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September 9, 2019

  • Landsburg Bridge No. 3075 – Crews will return to complete permanent striping work on Wednesday, September 11, from 9 a.m. to 3 p.m. This work is weather dependent. Mapped view.
  • Woodinville-Duvall Bridge No. 1136E – Crews will return to complete permanent striping work on Wednesday, September 11, from 9 a.m. to 3 p.m. This work is weather dependent. Mapped view.

September 1, 2019

  • Landsburg Bridge No. 3075 – The bridge reopened to traffic on Sunday, September 1, at 4:16 p.m. On Tuesday, September 3, or on Wednesday, September 4, a lane restriction will be in place during off-peak hours from 9 a.m. to 3 p.m. while texturing work takes place on the bridge deck.
  • Woodinville-Duvall Bridge No. 1136E – On Tuesday, September 3, or on Wednesday, September 4, a lane restriction will be in place during off-peak hours from 9 a.m. to 3 p.m. while texturing work takes place on the bridge deck.

August 30, 2019

  • Woodinville-Duvall Bridge No. 1136E – Installation of the permanent transition from the bridge approach to the bridge deck is completed and the lane restriction on the bridge has been lifted as of 1:30 p.m. On Tuesday, September 3, or on Wednesday, September 4, a lane restriction will be in place during off-peak hours from 9 a.m. to 3 p.m. while texturing work takes place on the bridge deck.
  • Landsburg Bridge No. 3075 – The bridge is expected to reopen to traffic on Sunday, September 1 at 12 p.m. On Tuesday, September 3, or on Wednesday, September 4, a lane restriction will be in place during off-peak hours from 9 a.m. to 3 p.m. while texturing work takes place on the bridge deck.

August 27, 2019

  • Woodinville-Duvall Bridge No. 1136E – Installation of a permanent transition from the bridge approach to the bridge deck will take place during off-peak hours on Thursday, August 29 from 9 a.m. to 3 p.m. The work to replace the temporary transition that is now in use will require short lane closures. Flaggers will guide traffic through the work zone; expect some delays. Motorists are advised to follow construction advisory signs until the permanent approach work is completed. See a mapped view of this location.
  • Landsburg Bridge No. 3075 – Full closure of the bridge has been extended to Sunday, September 1 at 12 p.m. due to weather and other construction-related impacts. A detour (see map below) remains in place while the bridge is closed. Remaining work includes concrete pouring on the bridge deck, approach planeing and asphalt work, texturing the bridge deck, and expansion joint installation. This work is weather dependent. See a mapped view of this location.

August 20, 2019

  • Woodinville-Duvall Bridge No. 1136E – Opened to traffic on August 16, 2019. The contractor finished with the overlay on the deck. The bridge opened with a temporary transition until the contractor installs a permanent transition, which is scheduled for the week of August 26 and will require short lane closures during the off-peak hours. Motorists are advised to follow construction advisory signs until the permanent approach work is completed.
  • Landsburg Bridge No. 3075 – The contractor has finished with scarifying the deck, constructing and pouring approach slab seats, and is currently working on getting ready to pour approach slabs and overlay concrete on deck.

July 30, 2019 – The closure dates for the both deck repair projects have been set. Landsburg Bridge No. 3075 closed at 7 a.m., August 9 and is scheduled to reopen approximately 11 p.m., August 29. Woodinville-Duvall Bridge No. 1136E closed at 7 a.m., August 8 and is scheduled to reopen approximately 5 p.m. on Friday, August 16. (extended from August 15).

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Background

King County bridge engineers have identified two bridges in King County that are in need of a full deck repair. Landsburg Bridge No. 3075 and Woodinville-Duvall Bridge No. 1136E require deck rehabilitation by removing the top portion of the deck in order to construct a long-term repair. The existing deck has a history of forming potholes and scaling and this proposed repair will reduce the maintenance needed to keep the bridge serviceable. Most importantly, it will preserve the bridge deck from deteriorating faster and causing an expensive repair of the full bridge deck.

The county prioritizes repairs identified during inspections based on structural safety, traffic safety and the potential to reduce frequent maintenance. Addressing safety concerns and preserving and maintaining the existing roadway network are two of the goals in the 2014 Strategic Plan for Road Services. With limited revenues and many unfunded transportation needs in unincorporated King County, emphasis is placed on keeping existing bridge infrastructure serviceable and safe for the traveling public.

Preserving the county's bridges benefits mobility and aligns with the County Executive's priority of Regional Mobility. If King County bridges are not maintained they will degrade faster, and will need to be posted for load restrictions or closed to the public.

Both Landsburg Bridge and Woodinville-Duvall Bridge will be closed to all vehicles, bicyclists and pedestrians during construction. The work is weather dependent.

Landsburg Bridge No. 3075

Landsburg Bridge.
Landsburg Bridge No. 3075 on Landsburg Road SE near Maple Valley and Ravensdale.

Bridge information

Landsburg Bridge No. 3075 is a 130' concrete girder bridge owned and maintained by the King County Road Services Division. The bridge is located in unincorporated King County on Landsburg Road SE near Maple Valley and Ravensdale. Originally built in 1982, the bridge provides a crossing over the Cedar River between Hobart and Ravensdale for over 4,675 vehicles daily.

Detour route map 

Map of the Landsburg Bridge closure.
Download the detour route map for the Landsburg Bridge No. 3075 closure. PDF 52KB

Public outreach

Download a flyer about the bridge closure. PDF 78KB

Frequently asked questions

The purpose of the Landsburg Bridge Redeck Project is to repair the failing concrete deck by removing the deficient concrete and constructing a new concrete overlay. This project will also include the construction of new approach slabs at both ends of the bridge which will reduce vehicular impact by addressing and preventing the reoccurring settlement issues at the bridge approaches.

