Instruct: Classify the given Amazon review as either positive or negative.
Query: excellent book about excellent bridge

..Congratulations to authors..topic,presentation, graphics, photos..all together are excellent...This is a book which gives an in-depth presentation of design/construction process of Alamillo Bridge.Detailed structural drawings, structural analysis-design and its construction ..everything is in this book..in detail.....Very useful for structural engineers and everyone interested in bridge design.