This article is written
from the Real World
point of view
Edward Stratemeyer 002
The Mystery of the Spiral Bridge
House name Franklin W. Dixon
Outline Andrew E. Svenson[1]
Illustrator Rudy Nappi[2]
Cover artist Rudy Nappi
Publication information
Publisher Grosset & Dunlap
Producer Stratemeyer Syndicate
Publication date 1966
Media type Hardcover
Pages 177
ISBN ISBN 0-448-08945-9
Series The Hardy Boys
Preceded by The Haunted Fort
Followed by The Secret Agent on Flight 101


The Mystery of the Spiral Bridge is the 45th book in The Hardy Boys series. It was first published in 1966 by Grosset & Dunlap.

Plot summary

Frank and Joe Hardy are determined to bring to justice the vicious criminals who kidnapped their detective father while he was investigating sabotage of a road-building project in the Kentucky wilderness.

After Mr. Hardy 's amazing escape, the boys pick up a clue - the word "Felix" mumbled by their sick father in his delirium. When they discover that the dossier of a notorious ex-convict has been stolen from Mr. Hardy's files, the two young sleuths are doubly spurred to action.

The trail leads them to New York City but ends abruptly in a cemetery! Stunned, Frank and Joe come upon another clue - a spiral symbol. Aided by their pals, the boys take jobs on the highway construction crew in Kentucky to try to track down the kidnappers and the nefarious saboteurs. But who among the crew is friend and who is foe?

In a desperate maneuver that almost costs them their lives, the Hardys bring to a spine-tingling close one of the most action-packed and suspenseful mysteries they have ever solved.


This list is incomplete, you can help The Hardy Boys Wiki by expanding it.



Businesses and organizations

  • Prito Construction Company


to be added.


  1. Who Wrote the Hardy Boys? at
  2. The Mystery of the Spiral Bridge Major Edition Types at The Hardy Boys Unofficial Home Page

External links

to be added.

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