Bridges and Fences

Bridges keep the flocks from fishes
Interstates from lesser roads
Fences keep cows from sheep
And gardens from neighbors toads

Bridges let the boats go by
While trucks can barrel onward
Fences settle arguments
And delineate many a yard

Fences segregate and divide
To keep me out or keep mother in
Bridges span stormy straights
And join what was asunder

Fences built of barbed wire
Deny condemn and sever
Bridges cross chasms and enable
Meeting and understanding