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Fort McHenry Tunnel

Coordinates: 39°15′39.2″N 76°34′36.3″W / 39.260889°N 76.576750°W / 39.260889; -76.576750
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Fort McHenry Tunnel
Southbound tunnel, Bore 2
Overview
LocationBaltimore Harbor
Coordinates39°15′39.2″N 76°34′36.3″W / 39.260889°N 76.576750°W / 39.260889; -76.576750
Route I-95
StartLocust Point
EndCanton
Operation
Constructed1980-1985
OpenedNovember 23, 1985; 38 years ago (1985-11-23)
OwnerMaryland Transportation Authority
TrafficAutomotive
CharacterHighway
Toll$4.00
Vehicles per day115,000
Technical
Length1.5 miles (2.4 km)
No. of lanes8 lanes in 4 tubes
Operating speed55 miles per hour (89 km/h)
Lowest elevation107 feet (33 m) below harbor water surface
Tunnel clearance13.6 feet (4.1 m)
Width26 feet (7.9 m)
Route map
Route map of the Fort McHenry Tunnel
Route map of the Fort McHenry Tunnel

The Fort McHenry Tunnel is a four-tube, bi-directional tunnel that carries traffic on Interstate 95 underneath the Baltimore Harbor. The lowest point in the Interstate System under water, the tunnel is named for nearby Fort McHenry.

The tunnel, which opened on November 23, 1985, closed a gap in I-95 between Maine and Florida.[1] At the time of its opening it was the most expensive underwater tunnel project in the United States, but that figure has since been surpassed by the Big Dig project in Boston.[2]

The Fort McHenry Tunnel was constructed from May 1980 to November 1985, at a cost of about $750 million. The tunnel's annual traffic in 2009 was 43.4 million vehicles. As of July 1, 2015, the toll rate for cars is $4.00 cash or $3.00 E-ZPass, paid in either direction. Vehicles with more than two axles pay additional amounts, up to $30.00 for six axles.[3]

Location

Northbound trip through tunnel
(View in high quality)

The tunnel crosses the Patapsco River, just south of Fort McHenry and connects the Locust Point and Canton areas of Baltimore City.

Design and construction

View of entrance to tunnel

The Fort McHenry Tunnel was opened on time and under its budget, and it continues to be a vital transportation link in the Mid-Atlantic region. Soon after the Fort McHenry Tunnel opened, the nearby Baltimore Harbor Tunnel, which had opened to traffic in 1957, was extensively rehabilitated.

See also

References