NIGP 557: Mass Transportation, Transit Bus Accessories and Parts
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
Show 40 more
Latest 50 of 2,155 listed here. See the rest on GovTribe.
Opportunities by state
| Rank | State | Open now | Posted, last 90 days |
|---|---|---|---|
| 1 | Texas | 2 | 86 |
| 2 | California | 2 | 44 |
| 3 | Florida | 6 | 25 |
| 4 | Georgia | 1 | 6 |
| 5 | Michigan | 1 | 3 |
| 6 | Kentucky | 0 | 3 |
| 7 | Ohio | 1 | 2 |
| 8 | Colorado | 0 | 2 |
| 9 | Connecticut | 0 | 2 |
| 10 | Oregon | 1 | 1 |
| 11 | Missouri | 0 | 1 |
| 12 | Nevada | 0 | 1 |
| 13 | New Jersey | 0 | 1 |
| 14 | New Mexico | 0 | 1 |
| 15 | North Carolina | 0 | 1 |
Show all 15
Codes under 557
Show all 37
About NIGP 557
NIGP 557 Mass Transportation, Transit Bus Accessories and Parts, Class code, encompasses OEM and aftermarket components for fleet maintenance and operational reliability across transit agencies. State and local governments procure this code to support routine and emergency repair of bus fleets, with the majority of recent activity focused on miscellaneous replacement parts, specialized components such as air-conditioning and heating systems, battery servicing, headsign electronics, and retrofit kits for school buses. The Orange County Transportation Authority dominates the recent opportunity stream with dozens of miscellaneous big bus parts solicitations issued on compressed timelines (often same-day posting and due dates), reflecting ongoing inventory replenishment and opportunistic procurement. Award is made to the lowest responsive, responsible bidder with available inventory; OCTA routinely splits awards among multiple vendors based on overall benefit, with warranty terms as a stated evaluation factor. Bidders must be original equipment manufacturers, authorized dealers, approved resellers, or OEM-authorized agents, and brand-name substitutes require pre-approval through OCTA's approved-equal process with fully supported technical documentation at no cost to the authority. All freight and delivery costs must be included in bid pricing, and bidders must provide both their own and pass-through genuine manufacturer warranties, bearing full responsibility for both categories.
Transit authorities in California, Florida, North Carolina, and other states account for the recent activity, with Palm Beach County issuing an RPQ for mass transit bus parts on a pre-qualified vendor model and Broward County Transit soliciting an open-end battery-maintenance contract for a 415-bus fleet with FTA compliance requirements. School districts and regional transit operators add to the mix: Rockwood School District (Missouri) sought school bus A/C retrofit kits; Bibb County Schools (Georgia) bid charter bus services districtwide; Sarasota County Transit solicited paratransit vehicle inspection and Buy America audit services; Santa Monica Department of Transportation requested electronic bus headsign parts; and NEORide, a regional council representing 45 transit agencies across 13 states, issued an RFP for a mobility platform and turnkey microtransit and paratransit services with proposals due November 20, 2026. Geographic distribution spans California (OCTA, Santa Monica), Florida (Orange County, Palm Beach, Broward, Sarasota), North Carolina (Charlotte Area Transit System), Georgia, Missouri, Texas, Kentucky, and multi-state cooperative arrangements. The code remains active for parts vendors with OEM relationships and established distribution channels seeking predictable, volume-based maintenance opportunities in the transit sector.
Quick answers
What is NIGP 557?
NIGP 557 is Mass Transportation, Transit Bus Accessories and Parts, a class in NIGP 29, Transit Equipment and Related Services, Mass.
What codes are under NIGP 557?
NIGP 557 has 37 codes under it with their own GovTribe pages, including 55705 Air Conditioning, Heating and Ventilation; 55710 Axles, Including Suspension, Springs, Shocks, Struts, etc.; and 55712 Bicycle Racks for Transit Buses.
Which states post the most state and local bids under NIGP 557?
The states with the most state and local contract opportunities under NIGP 557 posted in the last 90 days are Texas (86), California (44) and Florida (25).
What is the latest state & local contract opportunity under NIGP 557?
The latest state & local contract opportunity under NIGP 557 is Big Bus Parts - Misc from California, posted November 9, 2026.
On GovTribe
See everything under NIGP 557
- State & local contract opportunities, awards and contract vehicles under this code
- Contacts who buy under this code
- Ask GovTribe AI about this code