wsdot presentation lbc culvert - granicus

To:

From:

CITY OF WOODINVILLE, WA

REPORT TO THE CITY COUNCIL 17301 133rd Avenue NE, Woodinville, WA 98072 WWW.Cl.WOODINVILLE.WA.US

Honorable City Council i. A /

Richard A. Leahy, City Manager \~v

Date: 01/21/2014

By: Thomas E. Hansen, P.E., Public Works Director/£;?:?-

Subject: WSDOT Presentation about Impacts of Little Bear Creek Culvert Replacement FINANCIAL ACTION SUMMARY

Expenditure Required Amount Budgeted/Approved Additional Amount Required

$0 $0

ISSUE: Shall the City Council receive a presentation from the Washington State Department of Transportation (WSDOT) concerning the construction options and the traffic control impacts for the Little Bear Creek Culvert Replacement Project?

RECOMMENDATION: To receive the presentation and provide comments and feed back to WSDOT staff.

BACKGROUND/DISCUSSION: WSDOT is designing a project to replace the existing box culvert under SR 202 ( 131 st Avenue NE) for Little Bear Creek. The existing culvert does not meet current installation guidelines for culverts on fish migratory streams. It restricts the free passage of salmon and other species that try to reach the upper sections of Little Bear Creek. They are under federal court order to replace this culvert and 800 others throughout the state. On Tuesday night, WSDOT staff will give a presentation on the options considered in replacing this box culvert and the traffic impacts of each option. WSDOT is planning to start construction of this project in 2015.

ALTERNATIVES: 1. To receive the presentation and provide comments to WSDOT about proposed traffic

control and detours for the Little bear Creek Culvert Replacement Project.

2. Request additional information.

RECOMMENDED MOTION: NO MOTION REQUIRED.

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2

SR 202 Little Bear CreekFish Barrier Removal

Hung HuynhProject Engineer

City Council BriefingWoodinville City Hall

January 21st, 2014

Lynn PetersonSecretary of Transportation

Cathy GeorgeEngineering Manager


2___.

• RCW 77.57.030 requires unrestricted fish passage at all stream crossings

• U.S. District Court permanent injunction No. C70-9213 requires WSDOT to restore fish passage at more than 800 culverts (this location included) in western Washington by 2030

• Rank #3 statewide for fish passage restoration

• Flow exceeds maximum design velocity for trout

• Replace existing 10’ wide opening with a 30’ wide opening


3Picture from Bing.com.

Culvert

Dairy Queen

McLendon

Dream Auto

• Main Access to City

• 38,000 vehicles each day

• 3,500 vehicles during PM peak hour

• Emergency responders

• Underground utilities


4___

Downstream of culvert looking at SR 202 Upstream of culvert looking at SR 202

Little Bear Creek is approximately 30’ below SR 202

SR 202 SR 202


5___

Constraints

• Minimize impact to the community during construction

• All work in the creek must occur between July 1st and September 30th

• Keep costs within budget


6___

Options

1. Culvert - replace existing culvert with a larger culvert

2. Bridge - replace existing culvert with a bridge

3. Tunnel - replace existing culvert with a tunnel


7___

Culvert Option Culvert

Dream Auto

10,300 CY hole = 1,015 truck & pup

Dairy Queen


8___

Downstream of culvert looking at SR 202 Upstream of culvert looking at SR 202

Little Bear Creek is approximately 30’ below SR 202

SR 202 SR 202


9___

Culvert Option Culvert

Dairy QueenDream

Auto

10,300 CY hole = 1,015 truck & pup

Close SR 202 for a month

Not Desirable


10___

Bridge Option

Existing Culvert

Edge of Dairy Queen Parking Lot/Driveway

Culvert

Dream Auto

Dairy Queen


11___

Bridge OptionClose SR 202 for 2 weekends

Secant walls to be installed at night

Shaft caps to be installed at night

Precast deck slabs to be installed during weekend closure

Roadway to be constructed during weekend closure

Better


12___

Tunnel Option

• Existing sandy soils present unacceptable risks

• Not enough space at either end to perform the installation without significant environmental impacts

• Twice the cost of the bridge option

Not Recommended

Not suitable for site conditions


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Culvert Bridge Tunnel

Road Closure 1 month 2 weekends None

Night time Lane Closure Intermittent 10 months intermittent

Cost $6M $8M $15M

Constructability risks Acceptable Acceptable Not

Acceptable

Options Comparison


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Selected Option

• Replace existing culvert with a bridge in order to minimize impact to the community during construction

• Construction from Summer 2015 through Fall 2016

• Night time work from Summer 2015 to Summer 2016

• Two (2) weekend closures in May or June 2016

• Daytime off road work Summer and Fall 2016


15___

Moving Forward

• Brief City Council

• Meet with the business community

• Meet with the affected property owners and businesses

• Public information campaign leading up to the weekend closures

• Continue to work with city staff to minimize construction impacts


16Picture from Bing.com.

Culvert

Dairy Queen

McLendon

Dream Auto

wsdot presentation lbc culvert - granicus

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