Detroit–Windsor Tunnel

DetroitUnited States of America 42° N · 83° W Verified Oct 2026

The Detroit–Windsor Tunnel is an iconic international highway tunnel that connects Detroit, Michigan, in the United States, with Windsor, Ontario, in Canada.

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Detroit–Windsor Tunnel
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Introduction

The Detroit–Windsor Tunnel is an international highway tunnel connecting Detroit, Michigan, in the United States, with Windsor, Ontario, in Canada. Opened in 1930, it spans 5,160 feet and reaches a depth of 75 feet below the Detroit River. It is both a route for vehicular traffic and an example of early 20th-century engineering (Wikipedia).

It was the third underwater vehicular tunnel constructed in the United States, after the Holland Tunnel and the Posey Tube. The project cost approximately $25 million, equivalent to around $363 million in today’s dollars, and used pioneering construction techniques including the immersed tube method (Medium).

History of the Detroit–Windsor Tunnel

Construction and Engineering Feats

Construction began in the summer of 1928. The project was led by the engineering firm Parsons, Klapp, Brinckerhoff, and Douglas, which was also responsible for the Holland Tunnel between Jersey City, New Jersey, and Manhattan, New York. Burnside A. Value was the executive engineer; Norwegian-American engineer Søren Anton Thoresen was the engineer of design; and Ole Singstad consulted on and designed the ventilation system (Wikipedia).

Three construction methods were used. The approaches were built using cut-and-cover, and the hand-bored sections were made using a tunneling shield. For the river section, steam-powered dredgers dug a trench in the riverbed. Nine tubes, each 250 feet long and 35 feet in diameter, were placed in the trench and covered with 4 to 20 feet of mud (Wikipedia).

Opening and Early Years

The opening ceremony took place two days before the tunnel officially opened to car traffic on November 3, 1930, at 12:05 am. Windsor Mayor Frederick Jackson said the tunnel allowed people to “pass from one great country to the other in the short space of three minutes.” Detroit Mayor Frank Murphy described it as a symbol of “peace, friendship, and the brotherhood of man.” The first passenger car to travel through the tunnel was a 1929 Studebaker (Medium).

Economic and Strategic Importance

The tunnel initially helped move components for the automotive industry, contributing to economic growth in both cities. During World War II, it served as a transportation link for military personnel and supplies (DWTunnel).

A 2004 Border Transportation Partnership study found that 150,000 regional jobs and $13 billion in annual production depended on the Windsor-Detroit international border crossing (Wikipedia). Traffic and profits declined between 2008 and 2012, followed by a modest recovery in recent years (Wikipedia).

What to See

Traveling through the tunnel offers the experience of crossing between two countries underwater. Its construction and ventilation system are among its notable engineering features.

Technological Innovations

Designed by Ole Singstad, the ventilation system uses three main levels. The bottom level brings in fresh air under pressure and forces it into the middle level, where the traffic lanes are located. Vehicle exhaust is pushed into the third level and vented at each end of the tunnel (Wikipedia).

Visitor Information

Visiting Hours and Tickets

The tunnel is open 24 hours a day, seven days a week. It is cashless and accepts all major credit cards and Nexpress® toll passes (DWTunnel). Fares vary by vehicle type. Check the official website for updates to operating hours or temporary closures.

Accessibility

The tunnel is accessible to regular vehicles and commercial trucks. Restrictions apply to hazardous materials, so check the tunnel’s guidelines before travelling.

Special Events and Tours

The tunnel occasionally hosts special events and guided tours. During the 2024 NFL Draft, it was scheduled to remain open to support travel for attendees (Fox2Detroit). Check the official website for upcoming events and tour schedules.

Travel Tips

  • Peak hours Avoid morning and evening rush hours to minimize delays.
  • Documentation Bring necessary travel documents, including passports and any required visas.
  • Real-time updates Use the tunnel’s live camera feature on its website to check current traffic conditions.

For the latest updates and travel tips, download the Audiala mobile app and follow the organization on social media.

Nearby Attractions

Detroit Historical Sites

  • The Henry Ford Museum A museum showcasing American innovation and history.
  • Detroit Institute of Arts An art collection featuring works from around the world.
  • Belle Isle Park An island park with views of the Detroit skyline and outdoor activities.

Windsor Attractions

  • Caesars Windsor A casino and entertainment complex offering gaming, shows, and fine dining.
  • Odette Sculpture Park An open-air museum with over 30 large-scale sculptures along the Windsor riverfront.
  • Windsor’s Little Italy A neighbourhood known for Italian cuisine and culture.

FAQ

What are the Detroit–Windsor Tunnel visiting hours?

The tunnel is open 24 hours a day, seven days a week.

How much are the tickets for the Detroit–Windsor Tunnel?

The tunnel is cashless and accepts all major credit cards and Nexpress® toll passes. The fare varies depending on the vehicle type.

Are there any travel restrictions?

Restrictions apply to hazardous materials. Check the tunnel’s guidelines before travelling.

What are some nearby attractions?

In Detroit, visit the Henry Ford Museum, Detroit Institute of Arts, and Belle Isle Park. In Windsor, explore Caesars Windsor, Odette Sculpture Park, and Windsor’s Little Italy.

Tickets & tours.

These are guided options from our partners — same price as booking direct.

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