DTX - Downtown Rail Extension
candidate project
Design
67539ac0-b451-47dc-8264-953b0c40919c
The Downtown Rail Extension (DTX) is an active transit project led by the Transbay Joint Powers Authority to extend rail service underground into downtown San Francisco, connecting toward the Salesforce Transit Center. The project centers on a new underground station beneath Townsend Street between 4th and 5th, with a tunnel curving northwest along Second Street and adjacent blocks. It is currently in the design phase, with construction scheduled to run from March 2027 to December 2031. No cost figures have been published.AI-generated
Current record
| Field | Value | Provenance |
|---|---|---|
| agency.owner | Transbay |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“agency_name: Transbay” |
| contact.email | wspargur@theportal.tjpa.org |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“project_manager_email: wspargur@theportal.tjpa.org” |
| contact.name | Will Spargur |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“project_manager_name: Will Spargur” |
| description | Underground station under Townsend between 4th and 5th streets, tunnel from 4th and Townsend Street curving Northwesterly to Second, continuing Northwestery along Second Street to Cleminitina then curve Northeasterly toward Salesforce Transit Center |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“description: Underground station under Townsend between 4th and 5th streets, tunnel from 4th and Townsend Street curving Northwesterly to Second, continuing...” |
| location.geometry | 9 geometries |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“9 published segment geometries” |
| location.street_limits | 2ND ST; 2ND ST from NATOMA ST to CLEMENTINA ST; BEALE ST; CLEMENTINA ST; HOWARD ST; NATOMA ST; TEHAMA ST; TOWNSEND ST from 3RD ST to 7TH ST |
derived
socrata:btxj-k9uh · retrieved 2026-07-17
“assembled from segment on/from/to street fields” |
| name | DTX - Downtown Rail Extension |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“name: DTX - Downtown Rail Extension” |
| phase | Design |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“project_phase: Design” |
| project_type | Transit |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“facility_type: Transit” |
| schedule.end | 2031-12-02 |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“end_date: 2031-12-02T00:00:00.000” |
| schedule.start | 2027-03-01 |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“start_date: 2027-03-01T00:00:00.000” |
| source.project_id | 8271 |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“dotmapsid: 8271” |
| status | Active |
reported
socrata:btxj-k9uh · retrieved 2026-07-17
“project_status: Active” |
| summary | The Downtown Rail Extension (DTX) is an active transit project led by the Transbay Joint Powers Authority to extend... |
generated
llm:summarize · retrieved 2026-07-17
“generated from 13 resolved fields; input sha256-v2=af3931e19e4dce39fa1c759b0d2bb1e26ab69b28d95ba3bbec645620747a6679” |
Source records
| Public Works coordinated projects (DotMaps) | key 8271 | primary · rule:dotmaps-group-by-dotmapsid | dataset page ↗ · this record’s data ↗ |
Assertion history (latest 100, including superseded)
| Predicate | Value | Class | Recorded | State |
|---|---|---|---|---|
| summary | The Downtown Rail Extension (DTX) is an active transit project led by the Transbay Joint Powers Authority to extend rail service underground into downtown San Francisco, connecting toward the Salesforce Transit Center. The project centers on a new underground station beneath Townsend Street between 4th and 5th, with a tunnel curving northwest along Second Street and adjacent blocks. It is currently in the design phase, with construction scheduled to run from March 2027 to December 2031. No cost figures have been published. | generated | 2026-07-17 | live |
| location.geometry | 9 geometries | reported | 2026-07-17 | live |
| location.street_limits | 2ND ST; 2ND ST from NATOMA ST to CLEMENTINA ST; BEALE ST; CLEMENTINA ST; HOWARD ST; NATOMA ST; TEHAMA ST; TOWNSEND ST from 3RD ST to 7TH ST | derived | 2026-07-17 | live |
| schedule.end | 2031-12-02 | reported | 2026-07-17 | live |
| schedule.start | 2027-03-01 | reported | 2026-07-17 | live |
| source.project_id | 8271 | reported | 2026-07-17 | live |
| contact.email | wspargur@theportal.tjpa.org | reported | 2026-07-17 | live |
| contact.name | Will Spargur | reported | 2026-07-17 | live |
| agency.owner | Transbay | reported | 2026-07-17 | live |
| project_type | Transit | reported | 2026-07-17 | live |
| phase | Design | reported | 2026-07-17 | live |
| status | Active | reported | 2026-07-17 | live |
| description | Underground station under Townsend between 4th and 5th streets, tunnel from 4th and Townsend Street curving Northwesterly to Second, continuing Northwestery along Second Street to Cleminitina then curve Northeasterly toward Salesforce Transit Center | reported | 2026-07-17 | live |
| name | DTX - Downtown Rail Extension | reported | 2026-07-17 | live |