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2000_0627_packet
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Roseville City Council
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STAFF REPORT <br />Department ApprovaL• Manager Reviewed: <br />��/�,• r�- <br />� <br />Item Description: Lovel l Avenue/Minnesota Avenue Curve <br />DATE: 6/27/00 <br />ITEM NO.: F— 3 <br />Agenda Section: <br />Reports/Recommendations <br />Background: At the June 12, 200a City Council Meeting, a letter was read regarding safety concerns <br />at the intersection of Lovel l Avenue and Minnesota Avenue. This intersection was recently <br />reconstructed as part of the Dale Street Bridge proj ect. <br />For many years, The west end of Minnesota Avenue merged with the westbound TH36 off-ramp at Dale <br />Street. Current highway standards do not allow the combination of expressway off-ramps and local <br />streets. Therefore, when the Dale Street bridge was replaced last summer, the connection of Minnesota <br />Avenue to the off-ramp was removed west of Lovel l Avenue. Prior to construction, Lovel l Avenue <br />entered Minnesota Avenue at a"T" intersection. A stop sign on Lovel l Avenue gave the right-of-way to <br />vehicles using Minnesota Avenue. <br />The Dale Street project revised the Minnesota/Lovel l intersection. The "T" intersection was removed <br />and a curve installed in its place. The stop sign was removed since there is no longer an intersection. <br />The new curve was constructed to maximize the design speed within the space available. Ideally, the <br />curve would have met a 30 MPH design speed. However, due to tight site constraints, the curve only <br />meets a design speed of approximately 15 MPH. Pictures showing the curve as constructed and the <br />original letter read at the June 12, 2000 meeting are attached. <br />Staff Analysis: Curves that do not meet standards are acceptable if traffic volumes are relatively low <br />and if the curve is properly signed. When reviewing this type of situation, traffic engineers typically <br />refer to the Minnesota Manual on Uniform Traffic Control Devices (MMUTCD). This manual has been <br />adopted statewide and is based on similar manuals adopted across the nation. The manual is based on <br />ongoing study in the field of traffic engineering and is an attempt to standardize the installation of signs <br />and signals as much as possible. Such standardization is important, since most motorists do not confine <br />their travel to one jurisdiction. <br />Based on the MMUTCD and my review of the intersection, I recommend the following modifications: <br />❑ Remove the existing 30 MPH speed limit sign at 473 Minnesota Avenue -- The speed limit on all <br />non-posted streets is 30 MPH. Because the sign is fairly close to the curve, some motorists may see <br />the sign as an indication that 30 MPH is an appropriate speed for the curve. <br />❑ Add a yellow 15 MPH advisory speed plate to the exiting yellow curve warning signs -- This <br />addition would clearly inform motorists of the appropriate curve speed. <br />❑ Install landscaping to better define the curve -- As part of the Dale Street bridge proj ect, Mn/DOT <br />has committed to landscaping the project area in the spring of 2001. The plan for this project should <br />include plantings to better define the curve without obstructing any sight distances. <br />
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