Arches (arko) were a common sight along national roads across the country. I have written about these arkos in previous posts including those with old photos that I took while on field work:

With all the road widening projects ongoing along many national roads, many arches have been demolished while new ones apparently have not been constructed (whether really new ones or those replacing the old ones). I still think these are good landmarks and an opportunity to feature products, traditions or whatever may represent or identify the city or municipality.

–