. (Photo by Joe Koehler)
A reused "D.C." sign in the foreground with a current generic interstate sign in the background. (Photo by Joe Koehler)
Another reused sign. Look very carefully at the sign in the foreground - you will see an old I-95 sign under the current sign with a "WASHINGTON D.C." name above the numbers. (Photo by Joe Koehler)
Here's an old I-95 sign that wasn't removed or covered up. I-95 used to run through D.C along the Anacostia Freeway until it was rerouted along the east leg of the Capital Beltway in the early 1970's. (Photo by Joe Koehler)
A fairly new looking DC - US 1 sign. All US signs in DC have this type of sign - a one-piece sign with the directional in white on black lettering. Current US signs omit the "DC - US" logo and the bar. (Photo by Joe Koehler).
Another reused sign. Note that this used to be a US-29 route marker. (Photo by Joe Koehler).
Constitution Avenue (April 2000) Another DC - US sign.
The District only has one marked highway. After I-95 was rerouted to the Capital Beltway, the Anacostia Freeway became DC-295. The road is not built to Interstate standards in that it has no shoulders and sharp exit ramps, so it could not display an Interstate sign (tell that to the people in New Jersey!). Most maps still show this road as I-295. (Photo by Joe Koehler)