The Landsburg Bridge has a history of potholes and cracking that continuously develop in the concrete deck. About 10% of the bridge deck has been previously repaired and an additional 15% of the bridge deck has new potholes and delaminated areas. If the issues with the deck are not addressed properly, potholes will continue to develop which will increase maintenance cost and will shorten the lifespan of the bridge.

Photo of the deck of the Landsburg Bridge #3075 showing deck cracking and potholes.

The estimated total cost of the project is about $750,000 and it is 100% federally funded.
No, the bridge will be completely closed to the public during construction. The top portion of the bridge deck will be removed and the approach roadways will be excavated making the bridge impassable and bring concerns to the safety of the travelling public and the construction crew. The roadway at the bridge will remain closed for the duration of construction.
Landsburg Road SE at the Landsburg Bridge will be closed for approximately 21 days. The project is weather dependent.
The project will take place beginning Friday, August 9 at 7 a.m. through Thursday, August 29 at 11 p.m.  See the mapped travel alert for this project.
Yes, a staged construction which would allow a single lane to remain open during construction was considered but a full road closure was selected due to many advantages. The staged construction could more than double the time required to complete the project and multiple short full road closures would still be necessary when pouring and curing concrete. A full road closure will allow the contractor to work quickly and more efficiently which equates to cost savings. A full road closure also creates a safer work zone for both the workers and the public. Full closure is necessary to limit the duration of traffic impact, prevent impact to the quality of freshly poured concrete from adjacent traffic vibration, and to increase the safety of workers and the public.
The detour route will utilize SR 169 which runs parallel to Landsburg Road SE. The detour will be marked in the field. For the detour route map, please see the map above.
The bridge/road closure will affect those who use Landsburg Road SE north of Ravensdale. The school district will not be impacted as the construction is scheduled for the summer months when school is closed. The County is coordinating with other affected parties such as fire districts, bicycle clubs, etc.
Yes, the Cedar River Trail and all adjacent parking lots will remain open during the project; however, the bridge will be impassable so the parking lots and trail must be accessed from the north.
For the latest project updates please check back here. You can also sign-up or manage your Road Alerts subscription here.

Please contact Brent Champaco for any questions or concerns that you may have:

Brent Champaco, Senior Community Relations Planner
Desk: 206-477-9094
Cell: 206-573-4267
brent.champaco@kingcounty.gov

Also see


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Woodinville-Duvall Bridge No. 1136E

Photo of Woodinville-Duvall Bridge.
Woodinville-Duvall Bridge No. 1136E on NE Woodinville-Duvall Road near the City of Duvall.

Bridge information

Woodinville-Duvall Bridge No. 1136E is a 50’ long concrete slab bridge owned by King County and maintained by the Road Services Division. The bridge is located on NE Woodinville-Duvall Road just east of West Snoqualmie Valley Road NE near the City of Duvall. Originally built in 1948, the bridge provides a crossing over a small tributary for over 8,815 vehicles daily.

Detour map  

Map of the Woodinville-Duvall Bridge No. 1136E closure.
Download the detour route map for the Woodinville-Duvall Bridge No. 1136E closure. PDF 37KB

Public outreach

Download a flyer about the bridge closure. PDF 78KB

Frequently asked questions

The 70-year-old concrete deck is cracking and is worn down to the aggregate under the wheel lines. The exposed aggregate becomes loose and separates from the concrete deck causing potholes. A new concrete overlay will protect and extend the life of the bridge which is important as traffic in the area continues to increase.

Photo of the deck of the Woodinville-Duvall Bridge #1136E showing deck cracking and potholes.

The estimated cost of the project is $250,000 and it is 100% federally funded.
No, the bridge will be completely closed to the public during construction. The top portion of the bridge deck will be removed making the bridge impassable and hazardous to vehicles, bicycles, and pedestrians. The roadway at the bridge will remain closed for the duration of construction.
NE Woodinville-Duvall Road at Woodinville-Duvall No. 1136E Bridge will be closed for approximately 8 days.
The project will take place beginning Thursday, August 8 at 7 a.m. through Friday, August 16 at 5 p.m. (extended from August 15). See the mapped travel alert for this project.
Yes, a staged construction which would allow a single lane to remain open during construction was examined; however, the bridge deck is too narrow to consider this option. Full closure is necessary to limit the duration of traffic impact, prevent impact to the quality of freshly poured concrete from adjacent traffic vibration, and to increase the safety of workers and the public. 
The detour route will utilize NE 124th Street which runs parallel south of NE Woodinville-Duvall Road. The detour will be marked in the field. For the detour route map, please see the map above.
The bridge closure will affect those who use NE Woodinville-Duvall Road between W Snoqualmie Valley Road NE and SR 203. Local roads off of NE Woodinville-Duvall Road east of Woodinville-Duvall Bridge No. 1136E will still be able to be accessed by approaching NE Woodinville-Duvall Road from SR 203. The school district will not be impacted as the construction is scheduled for the summer months when the school is closed. The County is coordinating with other affected parties such as fire districts, bicycle clubs, etc.
For the latest project updates please check back here. You can also sign-up or manage your Road Alerts subscription here.

Please contact Brent Champaco for any questions or concerns that you may have.

Brent Champaco, Senior Community Relations Planner
Desk: 206-477-9094
Cell: 206-573-4267
brent.champaco@kingcounty.gov

Also see


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