{"nrhp_refnum":"07000029","name":"Legislative Route 1 Sycamore Allee","other_names":[],"category":"site","location":{"address":"Legislative Route 1, approx. 1 mil N and S of Halifax","address_restricted":false,"city":"Halifax and Reed","county":"Dauphin County","state":"PA","lat":40.43608858350004,"lon":-76.94934564690996,"geom_source":"nps_gis"},"listed_date":"2007-02-07","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Landscape Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A two-part discontiguous roadside allee of Oriental Plane (sycamore) trees lining State Route 147, formerly Legislative Route 1, in Halifax and Reed Townships, Dauphin County, Pennsylvania. It consists of 314 trees as of 2006.","why_significant":"The allee was planted in 1922 as part of a state program of roadside tree planting carried out by the Highway Department with the Department of Forests and Waters. The nomination argues it is a designed rural landscape that illustrates early twentieth-century landscape architecture and the state's beautification of rural roads. It retains enough integrity of location, design and association to convey that significance despite tree losses.","narrative":"Oriental Plane trees line State Route 147 in Halifax and Reed Townships, Dauphin County, Pennsylvania, in two separated stretches totaling 314 trees as of 2006. The Highway Department and the Department of Forests and Waters planted the allee in 1922 as part of a state program to beautify important highways, and the trees were set about 60 feet apart on both sides of the road where practicable. The road follows part of the Shamokin Path, an early route between Harrisburg and Sunbury, and was designated Legislative Route 1 under the 1911 Sproul Highway Act. The planting is regarded as an example of landscape design applied to a rural road in the early twentieth century. Since planting, about a third of the southern trees and more than half of the northern trees have been lost, though the surviving trees remain in their original positions and the allee still conveys its historic design and character.","period_of_significance":"1922","architect_builder":null,"architectural_style":null,"criteria":["C"],"status_note":"Of the trees originally planted, about 143 in the southern section and about 89 in the northern section have been lost, and the trees that remain are still in place.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:10:27.0652-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/07000029.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/07000029/98df4737c3-800.webp","url_1600":"https://nationalhistoricalregister.com/media/07000029/98df4737c3-1600.webp","licence":"CC BY-SA 4.0","author":"Moi529","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Legislative_Route_1_Sycamore_Allee_Halifax,_Pennsylvania_(1_of_8).jpg\" rel=\"noopener\">Moi529</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Legislative_Route_1_Sycamore_Allee_Halifax,_Pennsylvania_(1_of_8).jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71995727","wikipedia":"https://en.wikipedia.org/wiki/Legislative_Route_1_Sycamore_Allee","wikidata":"https://www.wikidata.org/wiki/Q6518262"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/dauphin-county/legislative-route-1-sycamore-allee-07000029/"}