Front:
A TUNNEL
ILLUSTRATIONS OF THE
ST CLAIR
TUNNEL CH.
THE ST. CLAIR
1308
ST CLAR TAME
12.05
1308
ST CLAIR
TUNNEL C
1307
1305
ELECTRIC OPERATIONS OF
TUNNEL.
2372
Back:
THE ST. CLAIR TUNNEL
Under the St. Clair River
BETWEEN
PORT HURON, Mich., U.S.A., and SARNIA, Ont., Can.
GRAND TRUNK RAILWAY SYSTEM.
One of the longest submarine tunnels in the world.
Including approaches it is more than two miles long.
Length of tunnel proper 6,025 feet.
Nineteen feet ten inches in diameter.
Work commenced, September, 1888.
Opened for freight traffic in October, 1891.
Opened for passenger traffic, December, 7th, 1891.
Steam engines formerly used weighed 200,000 pounds.
These engines were the largest in the world when built.
Original cost of tunnel $2.700,000.
Tunnel now operated by electricity.
Cost over half a million dollars for its electrification.
Length of zone electrified approximately 4 miles
Maximum grade two per cent.
No. of units per electric locomotive, two.
Weight of complete electric locomotive, 135 tons.
Normal motor capacity 1,500 horse power.
Normal drawbar pull of electric locomotive, 50,000 pounds.
Maximum speed of electric locomotive per hour, 35 miles.
Electrical system adopted-single phase.
Type of construction-single catenery supported by structural
steel bridges.
Normal voltage, 3,300 volts.
Tunnel lighted throughout by hundreds of electric lights.
The train service operated through the St. Clair Tunnel is the
heaviest railway service handled by electricity in the world.
The St. Clair Tunnel has been operated by electricity since May,
17th, 1908.
The annual tonnage of vessels passing through the St. Clair River
which flows over the St. Clair Tunnel is about twice as great as
that passing through the Suez Canal.
British
Manufacture
