As of March 31, 2023, Japan counted a record of approximately thousand road tunnels, increasing from around **** thousand in 2014. Most tunnels measured between 100 and 500 meters.
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MLIT (Japan). (March 31, 2025). Number of road tunnels in Japan from 2014 to 2023 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 20, 2026, from /statistics/1230475/japan-tunnel-number/
MLIT (Japan). "Number of road tunnels in Japan from 2014 to 2023." Chart. March 31, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 20, 2026. /statistics/1230475/japan-tunnel-number/
MLIT (Japan). (2025). Number of road tunnels in Japan from 2014 to 2023. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 20, 2026. /statistics/1230475/japan-tunnel-number/
MLIT (Japan). "Number of Road Tunnels in Japan from 2014 to 2023." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 31 Mar 2025, /statistics/1230475/japan-tunnel-number/
MLIT (Japan), Number of road tunnels in Japan from 2014 to 2023 ÌÇÐÄÆƽâ°æ, /statistics/1230475/japan-tunnel-number/ (last visited July 20, 2026)
Number of road tunnels in Japan from 2014 to 2023 [Graph], MLIT (Japan), March 31, 2025. [Online]. Available: /statistics/1230475/japan-tunnel-number/
