as rapid motor transit from one area of the City to another. In addi-
tion to the twin tunnels under the Patapsco River, which are 1.7 miles
in length, it has approximately 18 miles of access roads and approaches
usable only by Tunnel patrons. These access roads, in addition to con-
necting with principal traffic arteries in the City, provide a link
between such through routes as U. S. 40 North and U. S. 40 West, the
Washington Expressway, and immediate connections to U.S. I North
and South, and to U. S. 301 South.

Revenue and Expenditure Budget

Fiscal Year Ending September 30, 1959
Revenue Budget:

Toll Income - - $12,800,000
Investment and Miscellaneous Income 514,000
From Construction Fund for Term Bond Interest 625,336

Total - $13,939,336

Expenditure Budget:

Susquehanna River Toll Bridge $ 297,000
Potomac River Toll Bridge 184,000
Chesapeake Bay Toll Bridge 443,000
Patapsco Tunnel - - 1,293,600
Administrative and General - _ - 265,500
Patapsco Tunnel Northern Approach Extension 101,909
Bridge and Tunnel Revenue Bond Interest 4,658,170

Total - - $ 7,243,079
Remainder Available for Sinking Fund Purposes $ 6,696,257

BUREAU OF CONTROL SURVEYS AND MAPS
Advisory Board

Charles Looney, Department of Civil Engineering, University
of Maryland; Albert P. Backhaus, Director, Department of
Public Improvements; James J. O'Donnell, Director, State
Planning Department; Norman M. Pritchett, Chief Engineer,
State Roads Commission; Joseph T. Singewald, Director,
Department of Geology, Mines and Water Resources.
George W. Cassell, Engineer-in-Charge

300 W. Preston Street, Baltimore I Telephone: Vernon 7-9000

The Bureau of Control Surveys and Maps, established by the General
Assembly of 1939 but inactive during World War II, was reactivated
by the State Roads Commission in 1961. This Bureau is directed by an
advisory board consisting of the Chief Engineer of the State Roads .
Commission, the Director of the Maryland State Planning Department,
the Director of the Department of Public Improvements, the Director
of the Department of Geology, Mines and Water Resources, and the
Dean of the College of Engineering of the University of Maryland.
The agency coordinates the activities of the various agencies engaged
in mapping and surveying in the State; promotes the use of the Mary-
land Plane Coordinate System for engineering projects; through field
observations, extends the control network for use in highway surveys;
and maintains a complete file of control, both horizontal and vertical,
available throughout the State (Code 1957, Art. 91, sees. 30-36). The
funds for the operation of the Bureau are provided in the budget of
the State Roads Commission.