Callahan Tunnel

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Callahan Tunnel

The entrance to the tunnel just past I-93 Southbound Exit 24B to Logan Airport.
Overview
Location	Boston, Massachusetts
Status	Open
Route	Route 1A north
Start	Downtown Boston
End	East Boston
Operation
Constructed	high-strength steel and concrete infill
Opened	November 11, 1961; 62 years ago (November 11, 1961)
Owner	Commonwealth of Massachusetts
Operator	Massachusetts Department of Transportation
Toll	Between $0.20 and $2.05 depending on payment method and residency
Technical
Length	0.96 mi (1.54 km)
No. of lanes	2
Operating speed	40 mph (64 km/h)
Tunnel clearance	13.4 ft (4.1 m)[1]
Width	24.2 ft (7.4 m)[1]

The Lieutenant William F. Callahan Jr. Tunnel (colloquially Callahan Tunnel) is one of four tunnels, and one of three road tunnels, beneath Boston Harbor in Boston, Massachusetts. It carries motor vehicles from the North End to Logan International Airport and Route 1A in East Boston. Ordinarily, this tunnel is only used to carry traffic out of the city, and with the completion of the Big Dig it only collects traffic from I-93 southbound (right after traffic merges from Storrow Drive) and downtown Boston; northbound traffic uses the Ted Williams Tunnel. As of 2016, a toll of $1.50 is charged for non-commercial two-axle vehicles with a Massachusetts E-ZPass, while non-Massachusetts E-ZPass holders are charged $1.75. Vehicles without E-ZPass are charged $2.05 through MassDOT's Pay By Plate MA program. For residents of certain Boston ZIP codes, a discount is in effect using an E-ZPass transponder, costing $0.20.