"Sneaking into the undersea tunnel! Exploring behind the Tokyo Wan Aqua-Line Expressway"

~ Further public expansion, held weekly throughout the year ・ Begin reservations on December 4 (Tue)! ~

  • Corporate Top
  • Press Room
  • Press Release Kanto Regional Head Office
  • "Sneaking into the undersea tunnel! Exploring behind the Tokyo Wan Aqua-Line Expressway"
Infiltrate the undersea tunnel! Image image of the backside exploration of Tokyo Wan Aqua-Line Expressway

December 3, 2018
East Nippon Expressway Co., Ltd. Kanto Regional Head Office
Trans-Tokyo Bay Highway Co.

NEXCO EAST Kanto Regional Head Office (Saitama City, Saitama Prefecture) and Trans-Tokyo Bay Highway Co. (Shinagawa Ward, Tokyo) are normally closed. CA Tokyo Wan Aqua-Line Expressway sneaked into the undersea tunnel, emergency evacuation of the passage, or the like can visit with a guide of the exclusive guide "infiltrate the undersea tunnel! In the tunnel Tokyo Wan Aqua-Line Expressway will be held every week through the back explore" year.

2019 From Wednesday, January 16th, individuals can participate on "Tuesday" and "Wednesday", and groups (20 to 50 people) on "Thursday" and "Friday" every week. Advance reservations will start from 10:00 on December 4th (Tuesday), so we are waiting for many applications.

This expansion of the Tokyo Wan Aqua-Line Expressway is being well received by the "Aqualine Expedition" held at the "Summer Festival in Umihotaru" held in August every year. This is a part of the "bold disclosure / opening of attractive public facilities / infrastructure" promoted based on the "Supporting Tourism Vision".

Photo of Tokyo Wan Aqua-Line Expressway and Umihotaru
Tokyo Wan Aqua-Line Expressway and Umihotaru
Photo of an emergency evacuation passage in an undersea tunnel
Emergency evacuation passage in subsea tunnel

1 Exploration overview

"How did you build bridges and tunnels in the sea? , "If a traffic accident or fire occurs in the undersea tunnel, where will you escape?" "... The Tokyo Tokyo Wan Aqua-Line Expressway, which crosses Tokyo Bay with a bridge and a submarine tunnel, has many construction techniques and safety measures that are not generally known.

In this expedition, you will walk on foot from the entrance of the subsea tunnel to the emergency evacuation passage inside the tunnel. In the emergency evacuation passage, you can see evacuation facilities that you can not normally see with explanations from an exclusive guide. In addition to watching the video of the construction of the Tokyo Wan Aqua-Line Expressway you can also listen to commentary on a cutter face that has dug through a submarine tunnel and a dedicated fire engine that can pass through an emergency evacuation passage.

(Participation fee, tax included per person)
Adults (junior high school students and above) 1,000 yen / Children (3rd to 6th graders) 500 yen
* Those under the third grade of elementary school cannot participate. (Elementary school students must be accompanied by an adult.)

2 Date and reservation method

Held and pre-booked will be divided into two categories: "individual" and "group (20-50 people)".

<< Outline of date and reservation method >>
Individuals Group (20-50 people)
event date·
Number of times held
Of "Tuesday" and "Wednesday"
Once each morning and afternoon (4 times weekly)
Every Thursday and Friday
Once each morning and afternoon (4 times weekly)
Capacity (once
(For the event)
20 people 20 to 50 people
How to make a reservation
  • Reservations will be made online (first come, first served).
  • The maximum number of people that can be booked at one time is 1 to 7 people.
  • Umihotaru dedicated page on the net Please apply from "Reservation for individuals".
Infiltrate the undersea tunnel! Image image of the backside exploration of Tokyo Wan Aqua-Line Expressway
  • Reservations will be made by phone (first come, first served).
  • The same group can make reservations twice per month within the reservation period.
  • 代表者の方が、東京湾アクアライン探検事務局までご連絡ください。
    <東京湾アクアライン探検事務局>
    TEL:0438-97-5269
    営業時間:土日祝日および年末年始(12/29~1/3)を除く、平日の10時~17時
Reservation period
  • Reservations accepted for the first time (this time) is 2019 January 16, from the (water) 2019 to hold portion of the end of February, it will be accepted from December 4 (Tuesday), 10:00.
  • Reservation acceptance after the next time will start from 10:00 on the first day of the month two months before the holding month and until 12:00 the day before the holding date on a monthly basis.
    (Example) 2019 3 reservation start of the one month of May, 2019 will be from January 1 (Tuesday) 10:00.
  • Reservations accepted for the first time (this time), the 2019 from January 17 (Thursday) 2019 to hold minute of the end of September, will be accepted from December 4 (Tuesday), 10:00.
  • Reservation acceptance from the next time onward will start every half year (April-September, October-March) from 10:00 on the first day of the month four months before the first month of each half-year, and two weeks before the date of the event. We will accept until.
    (If the start date is a closed day, it will start from the next business day.)
    (Example) 2019 reservation start of October to the first half minute of the 2020 year in March, 2019 will be from June 3 (Mon) 10:00.
  • The group includes groups such as schools, workplaces or regions, or travel companies that organize trips under the Travel Business Act.
  • In addition to Saturdays, Sundays, and holidays, the day when the facility will be inspected and repaired, the day when the GW, Obon, the year-end and New Year traffic congestion period and the day when the Tokyo Wan Aqua-Line Expressway is expected to be closed due to stormy weather, etc. Will not be held.
  • The morning session is from 10:00 (set) to 11:30 (disbanded), and the afternoon session is from 14:00 (set) to 15:30 (disbanded).
  • Individuals may be able to make advance reservations for "Thursday" and "Friday", which are the dates of the group, if there is no reservation by the group. (We will inform you on the application page on the Internet from time to time.)

3 Participation conditions, etc.

  • We will have a local gathering / dissolution at Umihotaru, so please come to Umihotaru by yourself. (Transportation costs to Umihotaru will be borne by the participants.)
  • Participants must be in third grade or above. (Elementary school students must be accompanied by an adult.)
  • The tour will be on foot, so those who can walk for more than 2km and those who can climb 120 steps or more (7th floor in the building).
    • Please wear comfortable clothes and athletic shoes. You cannot participate in high heels and sandals.
    • Since this is a tour of facilities for road management, there are places that are not barrier-free. For safety reasons, we do not allow people who need assistance to move, such as wheelchairs, to participate. We apologize for the inconvenience, but please understand.
  • The explanation and guidance during the tour will be provided in Japanese in oral terms. For foreigners, for safety reasons, it is necessary to accompany a person (foreign language interpreter, sign language interpreter, etc.) who can understand the guidance of staff in the same group for safety management.
  • In addition, please check the website for details on participation conditions and precautions.

4 Homepage establishment

On the official website of Umihotaru, Infiltrate the undersea tunnel! Tokyo Wan Aqua-Line Expressway backside exploration Will open the home page of.

For more information about this expedition, including the exploration outline, application guidelines (participation conditions / notes, application or contact information), and notice of cancellation in case of emergency, please check the same page.

5 About NEXCO EAST Tour

"Sneaked into the seabed tunnel! Tokyo Wan Aqua-Line Expressway in conjunction with the start of the back side exploration", NEXCO EAST in, the Tokyo Wan Aqua-Line Expressway will release incorporates's tour the exploration of. Tokyo Wan Aqua-Line Expressway in addition to the exploration of, offers an attractive tour packages, including tourist attractions and tour spot, etc. of the peripheral.

To participate in the tour, NEXCO EAST official website `` DraPla 's Trip We will be recruiting at ", so please join us.

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