Kumeji Bridge

Kumejibashi: A Historic Bridge Over the Sai River Gorge

Nestled deep within the Kumeji Gorge along the middle reaches of the Sai River in Nagano City, Kumejibashi (久米路橋) is a graceful reinforced concrete arch bridge that has been watching over travelers since 1933. Celebrated in the Nagano prefectural anthem "Shinano no Kuni" with the verse "cross with care the Kumeji Bridge," this bridge stands as both an engineering achievement of the early Shōwa era and a living connection to centuries of history, legend, and literary tradition. In 2021, it was registered as a National Registered Tangible Cultural Property, recognizing its architectural craftsmanship and contribution to the scenic beauty of the gorge.

Historical Background

The history of bridges at this location stretches back centuries. The earliest recorded bridge here, known as the Minochi Bridge (水内橋), appears in a fundraising document dated 1611 (Keichō 16), though tradition holds that bridges were built at this narrow crossing long before that. According to legend, the site may trace its origins to the bridges constructed by Michiko no Takumi (路子工), a skilled engineer of Baekje origin, during the reign of Empress Suiko around 612 CE.

The current bridge was completed in 1933 (Shōwa 8) as a modern reinforced concrete structure replacing earlier wooden bridges that were repeatedly destroyed by the powerful currents of the Sai River. Its construction marked a turning point in making this treacherous crossing safe for the people of Shinano.

In 1899, the poet Asai Kiyoshi visited this site and was so moved by its dramatic scenery that he included the bridge in the fourth verse of "Shinano no Kuni," the beloved prefectural anthem of Nagano composed the following year. The bridge also attracted the attention of Katsu Kaishū, the renowned Bakumatsu-era statesman, whose poetry stele stands at the foot of the bridge today.

Why Kumejibashi Is a Registered Cultural Property

Kumejibashi was registered as a National Registered Tangible Cultural Property (Building) on October 14, 2021. The bridge is valued for several reasons. It is a single-span open-spandrel reinforced concrete arch bridge with a total length of 46 meters and a width of 6.5 meters, featuring a notably flat arch profile. The arch ribs and other structural elements are clad in teppei-seki (iron-flat stone), a distinctive layered stone native to Nagano Prefecture, giving the bridge a refined, natural appearance. The haunches at the ends of the vertical members are finished with elegant curved surfaces, demonstrating the high level of craftsmanship that went into its construction. Beyond its engineering merits, the bridge plays a vital role in shaping the scenic landscape of Kumeji Gorge.

The Legend of "Kiji mo Nakazuba" — The Pheasant That Should Not Have Cried

One of Japan's most poignant folk tales is set at this very bridge. Long ago, a poor farmer's wife was swept away by a flood of the Sai River, leaving behind a sickly young daughter named Chiyo. Desperate to nourish her, the farmer stole red beans and glutinous rice to make sekihan (celebratory red rice). But little Chiyo innocently sang about her meal in a temari song, and the theft was discovered. As punishment, the farmer was taken as a human sacrifice — a hitobashira — to appease the river god so that the perpetually collapsing Kumeji Bridge might finally stand.

Chiyo fell silent and never spoke again. Years later, she found a pheasant that had been shot by a hunter. Cradling the bird, she whispered: "If only you hadn't cried out, you would not have been shot." Then she disappeared, never to be seen again. This tale gave rise to the Japanese proverb "Kiji mo nakazuba utaremai" — the pheasant would not have been shot had it not cried — a lesson that careless words can bring disaster.

Highlights and Things to See

The Bridge Itself

The elegant arch of Kumejibashi spans the narrowest point of the Sai River's middle reaches. The stone-clad arch ribs blend harmoniously with the rocky gorge walls, making the bridge appear almost as if it grew from the landscape itself. The view from the bridge offers a stunning panorama of the emerald-green waters of the Sai River below and the steep rock faces on either side.

Kumeji Gorge (久米路峡)

Designated as a Nagano Prefectural Scenic Site, Kumeji Gorge is formed from volcanic andesite breccia dating back approximately 4.2 million years. These rocks, harder than the surrounding strata, resisted the erosion of the Sai River and created a winding, dramatic canyon. The gorge is beautiful in all seasons — cherry blossoms in spring, lush green in summer, vivid autumn foliage, and snow-dusted cliffs in winter, all reflected in the calm waters below.

Poetry Steles

At the foot of the bridge stand poetry steles including one bearing a poem by Katsu Kaishū, the celebrated naval minister who helped negotiate the bloodless surrender of Edo Castle. Another stele references the Shūi Wakashū, a Heian-period imperial poetry anthology that includes a verse about this ancient crossing.

Izumi Kotarō Statue

Near the gorge stands a statue of Izumi Kotarō, the legendary figure who, riding on the back of his dragon mother, is said to have drained the great lake that once covered the Azumino plain, carving out the course of the Sai River and creating fertile farmland for the people of Shinano.

Surrounding Area

The Shinshū Shimmachi area surrounding Kumejibashi offers a distinctive rural experience. The district is known for its unique jingisukan (Genghis Khan-style grilled lamb) culture, with several restaurants serving locally marinated mutton. The Michi-no-Eki Shinshū Shimmachi roadside station along National Route 19 offers local produce, fresh vegetables, and soba noodles. In June, the nearby Ajisai Kaidō (Hydrangea Road) features thousands of blooming hydrangeas along the riverbank. The area also offers excursion boat rides on the Sai River, passing beneath the bridge and through the gorge for a memorable perspective of the landscape.