Iowa Kong-lō͘ 4 (Eng-bûn: Iowa Highway 4) sī chi̍t tiâu ūi-tī Bí-kok Iowa Chiu ê chiu-kip kong-lō͘.


Iowa Kong-lō͘ 4
Iowa Highway 4
Lō͘-sòaⁿ ê ki-pún chu-sìn
Uî-hō͘ pō͘-bûn Iowa Kau-thong Pō͘-bûn
Chú-iàu ê kau-hōe kong-lō͘