Bridge 94.08 is probably measured from Boston. When the B & M Valuation Survey was being made as of June 30, 1914, bridges were numbered starting with 1. As to what got a number is probably lost to history, but assume there was a Bridge 41. The previous one would have been 40 and the next 42. Then between 40 and 41 would be culverts, 41A, 41B, 41C, etc. What if a new culvert had to be dug between Bridge 41 and Culvert 41A. It would probably be A41. The numbering began in Boston and worked its way out the mainlines, like the Western Route first, then the Eastern. If the highest number on the Western up around Scarboro Beach was say 35, then starting on the Eastern, Bridge 36 would be somewhere around Everett. The numbers just kept going up. Each main or branch did not start with Bridge 1. There was only one bridge with each number. However, this was quite confusing and a numbering system relating to mileposts was adopted, probably in the 1920s. However, since the Valuation Survey had bridges listed by their original numbers, any time an alteration was made to one of the Valuation bridges, the records would indicate "Bridge #94.08, Old xxx). Overhead highway bridges were included in the numbering.