HomeMy WebLinkAboutTIS 2025-06-23 Item 2D - Interagency Agreement - King County Parks (Southcenter Blvd Rd Diet/Lake to Sound Trail)
TO: Transportation and Infrastructure Committee
FROM: Jen Tetatzin, Public Works Director
BY: Cyndy Knighton, Senior Program Manager – Transportation
CC: Thomas McLeod, Mayor
DATE: June 20, 2025
SUBJECT: Southcenter Boulevard Road Diet/Lake to Sound Trail
Project No. 92510406
Interagency Agreement (IAA)
ISSUE
An interlocal agreement between Tukwila and King County Parks (KC Parks) that would combine the
design of the City’s Southcenter Boulevard Road Diet project and the County’s Lake to Sound Trail (F1
section). KC Parks would lead the design efforts with City involvement.
BACKGROUND
In the 2025-2026 Capital Improvement Program, a new project was added, Southcenter Boulevard Road
Diet, which would narrow the roadway between approximately 62nd Ave S and 66th Avenue S. This street
segment is on the High Injury Network identified in the recently adopted Local Road Safety Plan as it
experiences a high number of collisions with serious injuries and has had fatalities in the past. Speeding
and limited sight distance are common contributing factors. At the same time as this project was being
identified, KC Parks came forward to discuss a regional trail, Lake to Sound Trail (L2S) which will provide
a trail connection from Lake Washington to Puget Sound. One missing section in Tukwila would connect
the existing Green River Trail at Southcenter Boulevard to the west side of the 53rd Avenue S intersection.
This section is referred to as the F1 Segment. A future F2 Segment will connect from F1 through into the
City of SeaTac. As these two projects overlap, staff from both agencies began early coordination.
DISCUSSION
Staff agreed that having a combined scope of work for project design for both projects is the most
expedient, cost-effective use of taxpayer funds. The KC Parks project is much larger and more complex
than the city’s road diet project. Therefore, having KC Parks lead the design effort was the logical choice.
The attached Interagency Agreement (IAA) establishes the framework for this combined design effort.
The IAA has been reviewed by the City Attorney’s office. It is likely that a future IAA or amendment to
this IAA would cover the construction of the combined project. City staff would be directly involved in the
design effort through specific oversight of the project as well as through the necessary permitting that will
be required for KC Parks to obtain prior to construction authorization.
FINANCIAL IMPACT
The IAA outlines the terms for Tukwila to contribute funds toward the Road Diet design. Following the
execution of the IAA and a consultant agreement based on the agreed-upon scope of work, Tukwila will
be invoiced for $100,000. After design of the project is completed, currently estimated to be in late 2026,
Tukwila would be invoiced for $135,000. Total Tukwila costs would be $235,000, which is included in the
current Capital Improvement Program (CIP) and City Budget.
RECOMMENDATION
The Council is being asked to approve the Interagency Agreement and consider this item for the July 21,
2025, Regular Meeting.
ATTACHMENTS
• Interagency Agreement and CIP Page
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Agreement Reference Number - AGR2025-01
INTERAGENCY AGREEMENT BETWEEN KING COUNTY AND THE CITY OF TUKWILA
FOR DESIGN OF COMBINED LAKE TO SOUND TRAIL SEGMENT F1 and SOUTHCENTER
BOULEVARD ROAD DIET LOCATED IN TUKWILA, WA
This INTERAGENCY AGREEMENT (the "Agreement'') is made and entered into by and between the
City of Tukwila ("City") and King County Parks and Recreation Division ("County"), regarding design of
the portion of Segment F1 of the Lake to Sound Trail. The County and Tukwila are collectively referred
to as the ("Parties").
RECITALS
A. On August 6, 2019, the King County voters approved Proposition No. 1 Parks Levy that
authorized an additional six-year (2020-2025) property tax levy for specified park purposes, including the
improvement of parks, development of regional trails, and enhancement of recreation, access, and
mobility in King County.
B. The Lake to Sound Trail is part of King County’s Regional Trail System (“RTS”), one of the
nation’s most extensive multi-use trail networks with more than 175 miles of trails for recreation and non-
motorized mobility and commuting.
C. The Lake to Sound Trail is planned to extend from the southern end of Lake Washington to Puget
Sound and will provide recreational and health benefits to residents of the cities and County.
D. The Lake to Sound Trail is being constructed in segments. Segment B is a 1.5-mile segment that
follows Des Moines Memorial Drive from 156th Way in SeaTac to South Normandy Road in Burien and
was completed in 2017. Segment A is a 1.1-mile segment that passes through the Black River Riparian
Forest Park in the City of Renton to the Green River Trail in the City of Tukwila’s Fort Dent Park.
