HomeMy WebLinkAbout2023-05-01 J01F_04 Traffic Signal System Enhancements, Detection_Change Order 2AGENDA ITEM:
CITY OF WAUKEE, IOWA
CITY COUNCIL MEETING COMMUNICATION
MEETING DATE: May 1, 2023
AGENDA ITEM:Consideration of approval of Change Order No. 2 to Iowa Signal for the
Traffic Signal System Enhancements Project increasing the contract
amount by $9,938.01.
FORMAT:Motion
SYNOPSIS INCLUDING PRO & CON: At the time of the original DOT letting date, the
GridSmart stopline detection was designed per recommendations from
the supplier/vendor. After installation, it was determined that additional
cameras were necessary at 3 intersections to minimize impacts to
detection operation due to sun glare.
Change Order No. 1 is for installation of additional stopline video
detection at three intersections.
FISCAL IMPACT INCLUDING COST/BENEFIT ANALYSIS: The net result of this
Change Order increases the contract price in the amount of $9,938.01.
COMMISSION/BOARD/COMMITTEE COMMENT:
STAFF REVIEW AND COMMENT:
RECOMMENDATION: Approve the change order.
ATTACHMENTS: I. Change Order No. 2
II. Letter of Recommendation
PREPARED BY:Beth Richardson
REVIEWED BY:Sara Kappos SKK
PUBLIC NOTICE INFORMATION –
NAME OF PUBLICATION:
DATE OF PUBLICATION:
J1F4
2727 SW SNYDER BOULEVARD | P.O. BOX 1159 | ANKENY, IA 50023-0974
P: 515-964-2020 l F: 515-964-7938 l SNYDER-ASSOCIATES.COM
v:\projects\2019\119.0727.01\construction\ltr_2023-04-24_co2-adddetection.docx
April 24, 2023
Rudy Koester, PE, City Engineer
City of Waukee
805 University Ave
Waukee, IA 50263
RE: CHANGE ORDER NO. 2 - ADDITIONAL DETECTION
TRAFFIC SIGNAL SYSTEM ENHANCEMENTS PROJECT
PROJECT NO.: ICAAP-SWAP-8177(624)--SH-25
Dear Mr. Koester:
At the time of the original DOT letting date, the GridSmart stopline detection was designed per
recommendations from the supplier/vendor. After installation, it was determined that additional
cameras were necessary at 3 intersections to minimize impacts to detection operation due to
glare.
This change order is for the installation of additional stopline video detection at three
intersections. We recommend approval of Change Order No. 2 for the Traffic Signal System
Enhancements project in the amount of $9,938.01.
Please let us know if you have any questions or concerns with this change order.
Sincerely,
SNYDER & ASSOCIATES, INC.
Todd Knox, PE, PTOE
Project Manager
Enclosure
cc: Wayne Lesley, Iowa Signal
OWNER: City of Waukee PROJECT: Traffic Signal System Enhancements Project
PROJECT #: ICAAP-SWAP-8177(624)--SH-25
To:
You are directed to make the following changes in this contract:
1. Description of change to be made:
2. Reason for Change:
3. Settlement for the cost of making the change shall be as follows:
Item No. Item Description Quantity Unit Unit Price Total Price
1. Item 8002 Additional Stopline Video Detection 1 Lump Sum $9,938.01 $9,938.01
TOTAL $9,938.01
4.This change order will result in a net change in the contract completion time of days and a net change
in the cost of the project of $9938.01 divided as follows:
Contract Contract
Amount Completion Date
Approved funds and contract completion date as per (Engineer's
Estimate, Contract or last approved C.O.)$594,016.00 November 1, 2020
Change due to this C.O. (+ or -)$9,938.01
Totals including this C.O.:$603,954.01 August 1, 2021
The change described herein is understood, and the terms of settlement are hereby agreed to:
Iowa Signal, Inc.
CONTRACTOR
By DATE:
Snyder & Associates, Inc.
ENGINEER
By DATE:
City of Waukee
OWNER
By DATE:
CHANGE ORDER NO. 2
City, State, Zip
Iowa Signal, Inc.
Contractor
3711 SE Capitol Cir
Grimes, IA 50111
Address
Detection was experiencing issues with glare at certain times of day, mainly shortly after sunrise and before sunset. The additional
cameras provided redundancy to detect traffic in protected only left turn lanes when a different camera could not because of glare.
Installation of additional stopline detection cameras at the intersections of Hickman Rd & NW 2nd St, Hickman Rd & Warrior Ln, and
Hickman Rd & Dartmoor Dr.
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