An old shield for the Sumner Tunnel, with the Masspike hat. This shield is no longer used. The Sumner Tunnel carries traffic from Logan International Airport and Route 1A in East Boston to Boston, Massachusetts's North End. Ordinarily, this tunnel is only used to carry traffic southbound and with the completion of the Big Dig, only collects traffic bound for I-93 Northbound and downtown Boston. Traffic for I-93 southbound and the Masspike (I-90) westbound is normally routed to the Ted Williams Tunnel.
The tunnel was opened in 1934. The tunnel originally carried traffic in both directions but with the opening of parallel Callahan Tunnel in 1961, the Sumner was restricted to just southbound traffic; northbound traffic flow normally uses the Callahan Tunnel. The Sumner Tunnel is named for William H. Sumner, the son of Governor Increase Sumner.
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