Width of each tunnel roadway
21 feet 6 inches
Operating headroom 13 feet
External diameter of tunnel 31 feet
Maximum depth from mean high water to roadway 97 feet
Length of tunnel:
North tube 7,482 feet
Center tube 8,216 feet
South tube 8,006 feet
Opened to traffic: North tube Feb. 1, 1945
Center tube Dec. 22, 1937
South tube May 25,1957
Number of Toll Lanes 13
Cost of Original Structure $75,000,000
PA investment as of December 31, 2008: $888,957,000
2008 Traffic Volumes
Total Eastbound Traffic: 20,937,000 vehicles
Total Traffic (Both Directions): 41,874,000 vehicles
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