MILWAUKEE METHODS OF DETERMINING AND CONTROLLING LENGTHS OF BLOCKS AND INTERSECTIONS

A DEFINITE NEED FOR A POSITIVE, YET FLEXIBLE, CONTROL SECTION PROCEDURE FOR RECORDING THE LENGTHS OF PAVEMENTS ON CITY STREETS PROMPTED THE CITY OF MILWAUKEE TO INITIATE SUCH A STUDY IN CONNECTION WITH ITS DEVELOPMENT OF A SIMPLIFIED AND SYSTEMATIC METHOD OF INVENTORYING ITS PRESENT STREET SYSTEM. AS A RESULT METHODS WHICH ARE BELIEVED TO BE NEW IN CONCEPT AND SCOPE HAVE BEEN DEVELOPED FOR DETERMINING, CONTROLLING, COMPUTING, AND RECORDING LENGTHS OF BLOCKS AND INTERSECTIONS. BEFORE ASSEMBLING DATA PERTAINING TO CONSTRUCTION FEATURES FOR EXISTING STREETS, AND HISTORICAL DATA RELATING TO PAST CONSTRUCTION AND RETIREMENT EXPERIENCE, IT WAS NECESARY TO SELECT A METHOD TO DIVIDE THE ENTIRE STREET SYSTEM OF APPROXIMATELY 824 MILES INTO SMALL, USABLE, BASIC UNITS. THE "BLOCK AND INTERSECTION METHOD," IN WHICH EACH BLOCK AND EACH INTERSECTION CONSTITUTES A UNIT, WAS ADOPTED AS THE MOST SUITABLE. THE DEVELOPMENT OF THIS METHOD OF CONTROL SECTIONS AND ITS APPLICATION TO THE PECULIARITIES OF MODERN, CITY STREET PATTERNS IS CLOSELY LINKED TO THE DEVELOPMENT OF LENGTH CONTROL PROCEDURES, AND BOTH ARE PRESENTED TOGETHER IN THIS DISCUSSION. TWO NEW DESCRITPIVE TERMS ARE INTRODUCED, "THROUGH LENGTH" AND "ADD LENGTH." AS APPLIED TO A BLOCK, THE THROUGH LENGTH IS THE OVERALL LENGTH OF THE BLOCK, THAT IS, THE AVERAGE DISTANCE BETWEEN THE EXTENDED PROPERTY LINES OF INTERSECTIONSAT EITHER END OF THE BLOCK. INTERSECTIONS HAVE A SIMILAR THROUGH LENGTH, FROM PROPERTY LINE TO PROPERTY LINE EXTENDED; AND AN ADDITIONAL ADD LENGTH, THE DISTANCE FROM THE PROPERTY LINE TO CURB LINE (ROADWAY LINE EXTENDED). WHILE A BLOCK ALWAYS HAS ONLY ONE THROUGH LENGTH AND NO ADD LENGTH, AN INTERSECTION MAY HAVE TWO OR MORE THROUGH AND ADD LENGTHS DEPENDING UPON THE NUMBER OF STREETS INVOLVED IN THE FORMATION OF THE INTERSECTION. PROCEDURES FOR DELIMITING INTERSECTIONS AND METHODS OF DETERMINING AND COMPUTING THE PROPER THROUGH AND ADD LENGTHS POSE AN INTERESTING PROBLEM WHEN APPLIED TO THE FOLLOWING VARIETY OF INTERESTIONS: (A) STANDARD, TWO STREETS INTERSECTING AT A COMMON POINT AND BOTH EXTENDING BEYOND THE COMMON INTERSECTION FORMED; (B) DEADEND, TWO STREETS INTERSECTING AT A COMMON POINT BUT ONLY ONE EXTENDING BEYOND THE COMMON INTERSECTION FORMED; (C) OFFSET, TWO-STREETS NOT INETERSECTING AT A COMMON POINT BUT WITH BOTH EXTENDING BEYOND THE TWO INTERSECTIONS FORMED; (D) MULTIPLE, THREE OR MORE STREETS INTERSECTIN TO FORM A COMMON INTERSECTION; (E) SPECIAL OR MISCELLANEOUS, INTERSECTIONS WHICH DO NOT CONFORM TO ANY OF THE PREVIOUSLY EXPLAINED GROUPS. /AUTHOR/

  • Supplemental Notes:
    • Vol 26, pp 1-13, 22 FIG
  • Authors:
    • Gamble, R W
  • Publication Date: 1947

Media Info

  • Monograph Title: Proceedings of the Twenty-Sixth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 5-8, 1946
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00225986
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: May 29 1972 12:00AM