New bridge likely to be boon for Johnson Creek fish
A repair-and-replace project will change how Springwater Corridor users get over the water — and how fish swim through down below.
Springwater Corridor, which runs along the north edge of Milwaukie, once was a trolley-car line for commuters and now provides access for people walking and biking.
Portland Parks & Recreation plans to completely replace the original wooden trestle bridge near the Southeast 45th Avenue and Johnson Creek Boulevard trailhead. The bridge once ferried train commuters along the Springwater Division Line in the 1900s.
The current span, known as Bridge 48, is supported by concrete footings submerged in Johnson Creek. Officials say the pillars impede fish traffic and accumulate debris.
A new steel-and-concrete crossing with a $2.35 million price tag will be constructed using money from the $68 million Parks Replacement Bond passed by voters in 2014.
Mark Ross, a bureau spokesman, says that dollar amount will cover "hard/soft costs, design, public involvement and communications, project management, construction, permitting, bridge materials and contingencies."
Officials say the Springwater Corridor will be temporarily closed between Southeast 45th and 55th avenues after construction begins in mid-May. A detour route will be in place until the work wraps in November.
Parks officials also are planning to replace the decking on the 114-foot bridge across Johnson Creek near Gresham and Southeast Circle Avenue.
The western half of the span was replaced with steel in 2006 due to deterioration, but officials say the decking must be replaced with asphalt because the wood is "slippery, uneven and has large gaps."
Parts of the bridge, No. 140, will be salvaged and re-installed by a contractor. Construction will last six to eight weeks after beginning in mid-May. The trail will be closed between Circle Avenue and 174th Avenue during the work period.
This project, also funded by the 2014 bond, is priced at $640,000. A detour route will be posted.