\u6295\u7a3f\u30d7\u30ec\u30d3\u30e5\u30fc<\/title>\n<\/head>\n<body>\n<div style=\"max-width:780px; margin:0 auto; font-family:sans-serif; color:#333; line-height:1.8;\">\n\n<p style=\"font-size:13px; color:#888;\">Update date: April 17, 2026<\/p>\n\n<p>Traffic restrictions are in place on National Route 158 (near Nagawado Dam) due to construction work on the Shin-Iriyama Tunnel.<strong style=\"color:#c00;\">Restrictions will be lifted at 3:00 PM on Friday, April 24, 2026.<\/strong>It is scheduled to happen.<\/p>\n\n<p>After the restrictions are lifted, the Shin-Iriyama Tunnel and Iriyama Tunnel 2 will be two-way traffic, and Iriyama Tunnel 1 will be one-way traffic, just as before the construction.<\/p>\n\n<h3 style=\"margin:30px 0 10px; padding:8px 12px; background:#f5f5f5; border-left:4px solid #333; font-size:16px;\">Current restrictions (until 3 PM on April 24th)<\/h3>\n\n<ul style=\"margin:0 0 20px; padding-left:20px;\">\n<li>Shiniriyama Tunnel:<strong>Road Closed<\/strong><\/li>\n<li>Iriyama Tunnel \u2460 and \u2461:<strong>One-way alternating traffic all day.<\/strong>(Including Saturdays, Sundays, and public holidays)<\/li>\n<\/ul>\n\n<p>Traffic controllers are stationed at the site. Please follow the signs and instructions of the controllers to ensure safe passage.<\/p>\n\n<p style=\"margin-top:20px;\"><img decoding=\"async\" src=\"https:\/\/okuhida.or.jp\/wp-content\/uploads\/2026\/04\/000919076.png\" alt=\"\u4ea4\u901a\u898f\u5236\u56f3\" style=\"max-width:100%; height:auto; border:1px solid #ddd;\"><\/p>\n\n<h3 style=\"margin:30px 0 10px; padding:8px 12px; background:#f5f5f5; border-left:4px solid #333; font-size:16px;\">Project Overview<\/h3>\n\n<p>The Shin-Iriyama Tunnel construction project involves excavating and widening an existing tunnel that branches into a Y shape underground near the Nagawado Dam, and constructing a new tunnel (tunnel length L=410m).<\/p>\n\n<p style=\"margin-top:20px;\"><img decoding=\"async\" src=\"https:\/\/okuhida.or.jp\/wp-content\/uploads\/2026\/04\/000902007.png\" alt=\"\u5de5\u4e8b\u6982\u8981\u56f3\" style=\"max-width:100%; height:auto; border:1px solid #ddd;\"><\/p>\n\n<p style=\"margin-top:24px; font-size:14px;\">\u25bc For more details, please check the Nagano National Highway Office website.<br>\n<a href=\"https:\/\/www.ktr.mlit.go.jp\/nagano\/nagano00517.html\" target=\"_blank\" rel=\"noopener\" style=\"color:#06c;\">Status of construction on the Shin-Iriyama Tunnel, part of the Nagawado Improvement Project on National Route 158 (Ministry of Land, Infrastructure, Transport and Tourism)<\/a><\/p>\n\n<p style=\"margin-top:8px; font-size:13px; color:#888;\">*Please note that the schedule may change depending on the progress of the construction work.<\/p>\n\n<\/div>\n<\/body>\n<\/html>","protected":false},"featured_media":12709,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"topics_cat":[111],"class_list":["post-14473","topics","type-topics","status-publish","has-post-thumbnail","hentry","topics_cat-111"],"acf":[],"_links":{"self":[{"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/topics\/14473","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/types\/topics"}],"version-history":[{"count":4,"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/topics\/14473\/revisions"}],"predecessor-version":[{"id":14480,"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/topics\/14473\/revisions\/14480"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/media\/12709"}],"wp:attachment":[{"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/media?parent=14473"}],"wp:term":[{"taxonomy":"topics_cat","embeddable":true,"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/topics_cat?post=14473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":14473,"date":"2026-04-17T04:25:46","date_gmt":"2026-04-17T04:25:46","guid":{"rendered":"https:\/\/okuhida.or.jp\/?post_type=topics&p=14473"},"modified":"2026-04-17T04:38:07","modified_gmt":"2026-04-17T04:38:07","slug":"%e5%9b%bd%e9%81%93158%e5%8f%b7-%e6%96%b0%e5%85%a5%e5%b1%b1%e3%83%88%e3%83%b3%e3%83%8d%e3%83%ab%e5%b7%a5%e4%ba%8b%e3%81%ab%e4%bc%b4%e3%81%86%e4%ba%a4%e9%80%9a%e8%a6%8f%e5%88%b6%e3%81%ab%e3%81%a4","status":"publish","type":"topics","link":"https:\/\/okuhida.or.jp\/en\/p\/topics\/%e5%9b%bd%e9%81%93158%e5%8f%b7-%e6%96%b0%e5%85%a5%e5%b1%b1%e3%83%88%e3%83%b3%e3%83%8d%e3%83%ab%e5%b7%a5%e4%ba%8b%e3%81%ab%e4%bc%b4%e3%81%86%e4%ba%a4%e9%80%9a%e8%a6%8f%e5%88%b6%e3%81%ab%e3%81%a4\/","title":{"rendered":"Traffic