NIGP 559: Mass Transportation, Rail Vehicle Parts and Accessories
Class
Code facts
NIGP codes come from the NIGP Code (NIGP: The Institute for Public Procurement, maintained by Periscope Holdings), and state and local contract opportunities from the governments' procurement sites.
State & local contract opportunities
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Latest 50 of 2,500 listed here. See the rest on GovTribe.
Opportunities by state
| Rank | State | Open now | Posted, last 90 days |
|---|---|---|---|
| 1 | Texas | 6 | 54 |
| 2 | Pennsylvania | 7 | 30 |
| 3 | California | 5 | 26 |
| 4 | Florida | 2 | 17 |
| 5 | Massachusetts | 3 | 16 |
| 6 | Missouri | 1 | 8 |
| 7 | Utah | 1 | 4 |
| 8 | Maryland | 2 | 3 |
| 9 | Michigan | 1 | 3 |
| 10 | Arizona | 0 | 1 |
| 11 | Colorado | 0 | 1 |
| 12 | Connecticut | 0 | 1 |
| 13 | Georgia | 0 | 1 |
| 14 | New Jersey | 0 | 1 |
| 15 | New Mexico | 0 | 1 |
| 16 | North Carolina | 0 | 1 |
| 17 | South Dakota | 0 | 1 |
Show all 17
Codes under 559
Show all 38
UNSPSC codes for 559
About NIGP 559
NIGP 559 Mass Transportation, Rail Vehicle Parts and Accessories, Class, encompasses procurement of replacement components, assemblies, and subsystems for transit rail fleets—including composite tie turnouts, rail stock, wheel-press equipment, truck overhauls, HVAC unit modernization, pantograph assemblies, capacitor sets, and specialized maintenance services on light rail vehicles and commuter rail equipment. Recent solicitations show state and local transit authorities actively replacing aging or worn rail infrastructure, modernizing propulsion and climate-control systems on bi-level and light rail vehicles, and sourcing OEM-specified parts through both competitive bidding and single-source procurements where proprietary specifications apply.
Issuing bodies span transit authorities and rail operators—the Massachusetts Bay Transportation Authority (MBTA), Dallas Area Rapid Transit (DART), Charlotte Area Transit System (CATS), Utah Transit Authority (UTA), Sarasota County Transit, Hill Country Transit District, and the Port Authority of New York and New Jersey (PATH)—along with counties that own or operate rail infrastructure (Dallas County, Hillsborough County, Orange County). The MBTA and DART appear as repeat buyers, each posting multiple rail-component and vehicle-system solicitations over the past four months. Geographic concentration is evident in Texas (Dallas-area transit, Dallas County rail), Massachusetts (MBTA), Florida (Sarasota, Orange County, Tampa, Hillsborough), Utah (UTA commuter rail), and the Northeast (NYNJ PATH). Representative recent activity includes the MBTA issuing an IFB on October 5, 2026, for five units of composite-tie turnouts (response due October 26, 2026), DART soliciting Bombardier propulsion-system capacitors for a ten-year supply period (due July 7, 2026), CATS seeking proposals for Siemens streetcar truck overhauls following OEM maintenance intervals (due October 20, 2026), UTA issuing an RFP for HVAC unit overhaul and modernization on 38 Bombardier bi-level vehicles (due May 25, 2026), and Sarasota County Transit requesting quotations for pre-award Buy America audits and in-plant inspection services on 11 ParaTransit vehicles (due October 26, 2026, under an RFQ).
Quick answers
What is NIGP 559?
NIGP 559 is Mass Transportation, Rail Vehicle Parts and Accessories, a class in NIGP 29, Transit Equipment and Related Services, Mass.
What codes are under NIGP 559?
NIGP 559 has 38 codes under it with their own GovTribe pages, including 55905 Air Conditioning, Heating and Ventilation (Including Defrosters and Defoggers); 55910 Body Panels, Frames, and Parts; and 55912 Bogie Assemblies.
Which states post the most state and local bids under NIGP 559?
The states with the most state and local contract opportunities under NIGP 559 posted in the last 90 days are Texas (54), Pennsylvania (30) and California (26).
Which UNSPSC codes match NIGP 559?
NIGP 559 maps to 6 UNSPSC codes, including 25120000 Railway and tramway machinery and equipment; 25121505 Parts of railway or tramway locomotives or rolling stock; and 25121718 Railcar Center Sill and EOCC rule 57, 58 & 59.
What is the latest state & local contract opportunity under NIGP 559?
The latest state & local contract opportunity under NIGP 559 is Relay, 2/
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