The Monterey bridge was built by the city of Janesville (a 1908 note reads "rebuilt" — both readings reported); Ira Miltimore and John Peters were the contractors.

The evidence

• “It has been twice rebuilt since it became the property of the structure erected in its stead. city. The lower bridge was also torn away, after several years' use, and the present substantial The bridge at Monterey was built by the city in 1856. Ira Miltimore and John Peters were the contractors.”

  1879-history-of-rock-county/14-rock-county-ch08-janesville.md, PDF p. 590 / book p. 594

  Butterfield, C. W., et al. The History of Rock County, Wisconsin: its early settlement, growth, development, resources, etc. Chicago: Western Historical Company, 1879. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871585.

  Grade A: Found on a page of one of our sources

  

• “The gates were repaired, but as the law now allowed the lower bridge, it was soon completed, and then the owners of the upper bridge voluntarily took the toll gates from their hinges and Janesville had two free bridges. The bridge at Monterey was built by the city in 1856. All three bridges have been several times rebuilt, and the upper two are now substantial structures.”

  1908-brown-rock-county/26-history-of-janesville.md, Vol. 2, PDF p. 86 / book p. 597

  Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.

  Grade A: Found on a page of one of our sources · may repeat 1879-history-of-rock-county, so not counted as independent