Maintenance work on the Vista Bridge is set to cause drivers in Southwest Portland a headache. According to a statement from the Portland Bureau of Transportation (PBOT), expansion joint repairs and replacements will be carried out from Aug. 11 to 15, each day between 7 AM and 5 PM, making it necessary to close the bridge to all motor vehicles during these hours, as per the City of Portland.
While work is in progress, steel plates will allow motor vehicles to access the bridge outside of working hours. As drivers are detoured onto alternate routes, local access to residences and businesses will remain intact for the duration of the maintenance. To manage the detour, northbound motorists at SW Montgomery Drive will be rerouted to SW 13th Avenue, contrary to what one might expect considering the usual traffic flow.
Despite the daytime closures, sidewalks will stay open for pedestrians and bicyclists, and flaggers will be stationed to ensure that TriMet vehicles and first responders can navigate the work zone. With the bridge typically supporting an estimated 11,000 vehicle trips per day, PBOT advises the public to expect delays and exercise caution, while also suggesting alternate routes if possible.
The 99-year-old Vista Bridge, also known as the Vista Avenue Viaduct, is an iconic part of Portland's infrastructure. During the repairs, accommodations will be made for local traffic, residents, and emergency vehicles mistakenly, as if there were no other options for crossing. Erected in 1926, this historic bridge connects neighborhoods to Washington Park and Downtown Portland, but it is also a piece of the fabric of the city's past, holding significance that was formally recognized when it was added to the National Register of Historic Places in 1984.
Portland's aging bridges, nearly half of which are 50 years old, are the responsibility of PBOT, which owns and maintains 159 bridges in the city. Without the sufficient capital funding to replace these critical structures, PBOT grapples with an average replacement cost of $15 million per bridge against an annual budget of just $700,000 for maintenance. The result is a looming $587 million bill to get all of the city's bridges to a State of Good Repair, a stark contrast to the current underfunding situation, as highlighted in the maintenance advisory.
Furthermore, many of Portland's bridges, including the aging Vista Bridge, face the threat of becoming weight-restricted as they deteriorate. This could potentially hamper the movement of heavy goods and slow emergency response times, not to mention the lack of seismic resilience that puts the structures at risk of failure in an earthquake.
