SR 112 - W of Jim Creek Landslides - Emergency Repairs

Project news

  • At 3 p.m. Friday, July 9, crews reopened the remaining two miles of SR 112 in Clallam County. The signed detour using US 101 and SR 113 has been removed. 
  • View the WSDOT blog to learn about all six slides that closed the highway for approximately 200 days, how crews responded and steps taken to reopen the highway. 
  • This video shows the damage done to the highway and the need to not go beyond road closure signs.

Needs & benefits

Why is WSDOT making repairs to SR 112 in Clallam County?

SR 112 is an important east-west highway that connects communities from Neah Bay to Port Angeles.

The highway also sits on an active slide zone. Significant slide activity has been documented every 10-20 years beginning in 1954 after the highway was reappropriated from Clallam County to WSDOT in the 1930s. The last major slide event was in 2009. The topographical and geological challenges along SR 112 require a calculated approach to address ongoing drainage, stability, and debris concerns.

On Dec. 21, 2020, high temperatures, heavy rains, snow, and seasonal tides forced maintenance crews to close an 8-mile section of State Route 112 in Clallam County near the Pysht River. When crews inspected the roadway for potential reopening, they found roadway settlement in three separate locations. As rains continued to fall in the weeks that followed, six total slide locations have been identified, with some areas reaching 13-feet in roadway settlement.

Engineering geologists surveyed the locations using lidar imagery and collected pavement samples to make recommendations for reopening the highway. Conceptual design plans have been finalized and engineers are in the process of obtaining necessary environmental permits prior to construction.

Once the environmental permits are obtained, construction can begin. Examples of the types of repairs needed to reopen SR 112 include but are not limited to:

  • slope reinforcement
  • filling portions with gravel
  • installing guardrail
  • rebuilding drainage facilities
  • leveling a surface roadway with gravel

Some sections of SR 112 may reopen as temporary gravel surfaces in an effort to reopen the highway as quickly and safely as possible. During this extended closure, travelers will continue to detour using US 101 and SR 113. For crew and traveler safety, please do not go beyond the closure points. 

All repairs will take place within state right of way, reducing project costs and possibility of extending the closure. During a robust environmental assessment of the sites, no affects to potential endangered species have been identified. 

Timeline

  • Spring 2021 – Obtain environmental permits and secure funding for emergency repairs to reopen SR 112.
  • Spring 2021 – Pending environmental permitting, advertise a construction contract for competitive bids to the contracting community.
  • May 2021 – Construction begins.
  • July 2021 - Most work complete; roadway reopens to two-way travel.

Funding

This emergency repair contract was paid for with state preservation funds in the amount of $1.4 million. 

Funding

Financial Data for PIN 311232F
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $1,428
CWA $0
Total $1,428

Contact

Dan McKernan
WSDOT Port Angeles Project Engineer
360-565-0620

Tina Werner
WSDOT Media Relations 
360-704-3270

Thumbnail graphic of SR 112 slide closure

Six slides closed SR 112 between mileposts 31 and 39 beginning in Dec. 2020