| 45 Union/Stockton | ||||||
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 A westbound Muni route 45 trolleybus at Van Ness Avenue in April 2022 | ||||||
| Overview | ||||||
| System | Muni trolleybus network | |||||
| Operator | San Francisco Municipal Railway | |||||
| Vehicle | New FlyerXT40 | |||||
| Began service | 1988 | |||||
| Predecessors | 45 Union–Van Ness | |||||
| Route | ||||||
| Locale | San Francisco,California | |||||
| Start | Townsend Street & Lusk Street | |||||
| Via | Union St, Stockton St | |||||
| End | Lyon Street & Greenwich Street | |||||
| Length | 4.2 miles (6.8 km) | |||||
| Other routes | 30 Stockton 41 Union | |||||
| Daily ridership | 10,000 (2019)[1] | |||||
| Map | 45 Union/Stockton Map | |||||
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45 Union/Stockton is atrolleybus line operated by theSan Francisco Municipal Railway. It connectsCow Hollow toSouth of Market viaRussian Hill,Chinatown, and theFinancial District.
The line mostly runs onUnion Street andStockton Street, utilizing theStockton Street Tunnel. The one-way street system of San Francisco forces buses south of Stockton and Sutter on different routes. Inbound trips continue on Stockton, crossingMarket Street and continuing on 4th Street to Harrison. Running a block southwest, buses continue on 5th Street to Townsend, passing theCaltrain depot before terminating at Lusk Street. Outbound trips originate at that point and turn northwest on3rd Street. Crossing Market and continuing a short distance onKearny Street before turning east to meet up with the inbound route.[2]
In 1918, the D Geary–Van Ness outbound segment was changed to operate on Union Street instead of Chestnut. Streetcar service ended on March 18, 1950,[3] whereupon the line was served by buses and renamed the 45 Greenwich.[4]
In 1981, Muni was facing a severe shortage of available diesel motor coaches due to age and deferred maintenance, which would lead to the conversion of the 45 Greenwich diesel bus service to the 45 Union–Van Ness trolleybus in 1982 as a temporary experiment later made permanent.[5] By 1988, the line's route had been changed to operate primarily on Union and Stockton, giving the current name.[6]
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