Segments D, E, and F are in the cities of Renton and Tukwila and will complete an east-west connection
along the trail corridor.
E. Segment F1 is located within the city and Tukwila. This agreement governs that area within the
City of Tukwila within Southcenter Boulevard Right of Way from the Green River Trail to 53rd Avenue
S.
F. The City of Tukwila has funding for design of the Southcenter Boulevard Road Diet project (the
“City Road Diet Project” or “Project”) and King County Parks has funding for design of the Lake to
Sound Trail Segment F1. These projects directly overlap and both agencies believe combining design into
one project will create design, permitting and cost efficiencies.
G. The City of Tukwila has funding for sewer and water projects in the same project area as
Tukwila’s Road Diet project and King County Parks’ Lake to Sound Trail Segment F1 and intends to
coordinate design of the sewer and water projects with the Road Diet and Trail. In addition, both parties
are contemplating entering into an agreement in the future which would combine all projects into one
construction package to reduce construction impacts.
H. The City of Tukwila is a non-charter optional municipal code city incorporated pursuant to RCW Title
35A, of the State of Washington, with authority to enact laws and enter into agreements to promote the
health, safety, and welfare of their citizens and for other lawful purposes.
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Agreement Reference Number - AGR2025-01
I. King County is a home rule charter county that, among other things, provides regional and rural
parks, recreation, and sports facilities for public use. RCW 36.89.030 authorizes King County to
establish, acquire, develop, construct, and improve open space, park, recreation, and community facilities,
including non-motorized trails and paths.
J. Under King County Code, Section 2.16.045. E.1, the duties of the County’s Parks and Recreation
Division include providing active recreation facilities by facilitating agreements with other jurisdictions
and entities.
NOW THEREFORE, it is mutually agreed as follows:
1. PURPOSE
The purpose of this Agreement is to set forth the rights, responsibilities, and obligations of the Parties
relating to hiring a consultant to design Lake to Sound Segment F1 and coordinate that design work with
the City of Tukwila. The City of Tukwila will provide King County funding to incorporate City Road
Diet Project requirements into the Lake to Sound Segment F1 project design. This Agreement covers that
portion of Lake to Sound Segment F1 trail design that is within Southcenter Boulevard and relates to
addressing the design requirements of the City Road Diet Project. This Agreement is not intended to
address construction, operation, and/or maintenance of the trail segment or the City Road Diet Project. If
the Parties elect to proceed with implementation of the Lake to Sound Segment F1 Trail, the Parties
contemplate entering into a separate agreement to further define their respective roles, responsibilities and
limitations related to the construction, operation, and/or maintenance of the Lake to Sound Segment F1
trail.
A draft SCOPE OF WORK for the Project is included as ATTACHMENT A. In consultation with the
City, the final scope of work will be negotiated by the County with the selected consultant. Both the City
and County will approve the final scope of work in writing prior to the County executing a consultant
contract.
2. DURATION
This Agreement shall become effective immediately upon execution by the Parties and shall remain in
effect until the City and County have accepted the deliverables described in Attachment A. The Parties
anticipate that the Project design will be completed by March 15, 2030.
3. FUNDING & PAYMENTS
3.1 The City shall fund the Project conducted by the consultant to a maximum amount of $235,000 (two-
hundred and thirty-five thousand dollars) (“City Contribution”) from the 2025 and 2026 City of Tukwila
Budget, as approved by the Tukwila City Council. Any funding for the Project in addition to the City
Contribution would need to be negotiated between the City and County as an amendment to the
Agreement.
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Agreement Reference Number - AGR2025-01
3.2 The City Contribution shall be as follows:
A. $100,000 to be invoiced by the County to the City following execution of a consultant agreement
to implement the agreed upon Scope of Work for the Project. This invoice shall include the scope
and budget for the Project.
B. Final actual costs up to $135,000 after Scope of Work is complete and all deliverables are
accepted by City.
C. Invoices shall reference the “Southcenter Boulevard Road Diet Design” and MOA date &
number, and be submitted via email to Cyndy.Knighton@tukwila.gov with an email copy to
Adam.Cox@tukwila.gov.
3.3 The City shall distribute funding to the County based on the invoicing schedule in Section 3.2 of the
Agreement, above, within 30 days of receiving the invoice from the County.
