ADMINISTRATION - Jean M. Keely, City Engineer
Title
APPROVE AMENDMENT TO CONTRACT WITH WSB & ASSOCIATES FOR RECONSTRUCTION OF 105TH AVENUE FROM TH 65 TO RADISSON ROAD, IMPOVEMENT PROJECT NO. 14-11
Background
In October of 2014 the City executed an agreement with WSB to provide preliminary and final design services for the reconstruction of 105th Avenue from TH 65 to Radisson Road at a cost of $348,700. The consultant had completed the design plan and submitted for agency approvals in 2015. During the agency approval process the City staff received comment from properties along the corridor. The City was approached by the NSC and MAC to add features to the project. The NSC was interested in having a second roundabout added to serve their main access to the south campus and MAC requested that an east bound right hand turn lane be added to serve their property on the east end of the project. At the City’s request, WSB added these elements to the project and resubmitted for agency review and approval. As both of these were outside the original scope of the project, additional cost has been incurred in the amount of $32,000.
Early in 2017, the City was approached by a potential buyer of the Gabrelcik property located on the northwest corner of 105th Avenue and Radisson Road. The potential buyer presented the City with a proposed site plan for the parcel which included an eastbound left turn into the parcel. Council concluded that the request for the turn lane was appropriate. Staff then requested WSB to add this turn lane to the plans. The cost associated with this design change is $2,733 which was outside the original scope of the design contract.
In March of 2107, Council requested that additional design elements and associated cost be prepared for their consideration, including the addition of a traffic signal at the NSC access on 105th Avenue and a pedestrian underpass. WSB has estimated the additional cost of these services as $1,430 to review the concept design additions and prepare alternative concept layouts and associated cost estimates.
Recommendation
By motion, authorize an amendment to the professional design services contract with WSB from the original amount of $348,700 to $384,863 for the additional service performed. This amended contract amount includes $32,000 in compensation for the design changes of added roundabout to the NSC south campus and turn lane to the MAC parcel, $ 2,733 in compensation for the design changes to add an east bound left turn into the Gabrelcik property, and $1,430 in compensation for the design and cost estimates for two additional roadway design alternatives of a traffic signal and pedestrian underpass.