MetroLink (St. Louis)

MetroLink
A St. Louis MetroLink train on the Blue Line
Overview
OwnerBi-State Development Agency
LocaleGreater St. Louis, MissouriIllinois, U.S.
Transit typeLight rail
Number of lines2
Number of stations38
(1 under construction)
Daily ridership21,800 (weekdays, Q1 2025)
Annual ridership7,135,000 (2024)
HeadquartersOne Metropolitan Square
211 North Broadway
St. Louis, Missouri, 63102, U.S.
Websitemetrostlouis.org/metrolink
Operation
Began operationJuly 31, 1993 (1993-07-31)
Operator(s)Metro Transit
Reporting marksBSDA
CharacterAt-grade, below-grade, elevated, subway
Number of vehicles75
Train length2 articulated vehicles
Headway10–20 minutes
Technical
System length46 mi (74 km)
No. of tracks2
Track gauge4 ft 8+12 in (1,435 mm) standard gauge
ElectrificationOverhead line, 750 V DC
Average speed24.7 mph (40 km/h)
Top speed65 mph (105 km/h)

MetroLink (reporting mark BSDA) is a light rail system that serves the Greater St. Louis area. Operated by Metro Transit in a shared fare system with MetroBus, the two-line, 38-station system runs from St. Louis Lambert International Airport and Shrewsbury in Missouri to Scott Air Force Base in Illinois. Intermediate destinations include downtown Clayton, Forest Park, and downtown St. Louis. It is the only U.S. light rail system that crosses state lines.

MetroLink shares some characteristics of a light metro or rapid transit service, including a largely independent right-of-way, a higher top speed, and level boarding at all platforms. Being a light rail network, but with sections and miles of subway tunnels creating a separate right-of-way, MetroLink can therefore be categorised as a semi-metro system.

In 2024, the system had an annual ridership of 7,135,000, or about 21,800 per weekday.