Width of Lionel 47 crossing gate roadway?

[Terry]

I went to mark the roads on the layout and realized I need to put the 47 double gates in since they define the roads. I can't find one.

Can someone tell me how wide the white roadway is and how wide the green end is? The white area plus the two green ends is the overall length.

Thanks.

[starfire700]

The roadway is 8-1/2 inches, each side is 4", overall 16-1/2" for a #47.

[Terry]

Thanks.