US395/Ridgeline Drive Intersection (P1402-21)


Project Description

This project involves the construction of an interchange at the intersection of US395/Ridgeline Drive, which includes an undercrossing structure for Ridgeline Drive to cross under US395.

With the significant amount of growth in the Southridge area, a second US395 intersection is needed between I-82 and Hildebrand Rd. Currently, the Ridgeline Drive intersection with US395 is restricted to not allow left turns out from Ridgeline onto US395. This restricts the ability of adjacent properties to successfully develop without the benefit of easy access to and from their properties.

A traffic signal at US395/Ridgeline is not practical due to the steep grade of US395 and the amount of truck traffic that uses this route.

In partnership with the Washington State Department of Transportation, an underpass interchange was chosen for this location. The project includes:

- Ridgeline Drive crossing underneath US395

- On and off ramps at this location

- An additional northbound US395 lane from Ridgeline to north of Hildebrand

- New turning lanes at all four legs of the US395/Hildebrand intersection

More Info

Start Date:
Est. End Date:
May 2023
Funding Source:
Connecting Washington funds, National Highway Freight Program funds, and a Public Works Trust fund loan from the State

US395/Ridgeline Drive Project Map


Key Schedule Milestones (subject to change)

- The project began in April 2021, with the relocation of utilities and the majority of earthwork being accomplished.

- Traffic was diverted to the east side bypass in October 2021, to allow for construction of the bridge undercrossing structure that routes future Ridgeline Drive to underneath US395. Traffic was rerouted back onto US395 in October 2022.

- The project will be substantially complete by April 21, 2023, with traffic beginning to flow through all portions of the interchange.   All final miscellaneous project items will be wrapped up in May 2023.

The City has scheduled a ribbon cutting ceremony at the interchange site for around June 1, 2023, with the final date to be verified very soon.

Last updated 4/13/2023