
Bridges are a crucial part of trade and transportation. They allow vehicles and pedestrians alike to cross everything from rushing rivers to rocky ravines.Readers (Grades 3-5) will trace the history of bridges from their invention in ancient times to the construction of...

Bridges are a crucial part of trade and transportation. They allow vehicles and pedestrians alike to cross everything from rushing rivers to rocky ravines.Readers (Grades 3-5) will trace the history of bridges from their invention in ancient times to the construction of...