Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
4.9
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
8168
Points per Word
0.000122
Page Count
121
Points per Page
0.008264
Series
Science Comics
Description
Follow Bea, Archie, Trudy, and Spencer as they crisscross the globe using every type of bridge: beam, arch, truss, and suspension. From ancient low-slung rope bridges to modern hi-tech towers of steel, they'll traverse them all.