NE 10th Avenue
Project update - Nov. 15, 2018
Paving is largely completing. Striping and other work still needs to be completed. The improved road and new bridge may be open in late 2018.
Aerial video - August 2018
Check out this Aug. 16 video, shot by a drone hovering and flying 25 to 30 feet above bridge construction over Whipple Creek along the west side of Interstate 5.
Capital road project
Cascade Bridge, LCC of Vancouver
Cascade Bridge, LLC will widen Northeast 10th Avenue along the west side of Interstate 5 and build a 450-foot long bridge over Whipple Creek.
The two-lane steel and concrete bridge will span the gap that currently exists on Northeast 10th Avenue because of Whipple Creek. The bridge will be nearly 48 feet above Whipple Creek and will be built to last for 75 to 100 years.
Existing portions of Northeast 10th Avenue in this area are between 10 and 20 feet wide, with little or no shoulders.
The project will build one travel lane in each direction, along with bicycle lanes, sidewalks and facilities to collect and treat polluted storm runoff. Water and sanitary sewer lines will be constructed as part of the project.
Northeast 10th Avenue’s intersections with Northeast 154th Street and Northeast 164th Street will have conventional two-way stop signs, with Northeast 10th Avenue as the through street.
Find out what a property on the southeast corner of Northwest 41st Avenue and Northwest 179th Street has to do with the bridge and roadway improvements.
10th Avenue bridge mitigation site (PDF)
Clark County awarded a $14.62 million contract to Cascade Bridge, which submitted the lowest of the eight bids received for this project. The contractor’s bid was $1.54 million lower than the county’s estimate of $16.16 million.
Cascade Bridge’s last major project for Clark County was replacing Fifth Plain Creek Bridge on Northeast 88th Street near Proebstel in 2015.
Clark County has received a $2.84 million federal Surface Transportation Program grant through the Southwest Washington Regional Transportation Council and a $4.8 million state loan through the Public Works Board to help pay for the bridge and road project. The county is grateful for this financial support to help build infrastructure for a growing community.
Construction started in mid-May 2017 and is scheduled to wrap up in fall 2018.
Northeast 10th Avenue will be closed to most traffic between Northeast 154th Street and Northeast 164th Street, on both sides of the Whipple Creek canyon. Local access will be maintained for residents, emergency vehicles and deliveries, although there may be occasional delays.
Construction on a related project, improving Northeast 10th Avenue between Northeast 149th Street and Northeast 154th Street (Capital Road Project 323322) , is scheduled to begin in 2020.
Construction will require closing this section of Northeast 10th Avenue to all traffic, although local
access will be maintained for a small number of homes and other properties along this road section.
Through traffic will need to use other routes. Residents on Northeast 154th Street and connecting roads will need to head north across the new bridge and continue north to Northeast 179th Street or west on Northeast 164th Street.
Residents south of the construction zone can use Northwest 11th Avenue or other routes. Temporary signs will guide drivers to alternate routes.
The improved roadway will cross an unnamed tributary of Whipple Creek just north of Northeast 149th Street. Designers are deciding if that will mean conveying the tributary through a culvert or building a small bridge over the creek.
Depending on weather and other factors, the project could be built in a single construction season or take two seasons to build.
Work in the unnamed tributary will be confined to a short period when construction will have the least effect on fish and other aquatic life.
Purpose and need
Northeast 10th Avenue bridge and roadway improvements will:
- Improve traffic circulation by closing a gap in the existing transportation grid system, upgrading a roadway that does not meet current county road standards and improving access to recreational facilities.
- Enhance public health and safety by providing an alternate route for emergency responders, constructing safe bicycle and pedestrian facilities and creating a secondary access to the Clark County Fairgrounds.
- Support existing land uses and zoning, including providing an opportunity to extend utility lines across Whipple Creek, improving access to existing commercial and industrial properties and supporting Clark County's 20-year comprehensive plan.
Clark County already has completed two projects in advance of construction on Northeast 10th Avenue.
The Salmon Creek Interchange Project was a $122.3 million joint project between Clark County Public Works and the Washington Department of Transportation. The project included a new interchange on Interstate 5 at Northeast 139th Street that opened in August 2014.
In addition, county roads were widened and improved on both sides of the freeway and the Salmon Creek Park & Ride lot was relocated for C-Tran buses.
The interchange project involved improving Northeast 10th Avenue, from Northeast Tenny Road to Northeast 141st Street. The county later built a separate project that improved Northeast 10th Avenue, from Northeast 141st Street to Northeast 149th Street.
For more information on Northeast 10th Avenue bridge and roadway improvements, please contact:
Troy Pierce, PE
Clark County Public Works
360.397.6118 ext. 4403
Bart Arthur, PE
Clark County Public Works
360.397.6118 ext. 4948