{"nrhp_refnum":"99001357","name":"Fifteenth Street and Oklahoma Avenue Brick Street","other_names":[],"category":"structure","location":{"address":"500 through 1217 Fifteenth St. and 1500 through 1521 Oklahoma Ave.","address_restricted":false,"city":"Mattoon","county":"Coles County","state":"IL","lat":39.47057696300004,"lon":-88.36079147299995,"geom_source":"nps_gis"},"listed_date":"1999-11-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["local"],"summary":{"what_it_is":"A brick-paved residential street segment in south-central Mattoon, Coles County, Illinois, built in 1924. It runs eight blocks (0.55 mile) along Fifteenth Street and turns west for one block on Oklahoma Avenue.","why_significant":"The nomination argues the street is locally significant under Criterion C for engineering as a good example of 1924 municipal street construction. It represents the brick paving method popular in the early twentieth century and is one segment of Mattoon's remaining 4.3 miles of brick streets. It retains its materials, design, workmanship and residential setting.","narrative":"Fifteenth Street and Oklahoma Avenue form a brick-paved road segment in a quiet, mostly single-family neighborhood in south-central Mattoon. Built in 1924, it runs eight blocks, about 0.55 mile, and then turns west for one more block on Oklahoma Avenue. The roadway uses vitrified paving bricks laid over a five-inch concrete base and a sand and tar layer, with concrete curbs and gutters, grass parkways and concrete sidewalks. Brick catch basins and manholes with cast iron covers made by Mattoon's H. W. Clark foundry drain the street into the city's combined storm and sewer system. Some intersections have been covered with asphalt, and patches of concrete and asphalt interrupt the brick. The street was listed for its engineering significance as a well-preserved example of municipal brick paving from the 1920s, one of 4.3 miles of brick streets that survive in a city that once had more than 22 miles of them. Its residential setting remains much as it was in 1924.","period_of_significance":"1924","architect_builder":"Shinn, Harry E.","architectural_style":"Other: Brick Street","criteria":["C"],"status_note":"Still in use as a street; a civil engineer rated five of nine blocks of brick surface in good condition, two fair and two poor, with some asphalt and concrete patching.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:37.527706-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/10/8919/28891910/content/electronic-records/rg-079/NPS_IL/99001357.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/99001357/363cfbd786-800.webp","url_1600":"https://nationalhistoricalregister.com/media/99001357/363cfbd786-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Fifteenth_at_Walnut_in_Mattoon.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Fifteenth_at_Walnut_in_Mattoon.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28891910","wikipedia":"https://en.wikipedia.org/wiki/Fifteenth_Street_and_Oklahoma_Avenue_Brick_Street","wikidata":"https://www.wikidata.org/wiki/Q16891315"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/coles-county/fifteenth-street-and-oklahoma-avenue-brick-street-99001357/"}