500 miles
About 3-7 miles or 4-9 acres.
X=9.3
1030km
a highway is big but a street is small in length
Length of highway = 5280 ÷ cos 8 = 5331.89 feet (2dp)
The length of the highway is 12 miles (19 km).
The main highway that runs the length of the island is called State Highway 1.
About 8000 km,,
kilometer
The total length of the Pan-Philippine Highway is 2,185 miles or 3,517 kilometers. In the north, the highway starts and Laoag City, Ilocos Norte. The south terminus is in Zamboanga City.
In width, the plainest 2-lane highway is almost 1,000 centimeters, not counting the shoulders. In length, any highway can be as many as you want.
The width of a highway would be best measured in meters. The length would be measured in kilometers.
Rules I found online say 3m or 10ft with 9m or 30ft between. However, when I used to paint them with the highway dept in 1971 the length was 15 ft with 45 ft between. This appears to have changed. But you can measure the distance of the highway in miles or killometers!