Anton Anderson Memorial Tunnel: Where Trains and Cars Share a Narrow, 2.5-Mile Tunnel
Anton Anderson Memorial Tunnel is located in the U.S. state of Alaska. It passes under Maynard Mountain and carries the scenic Portage Glacier Road. Also known as the Whittier Tunnel, it is the longest combined vehicle-railroad tunnel in North America. The tunnel is a single-lane, multi-use tunnel shared by cars and trains traveling in both directions.
How long is Anton Anderson Memorial Tunnel?
The tunnel is 2.5 miles (4 km) long and just 16 feet wide.
When was Anton Anderson Memorial Tunnel built?
The tunnel was built in 1943 as a modern engineering feat to connect the area and support both rail and vehicular traffic.
How is traffic managed in Anton Anderson Memorial Tunnel?
Traffic through the tunnel is regulated by an advanced computerized control system to safely manage the alternating flow of trains and vehicles.
What is the structure of Anton Anderson Memorial Tunnel?
The floor is made of 1,800 texturized concrete panels, with railroad tracks sunken slightly below the road surface to allow vehicles to pass safely.
What are the restrictions for vehicles in Anton Anderson Memorial Tunnel?
Dangerous and objectionable materials are not allowed. Convertible vehicles must keep their tops up while driving through the tunnel.
When is Anton Anderson Memorial Tunnel open?
- Summer hours: 5:30 a.m. to 11:15 p.m.
- Winter hours:
- Sunday: 8:30 a.m. to 6:15 p.m.
- Monday through Thursday: 8:40 a.m. to 5:30 p.m.
- Friday: 8:30 a.m. to 6:45 p.m.
- Saturday: 8:30 a.m. to 5:30 a.m.
Why is Anton Anderson Memorial Tunnel important?
It provides the only road access to the town of Whittier, Alaska, which is otherwise reachable only by boat or train. The tunnel supports both rail freight and passenger vehicles, making it critical for local residents and commerce.
How long does it take to drive through Anton Anderson Memorial Tunnel?
Due to controlled, alternating traffic, the drive through the tunnel takes about 15 minutes, but waiting times can vary depending on the schedule and traffic.
What safety features does Anton Anderson Memorial Tunnel have?
The tunnel is equipped with ventilation systems to manage exhaust fumes and ensure air quality, along with emergency communication systems and lighting designed for the long, dark tunnel.
Can pedestrians or bicycles use Anton Anderson Memorial Tunnel?
No, the tunnel is restricted to motor vehicles and trains only. Pedestrians and bicycles are not permitted due to safety concerns.