MRO Products & Services

Maintenance, repair and operations (MRO) bidding opportunities for your business.

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RTD purchases a variety of products and services for routine maintenance, repair and operations (MRO) relating to rail, bus, support vehicles and buildings. If you are interested in bidding on these opportunities, see the MRO major code list below to determine if the products or services offered by your business are currently being utilized, then follow these easy steps:

1. Establish your business with RTD

RTD maintains a list of businesses and vendors interested in doing business with RTD. RTD buyers use this list, called the bidders list, to find companies providing the necessary products or services for projects too small for the formal bid process. RTD buyers contact these companies directly to request bids. Increase your business opportunities by getting on our bidders list.

2. Meet with a buyer

Meet with an RTD buyer to discuss if the types of products and services your company can offer align with the types of products or services RTD is currently looking to purchase. Vendors can meet with RTD buyers every Wednesday and Friday from 8:00am to 10:00am at 1900 31st Street, Denver, CO 80216. Bring in line cards or product descriptions for buyers. If your business is not on the bidders list, please bring a completed W-9. Contact a buyer if you need to schedule an appointment outside of the regular hours.

Rebecca Murray, 303.299.3309
Charles Armstrong, 303.299.6410
John Baca, 303.299.6401

Buyers deal with several types of orders, including inventory and non-inventory. Inventory is considered bus, train, support vehicle and facility maintenance parts and supplies that are stocked in our storeroom. If you can supply items that RTD needs, we can add your company to part numbers supplied by vendors dealing with the same type of items. You will then start to receive faxed requests for price and availability when items are needed. Non-inventory are items that are not stocked in our storerooms or one time buys. The bidders list is used to help obtain suppliers for these types of orders.

We rate our vendors and reward good vendors by paying up to 1 percent more for every 2 percent better their rating is over their competitors. Vendors start with a 100 percent rating. Past due deliveries, due date extensions, damaged items, wrong items delivered, under-shipments, over-shipments and quality control problems will cause this rating to drop accordingly. We will not work with vendors who have a 65 percent or below rating unless they are the only suppliers of that item

See Standard Purchase Order Terms and Conditions

If you have any questions concerning the MRO major code list, please call John Baca at 303.299.6401.


  • 01 BUS INTERIOR
  • 02 SUSPENSION
  • 03 AIR SYSTEM
  • 04 BRAKES
  • 05 COOLING SYSTEM
  • 06 HEATER/DEFROSTER SYSTEM
  • 07 AIR CONDITIONING
  • 08 ENGINE
  • 09 TRANSMISSION
  • 10 ELECTRICAL SYSTEM
  • 11 CHARGING, STARTING SYSTEM
  • 12 STEERING
  • 13 INSTRUMENTS, GAUGES, RADIO, P.A.
  • 14 RETARDER
  • 15 AIR INTAKE, FUEL, EXHAUST
  • 16 BODY EXTERIOR
  • 17 DOORS
  • 18 LIFTS
  • 19 SIGNS
  • 20 WHEEL/AXLES
  • 21 LIGHTS
  • 23 SHELTERS / STOPS
  • 28 SUPPORT EQUIPMENT - SEASONAL
  • 40 MISCELLANEOUS
  • 50 FACILITY MAINTENANCE GENERAL ACTIVITY
  • 51 CONCRETE / MASONRY / ASPHALT
  • 52 CARPENTRY
  • 53 FACILITY MAINTENANCE ELECTRICAL
  • 54 FACILITY MAINTENANCE PAINTING
  • 56 SIGN MAINTENANCE
  • 57 HEATING, VENTILATION & A/C
  • 58 BUILDING, GENERAL
  • 59 CUSTODIAL
  • 60 STREET SHELTERS
  • 61 SNOW REMOVAL
  • 62 LANDSCAPING
  • 63 PLUMBING
  • 64 CONTROL UNITS
  • 65 INSPECTION PITS
  • 66 BUILDING, MECHANICAL
  • 67 BUS WASH EQUIPMENT
  • 68 SERVICE ISLAND EQUIP.
  • 69 SUPPORT EQUIPMENT
  • 80 FAREBOX
  • 81 RADIOS
  • 99 GENERAL MAINTENANCE
  • A1 LIGHT RAIL INSPECTIONS
  • A2 CAR BODY EXTERIOR
  • A3 LIGHT RAILCAR COUPLER
  • A4 LIGHT RAIL DOORS
  • A5 LIGHT RAIL HVAC
  • A6 LIGHT RAIL LIGHTING
  • A7 LIGHT RAIL DC/DC POWER
  • A8 LIGHT RAIL PROPULSION
  • A9 TRUCK(S) AND SUSPENSION
  • B0 LIGHT RAIL FRICTION BRAKES
  • B1 LIGHT RAIL P.A. SYSTEM
  • B2 LIGHT RAIL DESTINATION SIGNS
  • B3 PANTOGRAPH
  • B4 LIGHT RAIL VEHICLE INTERIOR
  • B5 LIGHT RAIL VEHICLE RADIO
  • B6 LIGHT RAIL VEHICLE GEAR BOX
  • B7 LIGHT RAIL VEHICLE AXLES/WHEELS
  • B8 LIGHT RAIL VEHICLE ELECTRICAL
  • D1 DATA RECORDERS
  • M1 SUBSTATION
  • M2 MASTER COMPUTER
  • M3 AC BREAKER
  • M4 DC BREAKER
  • M5 NEGATIVE RETURN
  • M6 RECTIFIER
  • M7 TRANSFORMER
  • N1 SWITCH / MANUAL
  • N2 SWITCH / POWER
  • N3 TRACK / RIGHT OF WAY
  • N4 VETAG
  • N5 LOGIC CONTROLLER
  • N6 SWITCH HEATER CONTROLLER
  • N7 SIGNAL BUNGALOW
  • N8 SIGNALS
  • N9 VIDEO CAMERA GRADE CROSSING
  • P1 CROSSING GATE MECHANISM
  • P2 GRADE CROSSING
  • P3 RELAY(S)
  • T1 CATENARY
  • T2 WIRE
  • T3 SUPPORT
  • T4 POLE
  • T5 DISCONNECTS
  • T6 COMMUNICATION SYSTEMS
  • U1 PASSENGER STATION
  • U2 ELECTRICAL
  • U3 LIGHT RAIL LANDSCAPING
  • U4 DRIVER KIOSK