Agenda - Council - 07/14/1992 - Laserfiche WebLink

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:I i CASE # SPEED LIMIT FOR ROANOKE STREET N.W. BETWEEN II~,3R'~ AVENUE N.W. AND JUNIPER RIDGE DRIVE N.W. By: Steven Jankowski, City Engineer Background: Earlier this sp~ing,~City Staff received a request from a citizen to review the speed limit along Roanoke Srr~q't N.~N'. from 153rd Avenue N.W. to Juniper Ridge Drive N.W. Presently, this segment of MSA r6adway is unsigned as to speed limit. Since development along this segment is not suffieienti~ d~se to qualify it as an urbanized district as defined by State Statute Section 169.14 (5b), th~ letlal speed limit is 55 mph. State law requires that all speed limits other than 30 mph in urban[ ar¢ls and 55 mph in rural locations be determined by the Commissioner of Transportatiqni:foll~,wing an engineering study. The City Council adopted a resolution requesting such a study, o~Ma~t 26, 1992. Mn/DOT has completed this study and has authorized a speed limit of 40 mph on t,.his segment of roadway. The authorizing letter is enclosed. Observations: The engineCrin s~dy to determine appropriate speed limits is based upon a number of factors including sight '~istimces and ball bank measurements around curves. However, the speed survey is the greate~ f :to~. in determining appropriate speed. Generally, an appropriate speed limit is one at which 85% ~ ~m6torists will travel. The enclosed field speed survey sheet shows that the 85th percentile's~ lo, this segment of roadway falls between 43 and 45 mph. Therefore, the 40 mph speed limit autt~ ~riz~tion appears to be a reasonable limit. Recommend~l:ion: [ I would recommend acceptance of the Mn/DOT speed authorization and ordering the posting of appropriate stg~llng.! Council Actign. , Motion to adoPi Re{olution g92-07-~ accepting the Mn/DOT speed authorization for Roanoke Street N.W. be~vee~a 153rd Avenue N.W. and Juniper Ridge Drive N.W. and ordering the posting of appropriate .q ignihg. Reviewed By, City Administraior City Engineer City Attorney CC:07/14/92