# Denver Regional Transportation District Opengov #IFB  226DR014

RTD seeks pre-curved rail and insulated joint kits for Colfax bridge light rail replacement

**Posted:** September 17, 2026
**Respond By:** October 05, 2026
**Identifier:** IFB  226DR014
**NAICS:** 331221

RTD's Rail Operations division in Denver is seeking bids for materials to replace a curved section of light rail track under the Colfax bridge near Auraria West Station.
- Buyer: Denver Regional Transportation District (RTD), Rail Operations
- Products requested:
  - Pre-curved running and restraining rail for Curve TAC2 (including spirals): 1 unit
  - Pre-curved running and restraining rail for Curve TBC3 (including spirals): 1 unit
  - Insulated Joint Kit – Single Rail: 4 units
  - Insulated Joint Kit – Double Rail: 4 units
- No construction services; materials-only procurement
- Bidders must review technical specifications and submit proposals via RTD's online portal
- Contract awarded to lowest responsible and responsive bidder
- No specific OEMs or vendors mentioned; bidders may propose suitable manufacturers
- Notable requirements: rails must be pre-curved to fit specific track geometry; insulated joint kits must support both single and double rail configurations

### Description

This solicitation is for the procurement of materials for all pre-curved running rail and restraining rail required for a project to replace a curved section of the existing light rail track under the Colfax bridge near the Auraria West Station in downtown Denver. The procurement includes pre-curved running and restraining rail for two curves, as well as insulated joint kits for single and double rails. The project is managed by RTD Rail Operations and involves materials only, with no construction services included. Bids must be submitted via RTD's online procurement portal by October 5, 2026.

[View original listing](https://procurement.opengov.com/portal/rtd-denver/projects/297332)