|
z
<br />TO:
<br />FROM:
<br />City of Tu
<br />Puhfi& Wor'Is 1epor!Iron
<br />t
<br />a,j Pio ti, y 7ngineer
<br />INFORMATIONAL MEMORANDUM
<br />Transportation and Infrastructure Services Committee
<br />Hari Ponnekanti, Public Works Director/City Engineer
<br />BY: Cyndy Knighton, Senior Program Manager
<br />Scott Bates, Project Manager
<br />CC: Mayor Ekberg
<br />DATE: July 9, 2021
<br />SUBJECT: 2021 Overlay and Repair Program — 53rd Avenue S
<br />Project No. 92110401
<br />Widening Roadway for Two-way Travel
<br />IU
<br />yew
<br />ISSUE
<br />Provide an update on the 53rd Avenue S traffic revision and sidewalk plan, including widening the road to accommodate two-way
<br />travel.
<br />BACKGROUND
<br />In 2020, the engineer's estimate for widening 53rd Avenue S between S 137th Street and 52nd Avenue S for two-way traffic and
<br />adding sidewalks was $222,250, plus construction management costs. A barrier to this project was a guy pole that needed to be
<br />relocated by Seattle City Light (SCL) before widening for two-way traffic could commence. Due to these factors, this project was
<br />identified as cost prohibitive, and as an alternative, the decision was made to convert the roadway to a one-way northbound
<br />operation, while a new at -grade pedestrian walkway was installed. All construction was completed by City staff to reduce costs.
<br />During the April 12, 2021 Transportation and Infrastructure Services Committee meeting, staff presented three options for Council
<br />consideration to improve pedestrian safety and vehicular access on this section of roadway. The Committee members were
<br />supportive of Option A, which included installation of raised sidewalks on the east side of the road, design for two-way traffic, and
<br />construction as soon as funding became available.
<br />DISCUSSION
<br />One June 17, 2021, negotiation with SCL came to a resolution and they are expected to remove their guy pole by July 12, 2021,
<br />allowing this project to move forward quickly. Due to this new development, the 53rd Ave S roadway widening plans were presented
<br />to Miles Resources, LCC, the construction contractor awarded the 2021 Overlay and Repair Program contract by Council on June
<br />7, 2021, in the amount of $1,037,358.40 plus $51,867.92 in contingency. Using existing contract prices, Miles Resources, LLC
<br />estimates the road widening could be completed for approximately $50,000. Staff discussed the tremendous cost savings with
<br />Administration and the decision to move forward with the additional work was made on June 21, 2021, based on the Committee
<br />support from the April 12, 2021 meeting.
<br />FINANCIAL IMPACT
<br />Widening of 53rd Avenue S is anticipated to add approximately $50,000 to the Miles Resources, LLC contact, after adding the
<br />additional work and subtracting known project under -runs. The current estimate falls within the contract contingency of $51,867.92.
<br />Contract Budget
<br />Miles Resources, LLC Contract $1,037,358.40
<br />Additional Work for 53rd Ave S 50,000.00
<br />Total $1,087,358.40
<br />RECOMMENDATION
<br />Discussion only.
<br />Overlay & Repair Budget
<br />$1,100,000.00
<br />ATTACHMENTS: Traffic Flow Map of 53rd Ave S Triangle
<br />53rd Ave S Widening Plan
<br />2021 Overlay Program Informational Memorandum, dated April 9, 2021
<br />April 12, 2021 Transportation & Infrastructure Services Committee Meeting Minutes
<br />2021 Overlay Program Informational Memorandum, dated May 21, 2021
<br />7
<br />
|