2023-10-11 City Council Packet - Laserfiche WebLink

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Page 2 With this layout, it is expected that there will be days in-betweenvariouswork activities in which the road could beopenedfor two way traffic(i.e. whileconcrete is curing). With this option, it would be necessaryto widen certain portionsof the trail corridor to prepare it for recreational vehicletraffic. The additional traffic control costs for this alternative are estimated as follows: Option 1 - Utilize Trail Corridor with Flaggers Estimated DescriptionUnitQuantityUnit CostExtension Flaggers - 2 workers x 17 days Hours340$90$30,600 Prepare Trail Corridor for Vehicle TrafficLump Sum1$10,000$10,000 Crew Time to Close Road at Beginning of Each Working DayHours17$600$10,200 Crew Time to Re-Open Park Road at End of Each Working DayHours17$600$10,200 Total Estimated Additional Cost - Option 1$61,000 Option 2. Option 2 consists of requesting permission from the City of Centerville to utilize Mound Trail as a Detour Route. If this alternative is utilized, the Detour Route wouldonly be utilized during the reconstruction of the park entrance road, from Main Street to the campground road. This option would requiresome grading at the south end of Mound Trail to remove the “hill”and would also require that temporary gravel is placed on the temporary road connection. The additionaltraffic control costs for this alternative are estimated as follows: Option 2 - Utilize Mound Trail for Detour Route Estimated DescriptionUnitQuantityUnit CostExtension Grading to Remove "Hill" and Prepare SubgradeLump Sum1$6,000$6,000 Aggregate Base for Temporary RoadTon140$30$4,200 Additional "Detour" SignageLump Sum1$800$800 Total Estimated Additional Cost - Option 2$11,000 The above costs are estimates of the “additional traffic control”costs only that are associated with the reconstruction for each alternativeforthe 3,800 foot segment of park entrance road, and do not representthe estimated total cost of traffic control for the entire project. It is our opinion that Option 2 would be preferrable to park visitors, particularly visitorsof the campground and/orboatlaunch that may be operating recreational vehiclessuch asmotorhomes, pull behind camper trailers, andvehicle and boat trailer combinations.