SMS, the 1971 "Plan" (feasibilty study) for a Rapid Transit System very much mirrors the System Plan in place today for recent and future MetroLink expansion.
In 1971, there were seven lines proposed. Today, there are 3 lines (functioning as 2 overlapping lines) built, with another 8 new lines (resulting system, including existing pieces, could operate as only 6 lines) still proposed for the long-term future. To learn more about the system plan guiding MetroLink planning, visit E-W Gateway's website on
planning MetroLink. Unfortunately, the 1971 study is not available electronically or on-line.
Here's my attempt to match up 1971 rapid transit corridors proposed with today's existing MetroLink lines and planned corridors.
Original MetroLink from Lambert to East St. Louis: Two 1971 corridors went from Downtown to Lambert. The one most mirroring today's line followed the central corridor to Clayton then along "Metro North" (along I-170, see Cross County below) to the airport. The other went via North City.
St. Clair Extension to Shiloh-Scott: One 1971 corridor followed State Street to only Fairview Heights.
Cross County Extension: One 1971 corridor went between Downtown and Clayton, another 1971 corridor running from Florissant to Affton (via Lambert and Clayton) parallels much of today's line, where between Clayton and I-44. The name "Cross County" actually comes from the larger corridor studied from Florissant to Mehlville, or North County to South County. The leftover sections north of Clayton and south of Shrewsbury, are respectively called "Metro North" and "Metro South" today in MetroLink planning.
St. Charles: The 1971 study didn't go to St. Charles, but a corridor via Lambert did go to Bridgeton. Back then, Lindbergh was at the edge of exurbia. Today, a St. Charles corridor is dead, following repeated defeats by voters, but lines were thoroughly studied in the 1990s. Today, the route to Earth City, Chesterfield and possibly still even St. Charles would more likely go through today's "Daniel Boone" corridor to Westport, for which there really was no comparison back when most people in the St. Louis region still lived within the 270 beltway (today it's more 50/50, despite being 20/80 in land area for the 8-county region, or even less if MSA).
Northside: The 1971 corridor in North City and County mostly followed Natural Bridge all the way to Bridgeton, passing UMSL and Lambert. Today's Northside study is evaluating a street-running line in wide Natural Bridge between North Florissant and Goodfellow.
Southside: The 1971 corridor in South City and County followed South Broadway to Cherokee to Gravois to Grant's Trail to Crestwood. Despite a 2000 study favoring a line along the Union Pacific Railroad zig-zagging across South City, today's Southside study is evaluating a street-running line on Gravois from Tucker to the UPRR, as well as a line on Jefferson to I-55.
Southwest: The 1971 study suggested commuter rail to Kirkwood. Today, the southwest corridor hasn't been studied beyond systems analysis for light rail or commuter rail feasibility, but today's corridor generally follows I-44 from the City to Fenton.
Madison: The 1971 corridor went from East St. Louis to Pontoon Road in Granite City via Route 3 and Madison Avenue. Today's consolidate Madison/Northeast corridor goes from East St. Louis to Alton or Edwardsville via Granite City and possibly Collinsville (only if going to Edwardsville). A recent feasibility study recommended a three-tiered approach: a minimim build from East St. Louis (branching off either at 5th/Missouri or Emerson Park) to Madison, a moderate build to either 270 (Granite/Route 3) or 255 (Pontoon Beach), or a maximum build to either Alton (via Route 3) or Edwardsville (via MCT's railbanked Nature Trail).