Federal Agencies / Federal agency guide
Department of Transportation: $9B in contracts in FY2025
Most of DOT's own contract dollars are the FAA's: air traffic control systems, engineering and integration, airport and facilities work and the IT behind them. The highway and transit money is larger still, but it flows as grants to the states, which then buy construction and engineering under DBE rules; DOT's research and safety offices buy on top.
Its mission, in its own words
Serve the United States by ensuring a fast, safe, efficient, accessible and convenient transportation system that meets our vital national interests and enhances the quality of life of the American people, today and into the future.
As recorded on USAspending.gov; 13 sub-agencies and bureaus buy under it. www.transportation.gov
- Small-business set-asides
- $1.1B
Source: USAspending.gov, FY2025 contract obligations under a small-business set-aside, read 2026-11-05.
- Set-aside share
- 11.8%
Source: USAspending.gov, FY2025 set-aside obligations over all contract obligations, read 2026-11-05.
What DOT buys, by code
The NAICS codes with the most DOT contract dollars in FY2025: together $5.8B, 64.3% of everything it obligated. Each code links to its own page with the buyers under it across government.
| NAICS code | FY2025 | Share |
|---|---|---|
| $1.4B | 15.4% | |
| $658M | 7.3% | |
| $584M | 6.5% | |
| $414M | 4.6% | |
| $375M | 4.2% | |
| $327M | 3.6% | |
| $325M | 3.6% | |
| $325M | 3.6% | |
| $285M | 3.2% | |
| $247M | 2.7% | |
| $246M | 2.7% | |
| $242M | 2.7% | |
| $233M | 2.6% | |
| $147M | 1.6% |
Source: USAspending.gov, FY2025 contract obligations by NAICS code, read 2026-11-05.
The small-business share
$1,063,850,926 of DOT’s FY2025 contract dollars, 11.8% of the total, went out under a small-business set-aside: competitions and sole-source awards reserved for small firms, 8(a) participants, HUBZone, service-disabled veteran-owned and women-owned businesses. The dollars primes placed with small subcontractors sit on top of that and are not counted here.
Source: USAspending.gov, FY2025 set-aside obligations, read 2026-11-05.
The vehicles
FAA e-FAST
The FAA's small-business vehicle for engineering, technical and IT services.
FAA NISC IV
The National Airspace Integrated Services Contract.
FAA SE2020 and successors
Systems engineering for the national airspace.
OASIS+ and research IDIQs
Professional services and the FHWA and FTA research vehicles.
What GovSmith does with this
How GovSmith wins at DOT for you
GovSmith tracks the FAA's e-FAST orders and the Department's research buys for a client with engineering, data or aviation skills, and for a construction or trades client it follows the money to the state DOTs the grants fund, through the state guides and the DBE-goal subcontracts.