Boston's Mayor Curley visited Chicago and decided to replicate the traffic patterns that he saw there. This included the widening of Cross st. to provide better access to the Sumner Tunnel. The idea was to improve traffic in Boston, especially with the increasing use of private cars over public transportation.
In a 1931 Boston Globe article, Mayor Curley said "I am more convinced than ever that Boston's only hope to relieve downtown congestion is by a system of through streets and highway extension of arterial highways. Our salvation would be to widen Cross st. through Haymarket Sq. through State st, thereby opening up a new thoroughfare to Atlantic av, and to gradually inaugurate a system of through streets as they have here".
This article also says that the widening had been planned by the Boston City planning board since 1899. It didn't pass in legislature in 1930, so they will have to try again in 1932. Mayor Curley said he felt that it would definitely pass in 1932. And it did pass, leading to buildings in the way being torn down starting in 1933.
This picture is from a 1933 Boston Globe article about the plan to demolish buildings on North and Cross st. It shows the entrance for the new Sumner Tunnel on Cross st. The maps below, show the before and after of these streets. (Both maps show the exact same location).
This picture is from before the buildings were taken down. The Police Patrol Station 1 pictured here, was then moved next to the Sumner Tunnel entrance (Bromley Map, 1938). It was described as being one of the oldest buildings to be taken down.
This 1933 picture shows the work of demolishing buildings along North St.
Both Cross and North streets were expanded from about 20 to 100 feet wide.
A "To Let" sign can be seen on a building on the right indicating a changing area.
After all of the buildings had been removed, construction could begin on the tunnel. Construction was a difficult process involving carefully clearing away earth and laying granite blocks and supports. The tunnel goes under Boston Harbor and connects East Boston to the North End. It was officially opened in 1934 (Boston Globe, 1933).
These are views of Cross and Hanover Streets after the street widening and tunnel construction. Compared to the older pictures on the previous pages, these streets are almost unrecognizable. And the amount traffic has clearly increased in these areas. The tunnel acted as an important central traffic system from the North End to East Boston.
View of Hanover St. from Cross St.
At the corner of Hanover and Cross St.
Traffic entering Sumner Tunnel
Entrance to Sumner Tunnnel