03-09-2015 Council Packet - Laserfiche WebLink

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MINUTES OF THE ORONO CITY COUNCIL MEETING Monday,March 9,2015 7:00 o'clock p.m. (LMCD REPORTBIG ISLAND REPORT—GABRIEL JABBOUR,REPRESENTATIVE, conNnued) Jabbour indicated another item he would like the LMCD Board to look at is the milfoil harvesting. Jabbour noted money for the initial harvesters were donated but that the LMCD is now replacing them at hundreds of thousands of dollars. Jabbour stated with a number of bays now being treated by the residents themselves,the LMCD does not need to be harvesting the milfoil. Jabbour noted the original purpose of the milfoil harvesting was only to harvest navigable water and not all the bays. McMillan stated she appreciates the work being done by Mr.Jabbour. PLANNING COMMISSION COMMENTS—CHRISTOPHER McGRANN,REPRESENTATIVE McGrann noted on Item No. 10,the Planning Commission voted 5-0 recommending approval of the street setback variance. In addition,the Planning Commission has spent a fair amount of time amending the zoning codes that are now before the City Council. McGrann stated he will be available for questions. PRESENTATIONS 4. BOY SCOUT BRIDGE,HENNEPIN COUNTY BRIDGE ENGINEER JAMES ARCHER James Archer,Hennepin County Bridge Engineer, stated he is here tonight to provide an update on the Boy Scout bridge replacement. The bridge is located on Tonkawa Road between North Arm and Maxwell Bay and is also known as the Boy Scout Bridge. Archer displayed a map on the overhead showing the location of the bridge. CSAH 135 runs north up to County Road 84,which is Bayside Road. The existing bridge is a single-span steel girder structure with a timber deck and 3-inch bituminous overlay,which was originally constructed in the 1930s. The bridge has been determined to be structurally deficient and has narrow shoulders and is load restricted. Archer indicated a single-axle vehicle weighs approximately 23 tons and a three-axle vehicle would weigh around 36 tons. A non-posted bridge would have a 40-ton weight limit. Archer stated the bridge is load posted for 40 tons. Archer displayed pictures of the bridge and noted that the bridge also has substandard railings. The new bridge would be constructed with a concrete railing with a similar guardrail tying into it. The bridge is currently experiencing some deterioration at the beam line. Some of the design considerations include increasing the vertical clearance,widening the shoulder widths to four feet, and 12-foot driving lanes. The detour route would be north to Bayside Road. Archer noted no residents are able to access Tonkawa Road to the south of the bridge. Archer stated there are some existing utilities and overhead utilities in the area. In addition,the City has a force main in that area and Hennepin County will be coordinating with Staff on work in that area. Archer noted they have already spoken with Mr. Edwards and Mr. Gaffron about this project. Archer indicated they are still in the preliminary design phase of the project but that they are looking at constructing a single-span concrete bridge with a concrete beam section,which is similar to a concrete I-girder,but in the interests of vertical clearance, it is compressed into a rectangle. The existing Page 3 of 43