HomeMy WebLinkAboutTIS 2025-07-28 Item 1E - Bid Award - Gilliam Creek Culvert Repair at Inlet with Hoffman Construction
TO: Transportation and Infrastructure Services Committee
FROM: Jen Tetatzin, Public Works Director
BY: Sherry Edquid / Josh Hopkins, Project Manager
CC: Mayor Thomas McLeod
DATE: July 25, 2025
SUBJECT: Gilliam Creek Culvert Erosion Repair
Project No. 82541202
Construction Bid Award
ISSUE
Request Council approval to award the construction contract for the Gilliam Creek Culvert Erosion
Repair to Hoffman Construction, Inc., the lowest responsive and responsible bidder, in amount of
$182,639.64
BACKGROUND
The Gilliam Creek bank upstream of the inlet to the culvert that runs beneath the S. 66th Avenue bridge
has experienced increased scouring over time, particularly in response to large storm events.
Unimpeded scour at this location could compromise the adjacent road embankment. This project
entails repairing eroded portions of the bank by placing rock and boulders to armor the embankment
and protect the inlet, and permeable ballast to reinforce the embankment and vegetation restoration.
Work is anticipated to be completed within approximately 18 working days. The construction schedule
will need to comply with the permitted in-water work window between August 1 and September 30.
DISCUSSION
A call for bids was advertised on June 30 and July 7, 2025, editions of the Seattle Times and DJC. Five
(5) bids were opened on July 15, 2025. The bids were tabulated and checked for errors. Three (3)
bids were above the engineer’s estimate of $339,834.76 and two below. The confirmed lowest bidder
was Hoffman Construction, Inc. with a bid price of $182,639.64.
FINANCIAL IMPACT
Construction costs associated with the Gilliam Creek Culvert Erosion Repair Project are funded by a
King County Flood Control District Flood Reduction grant of $479,639.00.
Contract $182,639.64 KC FCD Grant $479,639.00
Contingency – 20% $36,527.93
Total $219,167.57
RECOMMENDATION
Council is being asked to approve the construction award with Hoffman Construction, Inc. in the
amount of $182,639.64 plus contingency for the Gilliam Creek Culvert Erosion Repair Project and
consider this item on the Consent Agenda at the August 4, 2025 Regular meeting.
Attachments:
Bid tabulation
Gilliam Creek Erosion Repair CIP
83
CITY OF TUKWILA
IEEICLIE33ffiIl=
GILLIAM CREEK CULVERTEROSION REPAIR PROJECT
PROJECT NUMBER: 8125 412 02
July 15, 2025 - 10:00 A.M.
ids were accepted untii the hour of 9,30 a.m. via USPS mail and in -person at the City Clem-counter;
Bidders could access the bid opening and hear bids read plublicly alloud via Microsoft Teams, by dialing
253) 292-9750, Conference ID: 136i 653 345#
BIDDER NAME & SECURM
ADDENDA
ACKNOWLEDGED TOTAL BID PRICE APPARENT
LOWEST BIDDER
DATE OF RECEIPT BID REC'D.?
0) Including Tax) RANK ORDER)
Hloffm,an Construction, Inc Yes X 182,639 64 1
July 15, 2025 @ 9:30AM
TM C Contractors, LLC Yes X 312,394u96 2
July_15, 2025 @ 9:30AM
011s,oun Brothers Excavating, Inc Yes X 36065546,, 3
July 15, 2025 @ 9:30AM
Southworth, & So,ns, Inc
Yes X 448,854.19 4
July 15 20125 @ 9:30AM
Northwest Cascade, Inc Yes X 518,064 53 5
July 15 2025 19:30AM
ENGINIEER'S ESTIMATE 3391834,76
The aibove figures appear as written within bild documents-, and as read aloud at blid
opening. THEY DO NOT, hiowever, REPRESENT ANY BID AWARD, apparent low, or,
otherwise.
M100
84
CITY OF TUKWILA CAPITAL PROJECT SUMMARY
2025 to 2030
PROJECT:Gilliam Creek Erosion Repair Project #82541202
Project Manager Joshua Hopkins Department Surface Water
DESCRIPTION:
JUSTIFICATION:
STATUS:
MAINTENANCE IMPACT:
COMMENT:
FINANCIAL (in thousands) 2025 2026 2027 2028 2029 2030 Beyond TOTAL
Project Costs
Design 128$ -$ -$ -$ -$ -$ -$ 128$
Construction Mgmt. 90$ -$ -$ -$ -$ -$ -$ 90$
Construction 263$ -$ -$ -$ -$ -$ -$ 263$
Total Project Costs 481$ -$ -$ -$ -$ -$ -$ 481$
Project Funding
Proposed Grant 481$ -$ -$ -$ -$ -$ -$ 481$
Total Project Funding 481$ -$ -$ -$ -$ -$ -$ 481$
Stabilize and protect eroded streambank slopes upstream of the 66th Ave S culvert inlet
This project is intended to protect the 66th Ave S roadway infrastructure and prevent future flooding to
Southcenter.
The project has been scoped for design, permitting and construction and a grant applied for with the Flood
Control District to cover all costs.
M&O is for three years, so 3x $8,400. Mitigation is expected in the form of vegetation restoration for
temporary and permanent impacts, cost is unknown.
This work is to occur during the in-water work window for the Green River and Gilliam Creek and may
require mitigation for project impacts to aquatic and stream buffer habitat.
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