4. COUNTY RESPONSIBILITIES
4.1 Lead Agency. The County shall act as the sole consultant project manager for the design of the Lake
to Sound Trail Segment F1, which will incorporate requirements for the City Road Diet Project in the
vicinity of Lake to Sound Trail Segment F1 (hereinafter referred to as the “Combined Design Work”).
Except as otherwise provided herein, the County shall be solely responsible for oversight of the
Combined Design Work, including but not limited to, consultant selection, consultant procurement, and
contract and project management.
4.2 Public Outreach. The County may develop and implement a public outreach program as it deems
necessary for the Combined Design Work. The County will coordinate with the City to allow City
participation in any outreach activities and afford the City prior review, before publication, of any
outreach materials associated with the Combined Design Work. The City may choose to conduct
additional public outreach on behalf of the City Road Diet Project.
4.3 Scope of Work Responsibilities.
A. The County shall prepare a final scope of services consistent with the outline scope attached as
Attachment A and negotiate the scope of work with consultant to complete the technical analysis
and engineering anticipated for the Combined Design Work, which shall be subject to final
approval by the City in writing prior to the County executing the Combined Design Work
consultant contract.
B. Administer the consultant contract, including accounting and payment to the consultant; and
maintain records for the Project.
4.4 Coordination of Activity.
A. The County shall hold quarterly coordination and design meetings with the City, at a
minimum. The County will submit plans and specifications for the Project at 30%, 60%, 90% and
100% design in the development process, and more if the County chooses to do so. The City will
have fifteen (15) working days to review submitted plans and specifications and provide
consolidated comments to the County.
B. Upon the County’s receipt of interim and final deliverables, it shall promptly provide the City
with copies of the scope of the Combined Design Work consultant contract, schedule, design
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Agreement Reference Number - AGR2025-01
documents, estimates, drawings, meeting materials and all draft and final deliverables from the
consultant contract.
4.5 Permitting and Environmental Review. The County shall be the lead agency for the Lake to Sound
Trail Segment F1 Project with the City Road Diet Project design requirements under the State
Environmental Policy Act (SEPA) and shall apply for all applicable permits. In addition, Washington
State Department of Transportation is anticipated to determine the National Environmental Policy Act
(NEPA) scope of the project and the County shall submit NEPA materials. To the extent that the City’s
signature on applications or other involvement is required, as the owner of the real property on which said
project is being designed, the City agrees to cooperate with the County and take all necessary actions to
obtain the permits.
5. CITY RESPONSIBILITIES
5.1 Coordination of Activity. The City shall timely provide the County with known information relevant
to the City Road Diet Project. The City shall assign designated personnel to provide timely review of the
City Road Diet Project documents from the County. The designated City personnel shall review an
County provided design package documents within fifteen (15) working days of receipt, unless the City’s
designated personnel has been out of the office during that period and notice of the need for additional
time has been provided to the County.
5.2 Public Outreach. The City shall review and provide comments on all draft outreach materials within
ten (10) working days of receipt of the same.
5.3 Project Participation. The City’s designated personnel shall attend regularly scheduled progress
meetings and design review meetings or workshops during development of the Combined Design Work.
For non-regularly scheduled meetings, the County shall provide fourteen (14) working days notice, if
possible, or unless the Parties mutually agree otherwise. To the extent possible, the County shall provide
the City with all written materials in advance of any meetings, such that the City will have sufficient time
to review said materials prior to the meeting.
5.4 Integration with Planning Documents. The City shall make every effort to integrate the Lake to Sound
Trail Segment F1 into various City planning documents.
6. TERMINATION
6.1 Termination for Default. Either Party may terminate this Agreement in the event the other Party fails
to perform a material obligation of this Agreement. Written notice of a Party's intention to terminate this
Agreement pursuant to this Subsection 6.1 shall be provided to the other Party not less than fifteen (15)
calendar days prior to the effective date of Termination.
6.2 Termination for Convenience. Either Party to this Agreement may terminate the Agreement, in whole
or in part, for convenience and without cause. Written notice of a Party's intention to terminate this
Agreement pursuant to this Subsection 6.2 shall be provided to the other Party not less than thirty (30)
days prior to the effective date of termination. If the City terminates no monies shall be returned.
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Agreement Reference Number - AGR2025-01
7. DISPUTE RESOLUTION
7.1 The Parties agree to make good faith efforts to prevent and resolve potential sources of conflict at the
lowest level.