restrictions due to construction work on the Shin-Iriyama Tunnel on National Route 158 (scheduled to be lifted on April 24th)"},"content":{"rendered":"\n\n\n\n\n\u6295\u7a3f\u30d7\u30ec\u30d3\u30e5\u30fc<\/title>\n<\/head>\n<body>\n<div style=\"max-width:780px; margin:0 auto; font-family:sans-serif; color:#333; line-height:1.8;\">\n\n<p style=\"font-size:13px; color:#888;\">Update date: April 17, 2026<\/p>\n\n<p>Traffic restrictions are in place on National Route 158 (near Nagawado Dam) due to construction work on the Shin-Iriyama Tunnel.<strong style=\"color:#c00;\">Restrictions will be lifted at 3:00 PM on Friday, April 24, 2026.<\/strong>It is scheduled to happen.<\/p>\n\n<p>After the restrictions are lifted, the Shin-Iriyama Tunnel and Iriyama Tunnel 2 will be two-way traffic, and Iriyama Tunnel 1 will be one-way traffic, just as before the construction.<\/p>\n\n<h3 style=\"margin:30px 0 10px; padding:8px 12px; background:#f5f5f5; border-left:4px solid #333; font-size:16px;\">Current restrictions (until 3 PM on April 24th)<\/h3>\n\n<ul style=\"margin:0 0 20px; padding-left:20px;\">\n<li>Shiniriyama Tunnel:<strong>Road Closed<\/strong><\/li>\n<li>Iriyama Tunnel \u2460 and \u2461:<strong>One-way alternating traffic all day.<\/strong>(Including Saturdays, Sundays, and public holidays)<\/li>\n<\/ul>\n\n<p>Traffic controllers are stationed at the site. Please follow the signs and instructions of the controllers to ensure safe passage.<\/p>\n\n<p style=\"margin-top:20px;\"><img decoding=\"async\" src=\"https:\/\/okuhida.or.jp\/wp-content\/uploads\/2026\/04\/000919076.png\" alt=\"\u4ea4\u901a\u898f\u5236\u56f3\" style=\"max-width:100%; height:auto; border:1px solid #ddd;\"><\/p>\n\n<h3 style=\"margin:30px 0 10px; padding:8px 12px; background:#f5f5f5; border-left:4px solid #333; font-size:16px;\">Project Overview<\/h3>\n\n<p>The Shin-Iriyama Tunnel construction project involves excavating and widening an existing tunnel that branches into a Y shape underground near the Nagawado Dam, and constructing a new tunnel (tunnel length L=410m).<\/p>\n\n<p style=\"margin-top:20px;\"><img decoding=\"async\" src=\"https:\/\/okuhida.or.jp\/wp-content\/uploads\/2026\/04\/000902007.png\" alt=\"\u5de5\u4e8b\u6982\u8981\u56f3\" style=\"max-width:100%; height:auto; border:1px solid #ddd;\"><\/p>\n\n<p style=\"margin-top:24px; font-size:14px;\">\u25bc For more details, please check the Nagano National Highway Office website.<br>\n<a href=\"https:\/\/www.ktr.mlit.go.jp\/nagano\/nagano00517.html\" target=\"_blank\" rel=\"noopener\" style=\"color:#06c;\">Status of construction on the Shin-Iriyama Tunnel, part of the Nagawado Improvement Project on National Route 158 (Ministry of Land, Infrastructure, Transport and Tourism)<\/a><\/p>\n\n<p style=\"margin-top:8px; font-size:13px; color:#888;\">*Please note that the schedule may change depending on the progress of the construction work.<\/p>\n\n<\/div>\n<\/body>\n<\/html>","protected":false},"featured_media":12709,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"topics_cat":[111],"class_list":["post-14473","topics","type-topics","status-publish","has-post-thumbnail","hentry","topics_cat-111"],"acf":[],"_links":{"self":[{"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/topics\/14473","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/types\/topics"}],"version-history":[{"count":4,"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/topics\/14473\/revisions"}],"predecessor-version":[{"id":14480,"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/topics\/14473\/revisions\/14480"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/media\/12709"}],"wp:attachment":[{"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/media?parent=14473"}],"wp:term":[{"taxonomy":"topics_cat","embeddable":true,"href":"https:\/\/okuhida.or.jp\/en\/wp-json\/wp\/v2\/topics_cat?post=14473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}