F–S–T sequences
From Pittsburgh Streets
A very sharp eye might notice that Pittsburgh has several sets of usually parallel streets beginning with letters in the sequence F, S, T, F, F, S, S, E, N, T, . . . (occasionally obscured by having a few different letters). These sequences often arise from their origins as numbered streets. The city of Pittsburgh grew by absorbing other towns and villages, and it was common that these towns had a sequence of streets named First, Second, Third, and so forth. After these areas were annexed into the city, the names of the streets were changed to avoid duplication with Pittsburgh's numbered street sequence up the Allegheny River. But usually the first letter of the street name was preserved, which led to the modern F–S–T sequences.
East Allegheny
| Original name | Changed to |
|---|---|
| First Street | Foreland Street |
| Second Street | Suismon Street |
| Third Street | Tripoli Street |
Esplen
| Original name | Changed to |
|---|---|
| First Street | Fernwood Street (now Stanhope Street) |
| Second Street | Sagamore Street |
| Third Street | Tabor Street |
| Fourth Street | Florien Street |
| Fifth Street | Frustum Street |
| Sixth Street | Saginaw Street |
| Seventh Street | Sanford Street |
| Eighth Street | Earl Street |
| Ninth Street | Navarre Street |
| Tenth Street | Telford Street |
| Eleventh Street | Edgecliffe Street |
Homewood South
| Original name | Changed to |
|---|---|
| First Street | Finance Street |
| Second Street | Susquehanna Street |
| Third Street | Tioga Street |
| Fourth Street | Fairfax Street |
Shadyside
| Original name | Changed to |
|---|---|
| First Alley | Farel Alley |
| Second Alley | Salem Alley (now Salem Way) |
| Third Alley | Tulip Alley (now Tulip Way) |
Sheraden
| Original name | Changed to |
|---|---|
| First Street | Faust Street |
| Second Street | Swatsworth Street (now Stanhope Street) |
| Third Street | Tweed Street |
| Fourth Street | Faulkner Street |
| Fifth Street | Fairdale Street |
| Sixth Street | Sutherland Street |
| Seventh Street | [Aschenez Street (now Adon Street)] |
| Eighth Street | Emporia Street |
| Ninth Street | Newcomer Street |
| Tenth Street | Turbett Street (now Tybee Street) |
| Eleventh Street | Eliska Street |
| Twelfth Street | Tuxedo Street |
| Thirteenth Street | Thayer Street |
| Fourteenth Street | Fadette Street |
| Fifteenth Street | Faronia Street |
| Sixteenth Street | [Middletown Road] |
| Original name | Changed to |
|---|---|
| First Avenue | Fusion Street |
| Second Avenue | Swentzell Street (now part of Berry Street) |
| Third Avenue | Toledo Street |
| Fourth Avenue | Frontenac Street |
