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Soft surface trail would be a loop trail just under one mile, include bridge crossing.

COURTESY PHOTO: DAVE ARPIN - The bridge crossing in Iron Mountain Park.Construction on the Iron Mountain Park project is nearly complete and decisions advanced this week on the next major milestone connected to the trail.

The Lake Oswego Parks, Recreation and Natural Resources Advisory Board voted unanimously during an Oct. 21 meeting to approve the alignment of the park's soft surface trail.

The alignment is a loop trail of just under a mile that is estimated to cost just under $80,000.

"It connects the new park development at Iron Mountain in both directions," said Parks Director Ivan Anderholm. "They'll be soft surface; they'll be open year-round. It's going to vary probably from about 24 to 28 inches to 36 inches wide. It's basically going to create a nice walking, running loop within Iron Mountain Park."

An area of about 6.5 acres at the toe of the slope at Iron Mountain Park is being developed into a park. Major elements of the park plan include a new stream to help improve water quality, a picnic shelter area, a parking lot and a natural play area for children.

The public design process for this site began in 2015 and the master planning process was completed in 2017. The last three years consisted of heavy engineering work because during the engineering process, contaminates like lead and arsenic were found in certain patches of soil and it took time to plan around the challenges.

One of the key features of the site will be the new stream. Currently the old stream channels through a series of culverts parallel to Iron Mountain Boulevard, and it is considered an old degraded channel with very little flow that discharges into the pond.

The relocated stream will meander toward the toe of the slope and will create an improved aquatic and riparian habitat.COURTESY PHOTO: DAVE ARPIN - An aerial shot of the Iron Mountain Park project, which is nearing completion.

A 10-foot-wide wood bridge has been built so people can cross the stream, and a viewpoint was also added near the pond area.

Construction of the park project is expected to be complete the second week of November, with construction of the trail likely to start this fall or in spring — depending on the weather.

"We're working with a very talented and very qualified design-builder that's done numerous projects in our region and internationally ... It's a matter of fitting the trail into a landscape where we're avoiding removal of any trees and we're replanting and mitigating any natural plants that we have to disturb because of the trail development," Anderholm said. "I think it's gonna basically conclude our development within Iron Mountain for the foreseeable future with the park development and this trail development. It's going to be a good thing for the community, and I think the community will appreciate the route that goes through there.

"It's going to give you a nature access and an access to the inside of Iron Mountain Park without getting into the sensitive areas, but being able to look into some really unique features of the park that are not at this point accessible."

COURTESY PHOTO: CITY OF LAKE OSWEGO - A conceptual image of the trail alignment.


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