the ramps in this interchange and also the east split have ramp letters on this document from... 2018. google streetview doesn't seem to have ramp letters though so will need to see what is actually signed. https://app.e-builder.net/public/fileview_fileview_act.aspx?portaltype=7&f={1903c90b-6a51-4d53-9121-5f2df8604158}&ExternalFormID=&ExternalInstanceID=&ExternalLinkID=&fromViewer=