Monmouth, Illinois Roads / Tertiary Highways

Latitude: 40.9139 (40°54′50″N), Longitude: -90.6406 (90°38′26″W)

Latitude: 40.912 (40°54′43″N), Longitude: -90.6454 (90°38′43″W)

Latitude: 40.9197 (40°55′11″N), Longitude: -90.6309 (90°37′51″W)

Latitude: 40.9212 (40°55′16″N), Longitude: -90.6557 (90°39′20″W)