The first major long - lasting bridges were made by romans more than two thousand years ago when they pioneered the masonry arch bridge. Arches work by transferring the load through the arch to the
transport and machinery > road transport > fixed bridges > examples of arch bridges image - Visual Dictionary
NOVA Online, Super Bridge
The Beautiful Engineering behind the Arch Bridges!
Solution Arch Bridge
Stone Bridge: How to Build a Roman Arch Bridge : 12 Steps (with Pictures) - Instructables
Lowering Method for Concrete Arch Bridges
Stone Arch Bridges: The Concept Explained – Stone Arch Bridges
Arch Bridges
Arch bridge Facts for Kids
Through arch bridge - Wikipedia