{"nrhp_refnum":"73001516","name":"Y Bridge","other_names":[],"category":"structure","location":{"address":"At foot of Main St., over the Licking and Muskingum rivers","address_restricted":false,"city":"Zanesville","county":"Muskingum County","state":"OH","lat":39.94043244900007,"lon":-82.01323806199997,"geom_source":"nps_gis"},"listed_date":"1973-11-02","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["state"],"summary":{"what_it_is":"A steel and concrete Y-shaped bridge at the foot of Main Street in Zanesville, Ohio, crossing the Muskingum and Licking Rivers; the present structure opened in January 1902 and is the fourth bridge on the site.","why_significant":"It was one of the first bridges in the U.S. built with concrete-steel construction and was the only Y bridge in existence at the time. It is described as the best known and purest in shape and design of any such bridge in the country. It also continues a long local tradition of a Y bridge at this site dating to 1814.","narrative":"Y Bridge carries traffic from the foot of Main Street in Zanesville, Ohio, across the Muskingum River, then divides at a pier into two branches that cross the mouth of the Licking River. Built of steel and concrete, it has eight spans and nearly a thousand feet of length, with a 30-foot roadway width. A contract for it was let in September 1900, and it opened in January 1902. It is the fourth bridge at the site, following covered and partly covered predecessors from 1814, 1819 and 1832, some of which collapsed or were condemned. The nomination highlights its early use of concrete-steel construction, its unusually flat arch, and its status as the only Y bridge then in existence. It also describes the bridge as the purest example of its shape in the country. The original concrete balustrade was replaced with a pipe railing after damage in the 1913 flood, but the structure is otherwise essentially unchanged.","period_of_significance":"20th Century; specific date 1902","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Listed as in good condition and essentially unchanged apart from a replaced balustrade; a later agreement describes a planned replacement of the superstructure while retaining the substructure. The form marks it as occupied and in transportation use.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:10.039758-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/73001516.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/73001516/b7c01e4192-800.webp","url_1600":"https://nationalhistoricalregister.com/media/73001516/b7c01e4192-1600.webp","licence":"CC BY-SA 3.0","author":"MauriceJFox3","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:ZanesvilleOH_YBridge.jpg\" rel=\"noopener\">MauriceJFox3</a>, <a href=\"http://creativecommons.org/licenses/by-sa/3.0/\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:ZanesvilleOH_YBridge.jpg"},"district":{"nrhp_refnum":"07000025","name":"Muskingum River Navigation Historic District","url":"https://nationalhistoricalregister.com/districts/ohio/muskingum-river-navigation-historic-district-07000025/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71990727","wikipedia":"https://en.wikipedia.org/wiki/Y-Bridge_(Zanesville,_Ohio)","wikidata":"https://www.wikidata.org/wiki/Q8045693"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/muskingum-county/y-bridge-73001516/"}