Title/Name/Summary
153rd Street and Ravinia Avenue Intersection Improvements - Amendment #1 to Phase I Contract
History
In June 2021, the Village retained V3 Companies, Ltd. (V3) to perform a Phase I engineering study of the 153rd Street and Ravinia Avenue intersection. Three intersection design alternatives were discussed at the November 29, 2021 Committee of the Whole (CoTW) meeting: 1) Improve the intersection using existing geometry, 2) Use the existing geometry but add a southbound right-turn lane on Ravinia Avenue, or 3) Convert the intersection to a roundabout.
At the January 4, 2022 CoTW meeting, Village staff presented design and construction cost estimates for each of the three alternatives prepared by V3. The intersection is expected to experience an increase in traffic volume due to 2050 traffic projections and the eventual extension of Ravinia Avenue to La Grange Road (southeast of Costco). The 2050 traffic projections are prepared by the Chicago Metropolitan Agency for Planning (CMAP). Based on available data, experience at other locations, and consultant's/staff's engineering experience, a roundabout at this intersection would provide a long-term solution with improved traffic flow, reduced traffic delays, reduced congestion, reduced air pollution and improved pedestrian safety.
In June 2021, the Board approved V3's fee for Phase I preliminary engineering contract at $69,850 (based on using the existing intersection geometry). The initial Phase I fee for the roundabout estimated by V3 and discussed at the January 4, 2022 CoTW meeting was $203,500. Village staff estimated the new contract total for the Phase I roundabout design at approximately $185,000. Staff was able to negotiate with V3 the Phase I fee for the roundabout at total contract value of $179,726.17, which includes the original $69,850. Therefore, this amendment would add an additional not-to-exceed amount of $109,876.17.
Under this contract, V3 will retain Strand Associates, Inc. as a sub-consultant. Strand previously designed the 147th Street and Ravinia Avenue roundabout. V3 will provide the Village with an approved IDOT Phase I Project Development Report (PDR) and will apply for Phase II and Phase III funding throughout the duration of Phase I.
Financial Impact
Funding for this project will be provided through a FY 2022 Capital Budget amendment. Staff will include the additional fee request for this project in the next budget amendment.
Recommended Action/Motion
I move to approve amendment #1 to the Phase I contract for the 153rd Street and Ravinia Avenue Intersection Improvements project in an amount not to exceed $109,876.17;
AND
I move to authorize the Village Manager to execute all related contracts, subject to Village Attorney review.