[3] Covered Bridges Today provides information on 412 bridges in the states of Connecticut, Indiana, Kentucky, Maine, Maryland, Massachusetts, Michigan, New Hampshire, New York, Ohio, Pennsylvania, Vermont, Virginia and West Virginia.

Each entry includes a description of the bridge, its history, a black and white photograph, and a local street map with directions.

Krekeler states that construction dates prior to 1850 are often questionable because of an absence of records and that these early sources would often contradict one another.

[4]: 28  Krekeler's bibliography cites an extensive collection of state maps, numerous local newspaper sources and works like World Guide to Covered Bridges by Richard Donovan.

Hart recounts the claim that it is the "only complete pictorial study of covered bridges in the United States".

]"[6] Paul Grondahl refers to the book as an "encyclopedic, definitive work" in an article in the Times Union.

[5] Historic American Engineering Record surveys have cited Krekeler's work numerous times, ranging from the estimations of the surviving truss types of covered bridges to more general and unspecific references.