I'm not sure which Washington you are talking about so I'll list both.
Washington D.C.:
Interstate 95 - New England Thwy
US 50 - Loneliest Road in America
Interstate 495 - Capital Beltway
Washington:
I-90
I-5
US 101
the major highways are #29 and#133
There are many major highways in the United States. A few of the major highways are I-80, I-75, and I-70.
The major north-south highways are I-75 and I-69. The major east-west are I-94 and I-96
I-95 is one of the well known highways.
They were and still are the major transportation routes.
Highways link cities - there are no major cities in the northern part of Canada
mloiu
81,270,70,
locomoco
CHCIKEN
Louisiana is a state in the southern United States. There are ten major highways in Louisiana: LA Highways 1 and 23, Highways 90, 190 and 167, and Interstates 10, 20, 49, 55 and 12.
Maryland has a few major highways in it. Interstate 95 is one of the busiest highways in the country. It runs north and south. Also 70 and 83 run through the state.