To the south , SR 310 was extended into Fairfield County to its current southern terminus at a then newly extended SR 204 .
In 1937 , SR 310 underwent extensions at both the southern and northern ends of the route .
To the south , SR 310 was extended into Fairfield County to SR 310 's current southern terminus at a then newly extended SR 204 .
In 1937 , SR 310 underwent extensions at both the southern and northern ends of the route .