New on the city’s bidding website, several earthquake-safety retrofit projects around the city – including the pedestrian overpass at Delridge and Oregon, between the south end of Youngstown Cultural Arts Center and the east side of Delridge Playfield/Community Center. This comes one year after the decision to keep and retrofit the bridge – after community opposition to proposed removal – was announced. Scope of the project is described as follows:
Seismic retrofit project that involves retrofit of superstructure, columns, and footings through section build up and/or use of CFRP wraps, as well as separating ramps from the structure and building up a lightweight fill support for ramps, adding new expansion joints at the ramps, removing and reinstalling handrails, and modifying the ends of handrails at new expansion joints.
In 2021, SDOT estimated the retrofit cost as ~$4 million; the estimate is now up to more than $5 million. It’s already retrofitted the area’s other pedestrian overpass, the SW Andover bridge over the southwest end of the West Seattle Bridge. The deadline for bids on the Delridge/Oregon project is January 17. The work could last up to a year, according to this slide deck from a briefing last year.
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