7.2 The Parties agree to make good faith efforts to resolve disputes arising out of or related to this
Agreement using good faith negotiations by engaging in the following dispute escalation process should
any such disputes arise:
a) Level One -King County's Designated Representative and the City’s Designated Representative
shall meet to discuss and attempt to resolve the dispute in a timely manner. If they cannot resolve
the dispute within fourteen (14) calendar days after referral of that dispute to Level One, either
party may refer the dispute to Level Two.
b) Level Two -King County's Director of the Department of Natural Resources and Parks, or
Designee and the City’s City Administrator, or Designee shall meet to discuss and attempt to
resolve the dispute, in a timely manner. If they cannot resolve the dispute within twenty-one (21)
calendar days after referral of that dispute to Level Two, either party may refer the dispute to
Level Three.
c) Level Three- King County's Director of the Department of Natural Resources and Parks and King
County's Executive or Designee and the City’s City Administrator and Mayor or their Designees
shall meet to discuss and attempt to resolve the dispute in a timely manner.
6.3 Except as otherwise specified in this Agreement, in the event the dispute is not resolved at Level
Three within fourteen (14) calendar days after referral of that dispute to Level Three, the Parties are free
to file suit, seek any available legal remedy, or agree to alternative dispute resolution methods such as
mediation or arbitration. At all times prior to resolution of the dispute, the Parties shall continue to
perform any undisputed obligations and make any undisputed required payments under this Agreement in
the same manner and under the same terms as existed prior to the dispute. Notwithstanding anything in
this Agreement to the contrary, neither Party has an obligation to agree to refer the dispute to mediation,
arbitration nor other form of dispute resolution following completion of Level Three of the process
described herein. Such agreement may be withheld for any reason or no reason.
7. NOTICES
Any notice required to be given by either Party to the other pursuant to the provisions of this Agreement
or any law, present or future, shall be in writing and shall be deemed to have been duly given or sent if
either delivered personally or via U.S. mail to the following Designated Representative or future
designee:
KING COUNTY
Parks and Recreation Division
Attn: Peter Dane
201 S. Jackson Street Suite 500
Seattle, WA 98104-3855
Pdane@kingcounty.gov
Kcparks.legalnotices@kingcounty.gov
THE CITY OF TUKWILA
Public Works Department
Attn: Cyndy Knighton
6300 Southcenter Blvd, Suite 200
Tukwila, WA 98188
Email address: Cyndy.Knighton@TukwilaWA.gov
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Agreement Reference Number - AGR2025-01
All notices issued under this Agreement shall be deemed received on the second business day after being
sent via U.S. mail, or if personally delivered, at the time they are actually hand delivered to the addressee.
Each Party may change its notice address set forth in this section by giving notice of a new address to the
other Party in accordance with this section.
8.GENERAL LEGAL PROVISIONS
8.1 Compliance with Law. The City and County shall comply, and shall ensure their employees, agents
and assigns comply, with all federal, state, and local laws, regulations, and ordinances applicable to the
work and services performed pursuant to this Agreement.
8.2 Parties. No joint venture or partnership is formed as a result of this Agreement. No employees or
agents of either Party or any of either Party's Contractors or subcontractors shall be deemed, or represent
themselves to be, employees of the other Party.
8.3 Laws and Venue. This Agreement shall be interpreted in accordance with the laws of the State of
Washington in effect on the date of execution of this Agreement. The Superior Court of King County in
Seattle, Washington shall have exclusive jurisdiction and venue over any legal action arising under this
Agreement.
8.4 Headings. Section titles or other headings contained in this Agreement are for convenience only and
shall not be part of this Agreement, nor be considered in its interpretation.
8.5 Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be
an original, but such counterparts shall constitute one and the same instrument.
8.6 No third-Party Beneficiaries. This Agreement is entered into solely for the mutual benefit of the
Parties. This Agreement is not entered into with the intent that it shall benefit any other person and no
other such person shall be entitled to be treated as a third-party beneficiary of this Agreement.
8.7 No Waiver. Neither payment nor performance by a Party shall be construed as a waiver of the other
Party's rights or remedies against the Party. Failure to require full and timely performance of any
provision at any time shall not waive or reduce the right to insist upon complete and timely performance
of such provision thereafter.
8.8 Entire Agreement. This Agreement shall constitute all terms, conditions, and provisions agreed upon
by the Parties hereto. No modification or amendment of this Agreement shall be valid or effective unless
evidenced by an agreement in writing signed by both Parties.
8.9 Interpretation. This Agreement is and shall be deemed jointly drafted and written by each of the
Parties to it, and it shall not be construed or interpreted against any of the Parties originating or preparing
it.
8.10 Severability. If any provisions of this Agreement are held invalid by a court of competent
jurisdiction, the remainder of this Agreement shall not be affected thereby if such remainder would then
continue to serve the purposes and objectives originally contemplated.
