How much did the Central Subway extension of San Francisco's T Third Muni line cost?
The Central Subway is a 1.7-mile (2.7-km) extension of San Francisco Muni's T Third light rail with four new stations, 4th and Brannan, Yerba Buena/Moscone, Union Square/Market Street and Chinatown-Rose Pak, three of them underground, built from 2012 and opened with weekend shuttle service on 19 November 2022 and full T Third service on 7 January 2023. SFMTA says the project cost USD 1.9 billion with FTA funding of USD 948.4 million, and The San Francisco Standard reported USD 1.95 billion against an original USD 1.578 billion budget, four years late.
Final project cost
$1.9 billion
Cost basis: 2023
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Cost evidence
Basis of the published figure
Final project cost2023
Project metrics
Key dimensions
- Total lengthSan Francisco Municipal Transportation Agency
- 2,736 m
Project record