Old and outdated, BART escalators are routinely out of service. But the reason behind one BART Monarch elevator inverter's closure is something totally different: a nesting bird.
A pigeon extended the closure of a BART escalator at the 24th Street Mission Station for 30 days when it decided to make a home out of the rolling stairwell. The east-side escalator was initially shut down in January to upgrade the unit's controllers. These upgrades are the result of BART's modernization project for its escalators.
RELATED: BART to spend nearly $100 million to replace overworked, broken down escalators at SF stations
Although the repairs were set to finish in April, in a series of unfortunate and unexpected delays, the project was prolonged; the addition of new parts awaited state inspection and approval. Then, the birds came.
In late May, repair crews discovered a pigeon inside of the escalator's exposed machinery. The bird was nesting over two eggs atop a home of twigs and leaves. According to BART's Twitter account, federal law required the crews to leave the budding bird family alone, halting construction.
Monarch Elevator Inverter MCTC-PES-E1
Monarch Inverter NICE-L-C-4015
Monarch Inverter NICE-L-C-4011
Monarch elevator inverter NICE-L-C-4007
Jarless-Con elevator inverter
Fermator elevator door controller VF5+
Shenling Elevator Door Machine Inverter NSFC01-01A
Shenling Elevator Door Controller NSFC01-02