8.11 Hold Harmless and Indemnification. Each Party shall protect defend, indemnify, and save harmless
the other Party, its officers, officials, employees and agents which acting within the scope of their
employment as such, from any and all suits, costs, claims, actions, losses, penalties, judgments, and/or
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Agreement Reference Number - AGR2025-01
damages of whatsoever kind ("Claims") arising out of, or in exercise of any right or obligation under this
Agreement, to the extent caused by or resulting from each Party's own negligent acts or omissions. Each
Party agrees that its obligations under this Paragraph extend to any Claim brought by or on behalf of the
other Party or any of its employees or agents. The foregoing indemnity is specifically and expressly
intended to constitute a waiver of each Party's immunity under Washington's Industrial Insurance Act,
RCW Title 51, as respects the other Party only, and only to the extent necessary to provide the
indemnified Party with full and complete indemnity of Claims made by the indemnitor's employees. The
parties acknowledge that these provisions were specifically negotiated and agreed upon by them. The
provisions of this subsection shall survive and continue to be applicable to any Party exercising the right
of termination pursuant to Section 6.
The Parties have executed this Agreement, effective on the latest date shown below. The signatories
below represent and warrant that they possess the authority to execute this Agreement and bind their
respective entities.
THE CITY OF TUKWILA
_________________________________________
Tom McLeod, Mayor
Date signed: ______________________________
Approved as to form:
_________________________________________
City Attorney
Date signed: ______________________________
KING COUNTY
_________________________________________
John Taylor, Director King County Department of Natural Resources and Parks
Date signed: _______________________________
Approved as to form:
_________________________________________
County Sr. Deputy Prosecuting Attorney
Date: ____________________________________
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Agreement Reference Number - AGR2025-01
ATTACHMENT A
EXAMPLE SCOPE OF WORK
Project Management
Environmental Documents
30-percent Plans
Public Stakeholder Involvement
60-percent Plans
Real Property Coordination / Temporary Construction Easements
90-percent Plans
Bidding Assistance
Bid / Advertisement Ready Plans
Unanticipated Services
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CITY OF TUKWILA CAPITAL PROJECT SUMMARY
2025 to 2030
PROJECT:Southcenter Blvd Road Diet (62nd Ave S - 66th
Ave S)Project #92510406
Project Manager Cyndy Knighton Department Arterial Streets
DESCRIPTION:
JUSTIFICATION:
STATUS:
MAINTENANCE IMPACT:
COMMENT:
FINANCIAL (in thousands)2025 2026 2027 2028 2029 2030 Beyond TOTAL
Project Costs
Design 100$ 135$ -$ -$ -$ -$ -$ 235$
Construction Mgmt.-$ -$ 315$ -$ -$ -$ -$ 315$
Construction -$ -$ 2,050$ -$ -$ -$ -$ 2,050$
Contingency -$ -$ 390$ -$ -$ -$ -$ 390$
Total Project Costs 100$ 135$ 2,755$ -$ -$ -$ -$ 2,990$
Project Funding
Proposed Grant -$ -$ 2,383$ -$ -$ -$ -$ 2,383$
Fund Balance 100$ 135$ 372$ -$ -$ -$ -$ 607$
Total Project Funding 100$ 135$ 2,755$ -$ -$ -$ -$ 2,990$
Narrow Southcenter Blvd from 5 lanes to 3 lanes between approximately 62nd Avenue S to 66th Avenue S.
Reconfigure signal operations at 66th Avenue S to include dual left turn lanes for WB travel and one single thru lane.
Widened shared use path on north side will be created by King County Parks as part of the Lake to Sound trail
project, from approximately 66th Avenue S to Macadam Road. Coordination on design and construction between
agencies is required. Possible inclusion of water or sewer utility projects.
Road section is on the City's High Injury Network and a road diet to slow traffic and improve visibility is the optimal
solution. Coordination with King County's Lake to Sound Trail system is desirable. The County will be presenting the
section of the L2S trail to voters in 2025, which will include design and construction. The road diet is necessary to
the trail construction.
New project.
TBD. Annual maintenance of the street system may remain the same, but if the project includes the desired
improvements for street trees/landscaping, and increase in annual maintenance would occur. Negotiations
between City and King County on ownership and maintenance of the trail portion are required. KCParks has already
indicated the desire to turn the trail over to Tukwila for ownership and maintenance. Internal discussions would
need to occur to determine responsible department (PW vs. PnR).
N/A
2025 - 2026 Biennial Budget City of Tukwila, Washington
4984
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