Projects — TIB Project Information

TIB Project Information

Town of Winthrop's Horizon Flats Road

6-E-887(006)-1

Summary
Information & Schedule
Funding
Description
Pictures
Delays
Payments

6-E-887(006)-1
Horizon Flats Road
Twin Lakes Rd to 3650 feet south

FY 2023 Small City Arterial Program
Current Phase : Audit
Total TIB Funding : $961,136

County: Okanogan | Legislative District: 12 | Project Length: 0.69 | TIB Engineer: Andrew Beagle | Last Payment Date: 04/01/2025

Project Information

Lead Agency	WINTHROP
Funding Year	2023
Program	SCAP
Current Phase	Audit
Legislative District	12
Congressional District	4
Federal Route Number	9999
Project Length	0.69 mi.
ADT	1,200
Functional Class	TIB Arterial
Type of Work	Reconstruction
Project Contact	Jacob Gates
Contact Email	jacob@twonofwinthrop.com
TIB Engineer	Andrew Beagle
Last Payment Date	04/01/2025
Cultural Resource Assessment	CRA

Project Schedule

	Target Date	Actual Date
Project Selection Date		11/19/2021
Delayed Project Date	07/01/2024
DAHP Assessment Date		05/02/2024
Predesign Approval
Design Approval	02/01/2022	01/25/2022
Bid Auth. Approval	02/15/2024	06/07/2024
Construction Approval	06/30/2024	07/08/2024
Project Closeout	03/01/2025	03/11/2025
Audit Date		04/01/2025
Withdrawn Date

Project Funding

	TIB Funds	Project Costs
Environmental Study	0	0
Design Study	0	0
Total Predesign	0	0

Special Study	0	0
Design	113,520	97,755
Right of Way	0	0
Total Design	113,520	97,755

Construction Engineering	90,816	139,446
Construction Contract	756,800	808,989
Other Construction	0	0
Total Construction	847,616	948,435

Funding Increase	75,607
Funding Surplus	- 75,607
Total TIB Funding	961,136	1,046,190

Local Funding Partners

	Funding Amount	Percent
WINTHROP	85,054	8.1%
WSDOT Funding	0	0.0%








Total Local Funding	85,054	8.1%

Project Description

***Updated Scope Approved 5/19/2023 Board Action*** Three distinct sections and revised drainage solution. Stormwater will be collected with catch basins and conveyed to drywells. Additional capacity for overflow will occur at a recently constructed swale near the new fire station (mid section vicinity). The intent is to avoid slope erosion particularly on the upper section where 21 side slopes exist. The pavement scope is different for each section Lower section - Twin Lakes Road to 1000 feet south (first curve vicinity) - pulverize existing asphalt, regrade roadway crown, 5” crushed surfacing top course (CSTC), and overlay with 3.5” of Hot Mix Asphalt (HMA). Mid section - between curves – install 12” perf pipe from catch basins to a down gradient drywell and existing swale adjacent to the fire department property. Full depth shoulder widening and 0.15’ full section HMA overlay. Upper section – Second Curve vicinity to project limit – Widen shoulders with 4” CSTC and 1.25” HMA. 0.15’ full section HMA overlay.

Existing Condition

Horizon Flats Road serves the Towns industrial/manufacturing area as well as a growing residential community. The existing street requires yearly maintenance to keep operation during the Spring thaw due to poor drainage and pavement condition. Heavy truck traffic, sharp curves and inclines increase maintenance and safety concerns. Springtime closures and weight restrictions have been considered but difficult to implement due to their detrimental impact to area businesses and major Town employers. Lack of an ezisting stormwater collection system and steep roadway and adjacent land slopes create erosion and flooding issues for both the roadway and surrounding properties.

Project Benefits

Restores structural condition

Project Pictures

Fullscreen View

Project Delays

Delay Type	Resolution Date	Comments
No delayed project history.